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Built 2026-10-18 (18 October 2026)

Haikou Weather Records (CHM00059758)

Record envelope, standing records and threshold days for Haikou (CHM00059758), China, with 76 years of record.

Key Facts for Haikou

  • Haikou (CHM00059758) is a weather station in China at 20.00 latitude and 110.25 longitude, 24 m (79 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at Haikou still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Haikou set a daily record high minimum temperature of 27.1 C (80.8 F) on 18 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: China, 20.00 latitude, 110.25 longitude.
  • Elevation: 24 m (79 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

1 days at or beyond a record
Daily record high and record low at Haikou, with 2026 drawn through them The band shows the record high and record low for each calendar day at Haikou. The lines show the 2026 daily maximum and minimum. 1 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 01020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Haikou. The lines show the 2026 daily maximum and minimum. 1 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Haikou, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.5 C (92.3 F)2.8 C (37.0 F)25.5 C (77.9 F)11.0 C (51.8 F)
Feb37.2 C (99.0 F)6.5 C (43.7 F)29.6 C (85.3 F)17.4 C (63.3 F)
Mar38.1 C (100.6 F)6.4 C (43.5 F)31.2 C (88.2 F)16.9 C (62.4 F)
Apr41.3 C (106.3 F)9.8 C (49.6 F)36.6 C (97.9 F)20.3 C (68.5 F)
May39.2 C (102.6 F)16.3 C (61.3 F)37.1 C (98.8 F)23.1 C (73.6 F)
Jun38.4 C (101.1 F)21.2 C (70.2 F)36.5 C (97.7 F)25.1 C (77.2 F)
Jul38.4 C (101.1 F)21.0 C (69.8 F)33.4 C (92.1 F)25.6 C (78.1 F)
Aug37.0 C (98.6 F)21.7 C (71.1 F)32.8 C (91.0 F)24.7 C (76.5 F)
Sep36.0 C (96.8 F)17.5 C (63.5 F)31.9 C (89.4 F)24.1 C (75.4 F)
Oct34.5 C (94.1 F)14.1 C (57.4 F)n/an/a
Nov34.7 C (94.5 F)10.0 C (50.0 F)n/an/a
Dec31.5 C (88.7 F)5.3 C (41.5 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Haikou by the year they were set 1,464 records at Haikou still stand. 1998 holds the most, with 48. 02040601951: 231952: 251953: 221954: 281955: 141956: 111957: 111958: 231959: 211960: 121961: 41962: 151963: 201964: 211965: 171966: 421967: 241968: 271969: 261970: 231971: 171972: 231973: 211974: 221975: 231976: 211977: 381978: 111979: 211980: 91981: 201982: 151983: 191984: 221985: 321986: 101987: 241988: 231989: 111990: 131991: 171992: 131993: 171994: 181995: 51996: 191997: 201998: 481999: 282000: 122001: 282002: 212003: 142004: 132005: 402006: 352007: 162008: 202009: 162010: 432011: 172012: 142013: 22014: 102015: 32016: 12018: 12019: 12020: 12021: 42022: 292023: 252024: 402025: 392026: 301951195919671975198319911999200720152024
1,464 records at Haikou still stand. 1998 holds the most, with 48.
Standing records at Haikou by the year they were set
Year setStanding records
195123
195225
195322
195428
195514
195611
195711
195823
195921
196012
19614
196215
196320
196421
196517
196642
196724
196827
196926
197023
197117
197223
197321
197422
197523
197621
197738
197811
197921
19809
198120
198215
198319
198422
198532
198610
198724
198823
198911
199013
199117
199213
199317
199418
19955
199619
199720
199848
199928
200012
200128
200221
200314
200413
200540
200635
200716
200820
200916
201043
201117
201214
20132
201410
20153
20161
20181
20191
20201
20214
202229
202325
202440
202539
202630

All-Time Record Progression

13 new records
When Haikou set new all-time records 13 all-time records were set at Haikou between 22 August 1990 and 23 June 2026. Each dot is a new record. Record high minimum temperatureRecord daily precipitationRecord high maximum temperature22 August 1990: Record high minimum temperature 28.4 C (83.1 F)20 August 1993: Record high minimum temperature 28.5 C (83.3 F)20 September 1996: Record daily precipitation 327.9 mm (12.9 in)19 August 1997: Record high minimum temperature 28.6 C (83.5 F)22 July 1999: Record high minimum temperature 28.8 C (83.8 F)25 July 1999: Record high minimum temperature 29.3 C (84.7 F)21 April 2001: Record high maximum temperature 39.6 C (103.3 F)21 July 2005: Record high minimum temperature 29.4 C (84.9 F)5 October 2011: Record daily precipitation 331.2 mm (13.0 in)18 July 2014: Record daily precipitation 391.2 mm (15.4 in)27 April 2024: Record high maximum temperature 40.9 C (105.6 F)30 April 2024: Record high maximum temperature 41.3 C (106.3 F)23 June 2026: Record high minimum temperature 29.8 C (85.6 F)19901995200020052010201520202025
13 all-time records were set at Haikou between 22 August 1990 and 23 June 2026. Each dot is a new record.
When Haikou set new all-time records
DateKindDetail
1990-08-22Record high minimum temperatureRecord high minimum temperature 28.4 C (83.1 F)
1993-08-20Record high minimum temperatureRecord high minimum temperature 28.5 C (83.3 F)
1996-09-20Record daily precipitationRecord daily precipitation 327.9 mm (12.9 in)
1997-08-19Record high minimum temperatureRecord high minimum temperature 28.6 C (83.5 F)
1999-07-22Record high minimum temperatureRecord high minimum temperature 28.8 C (83.8 F)
1999-07-25Record high minimum temperatureRecord high minimum temperature 29.3 C (84.7 F)
2001-04-21Record high maximum temperatureRecord high maximum temperature 39.6 C (103.3 F)
2005-07-21Record high minimum temperatureRecord high minimum temperature 29.4 C (84.9 F)
2011-10-05Record daily precipitationRecord daily precipitation 331.2 mm (13.0 in)
2014-07-18Record daily precipitationRecord daily precipitation 391.2 mm (15.4 in)
2024-04-27Record high maximum temperatureRecord high maximum temperature 40.9 C (105.6 F)
2024-04-30Record high maximum temperatureRecord high maximum temperature 41.3 C (106.3 F)
2026-06-23Record high minimum temperatureRecord high minimum temperature 29.8 C (85.6 F)

Wettest Day of Each Month

Jul: 391.2 mm (15.4 in)
Record daily precipitation for each month at Haikou The wettest day on record for each calendar month at Haikou. The most was 391.2 mm (15.4 in) on 18 July 2014. 0100200300400 Jan: 35.8 mm (1.4 in), 31 January 1969 Jan Feb: 60.5 mm (2.4 in), 17 February 2022 Feb Mar: 91.6 mm (3.6 in), 25 March 2009 Mar Apr: 130.1 mm (5.1 in), 16 April 1986 Apr May: 128.9 mm (5.1 in), 1 May 1964 May Jun: 210.2 mm (8.3 in), 13 June 1952 Jun Jul: 391.2 mm (15.4 in), 18 July 2014 Jul Aug: 326.7 mm (12.9 in), 22 August 1998 Aug Sep: 327.9 mm (12.9 in), 20 September 1996 Sep Oct: 331.2 mm (13.0 in), 5 October 2011 Oct Nov: 252.7 mm (9.9 in), 8 November 1972 Nov Dec: 91.9 mm (3.6 in), 9 December 1963 Dec
The wettest day on record for each calendar month at Haikou. The most was 391.2 mm (15.4 in) on 18 July 2014.
Record daily precipitation for each month at Haikou
MonthRecord daily precipitation (mm)Date
Jan35.8 mm (1.4 in)31 January 1969
Feb60.5 mm (2.4 in)17 February 2022
Mar91.6 mm (3.6 in)25 March 2009
Apr130.1 mm (5.1 in)16 April 1986
May128.9 mm (5.1 in)1 May 1964
Jun210.2 mm (8.3 in)13 June 1952
Jul391.2 mm (15.4 in)18 July 2014
Aug326.7 mm (12.9 in)22 August 1998
Sep327.9 mm (12.9 in)20 September 1996
Oct331.2 mm (13.0 in)5 October 2011
Nov252.7 mm (9.9 in)8 November 1972
Dec91.9 mm (3.6 in)9 December 1963

Period of Record Coverage

1951 to 2026
Days with data per year at Haikou 76 years of record at Haikou, 1951 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 2013, 2015, 2016, 2017, 2018, 2019, 2020, 2021 and others. 1951: 365 of 365 days1952: 366 of 366 days1953: 364 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 175 of 365 days2014: 352 of 365 days2015: 84 of 365 days2016: 10 of 366 days2017: 4 of 365 days2018: 17 of 365 days2019: 58 of 365 days2020: 85 of 366 days2021: 114 of 365 days2022: 361 of 365 days2023: 347 of 365 days2024: 344 of 366 days2025: 346 of 365 days2026: 220 of 365 days1960197019801990200020102020
76 years of record at Haikou, 1951 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 2013, 2015, 2016, 2017, 2018, 2019, 2020, 2021 and others.
Days with data per year at Haikou
YearDays with dataShare of yearComplete
1951365100%Yes
1952366100%Yes
1953364100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
201317548%No
201435296%Yes
20158423%No
2016103%No
201741%No
2018175%No
20195816%No
20208523%No
202111431%No
202236199%Yes
202334795%Yes
202434494%Yes
202534695%Yes
202622060%No

Latest Records

20
Latest records at Haikou
DateStationRecordValueBeat old record byOld record stoodSignificance
18 September 2026Haikou, CNdaily high min (Provisional)27.1 C (80.8 F)0.4 C (0.7 F)28 years18 of 100 (Routine)
13 September 2026Haikou, CNdaily low max (Provisional)25.9 C (78.6 F)1.1 C (2.0 F)19 years17 of 100 (Routine)
10 September 2026Haikou, CNdaily high min (Provisional)27.3 C (81.1 F)0.5 C (0.9 F)35 years21 of 100 (Routine)
9 September 2026Haikou, CNdaily high min (Provisional)27.4 C (81.3 F)0.2 C (0.4 F)20 years14 of 100 (Routine)
29 August 2026Haikou, CNdaily high min (Provisional)28.3 C (82.9 F)0.6 C (1.1 F)28 years20 of 100 (Routine)
24 August 2026Haikou, CNdaily low max (Provisional)27.5 C (81.5 F)0.2 C (0.4 F)0 years8 of 100 (Routine)
14 July 2026Haikou, CNdaily low max29.5 C (85.1 F)0.9 C (1.6 F)55 years27 of 100 (Routine)
13 July 2026Haikou, CNdaily rain161.7 mm (6.4 in)100.0 mm (3.9 in)32 years52 of 100 (Notable)
12 July 2026Haikou, CNdaily rain90.6 mm (3.6 in)39.3 mm (1.5 in)4 years22 of 100 (Routine)
6 July 2026Haikou, CNdaily low max29.3 C (84.7 F)1.1 C (2.0 F)47 years26 of 100 (Routine)
4 July 2026Haikou, CNdaily high min27.7 C (81.9 F)0.3 C (0.5 F)8 years11 of 100 (Routine)
3 July 2026Haikou, CNdaily rain149.5 mm (5.9 in)77.8 mm (3.1 in)24 years42 of 100 (Notable)
1 July 2026Haikou, CNdaily high min28.2 C (82.8 F)0.2 C (0.4 F)21 years14 of 100 (Routine)
27 June 2026Haikou, CNdaily high min28.1 C (82.6 F)0.7 C (1.3 F)28 years21 of 100 (Routine)
25 June 2026Haikou, CNdaily high min28.5 C (83.3 F)0.9 C (1.6 F)33 years24 of 100 (Routine)
24 June 2026Haikou, CNdaily high min28.8 C (83.8 F)1.6 C (2.9 F)24 years27 of 100 (Routine)
23 June 2026Haikou, CNall-time high min29.8 C (85.6 F)0.4 C (0.7 F)20 years36 of 100 (Notable)
18 June 2026Haikou, CNdaily high min28.2 C (82.8 F)0.9 C (1.6 F)48 years28 of 100 (Routine)
17 June 2026Haikou, CNdaily high min28.5 C (83.3 F)0.7 C (1.3 F)48 years27 of 100 (Routine)
15 June 2026Haikou, CNdaily high min27.8 C (82.0 F)0.2 C (0.4 F)28 years16 of 100 (Routine)

Climate Trend

66 complete years, 1951 to 2025
Annual mean temperature at Haikou as warming stripes, 1951 to 2025 One stripe for each of 66 complete years at Haikou, 1951 to 2025. Blue stripes are years cooler than the station's own mean of 24.8 C (76.6 F); red stripes are warmer. The coolest year was 1971, at 23.7 C (74.7 F), and the warmest was 2024, at 26.3 C (79.3 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1951: 24.3 C, -0.5 C from the station mean1952: 25.3 C, +0.5 C from the station mean1953: 24.8 C, 0.0 C from the station mean1954: 24.7 C, -0.1 C from the station mean1955: 24.5 C, -0.2 C from the station mean1956: 24.4 C, -0.4 C from the station mean1957: 24.3 C, -0.5 C from the station mean1958: 24.5 C, -0.3 C from the station mean1959: 24.8 C, 0.0 C from the station mean1960: 24.7 C, -0.1 C from the station mean1961: 24.8 C, 0.0 C from the station mean1962: 23.9 C, -0.8 C from the station mean1963: 24.0 C, -0.8 C from the station mean1964: 24.2 C, -0.6 C from the station mean1965: 24.6 C, -0.2 C from the station mean1966: 25.2 C, +0.4 C from the station mean1967: 23.8 C, -1.0 C from the station mean1968: 23.9 C, -0.9 C from the station mean1969: 24.4 C, -0.4 C from the station mean1970: 24.4 C, -0.4 C from the station mean1971: 23.7 C, -1.1 C from the station mean1972: 24.4 C, -0.4 C from the station mean1973: 25.1 C, +0.3 C from the station mean1974: 23.8 C, -1.0 C from the station mean1975: 24.4 C, -0.4 C from the station mean1976: 24.1 C, -0.7 C from the station mean1977: 24.6 C, -0.2 C from the station mean1978: 24.5 C, -0.3 C from the station mean1979: 24.9 C, +0.1 C from the station mean1980: 25.1 C, +0.4 C from the station mean1981: 25.0 C, +0.2 C from the station mean1982: 24.7 C, -0.1 C from the station mean1983: 24.3 C, -0.5 C from the station mean1984: 23.8 C, -1.0 C from the station mean1985: 23.9 C, -0.9 C from the station mean1986: 24.3 C, -0.5 C from the station mean1987: 25.4 C, +0.6 C from the station mean1988: 24.5 C, -0.3 C from the station mean1989: 24.5 C, -0.3 C from the station mean1990: 24.9 C, +0.1 C from the station mean1991: 25.5 C, +0.7 C from the station mean1992: 24.7 C, -0.1 C from the station mean1993: 25.0 C, +0.2 C from the station mean1994: 25.4 C, +0.6 C from the station mean1995: 24.8 C, 0.0 C from the station mean1996: 24.9 C, +0.2 C from the station mean1997: 25.3 C, +0.5 C from the station mean1998: 26.1 C, +1.3 C from the station mean1999: 25.3 C, +0.5 C from the station mean2000: 25.1 C, +0.3 C from the station mean2001: 25.4 C, +0.6 C from the station mean2002: 25.7 C, +0.9 C from the station mean2003: 25.8 C, +1.0 C from the station mean2004: 25.3 C, +0.5 C from the station mean2005: 25.8 C, +1.0 C from the station mean2006: 26.0 C, +1.2 C from the station mean2007: 24.9 C, +0.1 C from the station mean2008: 24.1 C, -0.7 C from the station mean2009: 25.0 C, +0.2 C from the station mean2010: 25.4 C, +0.6 C from the station mean2011: 23.9 C, -0.9 C from the station mean2012: 25.2 C, +0.4 C from the station mean2022: 25.2 C, +0.4 C from the station mean2023: 26.0 C, +1.2 C from the station mean2024: 26.3 C, +1.5 C from the station mean2025: 24.9 C, +0.1 C from the station mean19511960197019801990200020102020
One stripe for each of 66 complete years at Haikou, 1951 to 2025. Blue stripes are years cooler than the station's own mean of 24.8 C (76.6 F); red stripes are warmer. The coolest year was 1971, at 23.7 C (74.7 F), and the warmest was 2024, at 26.3 C (79.3 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Haikou as warming stripes, 1951 to 2025
YearAnnual mean temperatureDifference from the station mean
195124.3 C-0.53 C
195225.3 C+0.49 C
195324.8 C+0.03 C
195424.7 C-0.13 C
195524.5 C-0.25 C
195624.4 C-0.37 C
195724.3 C-0.47 C
195824.5 C-0.34 C
195924.8 C+0.03 C
196024.7 C-0.06 C
196124.8 C+0.04 C
196223.9 C-0.85 C
196324.0 C-0.82 C
196424.2 C-0.59 C
196524.6 C-0.23 C
196625.2 C+0.40 C
196723.8 C-0.98 C
196823.9 C-0.88 C
196924.4 C-0.38 C
197024.4 C-0.42 C
197123.7 C-1.07 C
197224.4 C-0.44 C
197325.1 C+0.31 C
197423.8 C-0.97 C
197524.4 C-0.37 C
197624.1 C-0.69 C
197724.6 C-0.22 C
197824.5 C-0.31 C
197924.9 C+0.06 C
198025.1 C+0.35 C
198125.0 C+0.17 C
198224.7 C-0.08 C
198324.3 C-0.52 C
198423.8 C-1.03 C
198523.9 C-0.88 C
198624.3 C-0.46 C
198725.4 C+0.59 C
198824.5 C-0.31 C
198924.5 C-0.28 C
199024.9 C+0.14 C
199125.5 C+0.73 C
199224.7 C-0.10 C
199325.0 C+0.17 C
199425.4 C+0.57 C
199524.8 C-0.02 C
199624.9 C+0.15 C
199725.3 C+0.54 C
199826.1 C+1.33 C
199925.3 C+0.51 C
200025.1 C+0.30 C
200125.4 C+0.57 C
200225.7 C+0.89 C
200325.8 C+0.97 C
200425.3 C+0.53 C
200525.8 C+0.98 C
200626.0 C+1.23 C
200724.9 C+0.07 C
200824.1 C-0.71 C
200925.0 C+0.18 C
201025.4 C+0.62 C
201123.9 C-0.91 C
201225.2 C+0.44 C
202225.2 C+0.43 C
202326.0 C+1.22 C
202426.3 C+1.50 C
202524.9 C+0.10 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1951 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 66 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Haikou
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.1 to 0.2) per decade0.3 F (0.2 to 0.4) per decade1951 to 202566Rise
Mean daily maximum0.09 C (0.01 to 0.18) per decade0.17 F (0.02 to 0.32) per decade1951 to 202566Rise
Mean daily minimum0.2 C (0.2 to 0.3) per decade0.4 F (0.3 to 0.5) per decade1951 to 202566Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1951 to 2026
Yearly extremes at Haikou: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.3 C (106.3 F)202437.2 C (99.0 F)76
Coldest night (TNn)2.8 C (37.0 F)19558.4 C (47.0 F)76
Wettest day (Rx1day)391.2 mm (15.4 in)2014160.3 mm (6.3 in)75
Wettest five days (Rx5day)707.9 mm (27.9 in)2010230.2 mm (9.1 in)74
Longest dry spell (CDD)60 days197330 days75

Hottest day (TXx)

Hottest day (TXx) at Haikou by year The hottest day of the year at Haikou, 1951 to 2026. The record is 41.3 C (106.3 F) in 2024, marked on the chart; the median year is 37.2 C (99.0 F). 2025303540451960198020002020Record: 41.3 C (106.3 F) in 2024
The hottest day of the year at Haikou, 1951 to 2026. The record is 41.3 C (106.3 F) in 2024, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Haikou by year
YearHottest day (TXx)
195136.9 C (98.4 F)
195238.9 C (102.0 F)
195337.8 C (100.0 F)
195437.8 C (100.0 F)
195537.8 C (100.0 F)
195637.8 C (100.0 F)
195737.1 C (98.8 F)
195838.8 C (101.8 F)
195938.0 C (100.4 F)
196038.3 C (100.9 F)
196138.4 C (101.1 F)
196238.1 C (100.6 F)
196336.4 C (97.5 F)
196436.9 C (98.4 F)
196536.2 C (97.2 F)
196636.2 C (97.2 F)
196737.0 C (98.6 F)
196835.7 C (96.3 F)
196937.3 C (99.1 F)
197038.2 C (100.8 F)
197135.4 C (95.7 F)
197236.5 C (97.7 F)
197337.9 C (100.2 F)
197436.4 C (97.5 F)
197536.3 C (97.3 F)
197636.0 C (96.8 F)
197738.4 C (101.1 F)
197835.6 C (96.1 F)
197937.2 C (99.0 F)
198037.5 C (99.5 F)
198137.8 C (100.0 F)
198237.2 C (99.0 F)
198338.0 C (100.4 F)
198436.3 C (97.3 F)
198536.8 C (98.2 F)
198636.0 C (96.8 F)
198736.9 C (98.4 F)
198837.2 C (99.0 F)
198935.5 C (95.9 F)
199038.2 C (100.8 F)
199137.7 C (99.9 F)
199237.5 C (99.5 F)
199338.4 C (101.1 F)
199438.7 C (101.7 F)
199536.8 C (98.2 F)
199638.0 C (100.4 F)
199736.4 C (97.5 F)
199837.7 C (99.9 F)
199938.1 C (100.6 F)
200036.3 C (97.3 F)
200139.6 C (103.3 F)
200237.0 C (98.6 F)
200338.6 C (101.5 F)
200437.2 C (99.0 F)
200538.8 C (101.8 F)
200638.2 C (100.8 F)
200737.9 C (100.2 F)
200836.4 C (97.5 F)
200935.5 C (95.9 F)
201038.5 C (101.3 F)
201135.9 C (96.6 F)
201236.4 C (97.5 F)
201337.3 C (99.1 F)
201437.0 C (98.6 F)
201535.0 C (95.0 F)
201634.6 C (94.3 F)
201724.3 C (75.7 F)
201836.7 C (98.1 F)
201931.1 C (88.0 F)
202034.9 C (94.8 F)
202138.0 C (100.4 F)
202236.6 C (97.9 F)
202339.2 C (102.6 F)
202441.3 C (106.3 F)
202535.6 C (96.1 F)
202637.1 C (98.8 F)

Coldest night (TNn)

Coldest night (TNn) at Haikou by year The coldest night of the year at Haikou, 1951 to 2026. The record is 2.8 C (37.0 F) in 1955, marked on the chart; the median year is 8.4 C (47.0 F). 01020301960198020002020Record: 2.8 C (37.0 F) in 1955
The coldest night of the year at Haikou, 1951 to 2026. The record is 2.8 C (37.0 F) in 1955, marked on the chart; the median year is 8.4 C (47.0 F).
Coldest night (TNn) at Haikou by year
YearColdest night (TNn)
19517.2 C (45.0 F)
19527.4 C (45.3 F)
19538.6 C (47.5 F)
19549.6 C (49.3 F)
19552.8 C (37.0 F)
19568.8 C (47.8 F)
19577.1 C (44.8 F)
19588.1 C (46.6 F)
19598.9 C (48.0 F)
19608.0 C (46.4 F)
19615.4 C (41.7 F)
19626.2 C (43.2 F)
19633.2 C (37.8 F)
19646.7 C (44.1 F)
19658.0 C (46.4 F)
19669.8 C (49.6 F)
19673.6 C (38.5 F)
19688.0 C (46.4 F)
19696.5 C (43.7 F)
19708.5 C (47.3 F)
19717.6 C (45.7 F)
19727.6 C (45.7 F)
19737.3 C (45.1 F)
19744.9 C (40.8 F)
19755.3 C (41.5 F)
19767.7 C (45.9 F)
19777.3 C (45.1 F)
19789.3 C (48.7 F)
19799.1 C (48.4 F)
19807.9 C (46.2 F)
19818.1 C (46.6 F)
19826.1 C (43.0 F)
19837.3 C (45.1 F)
19846.7 C (44.1 F)
19859.5 C (49.1 F)
19866.4 C (43.5 F)
19879.9 C (49.8 F)
198810.4 C (50.7 F)
19897.9 C (46.2 F)
19907.7 C (45.9 F)
19917.4 C (45.3 F)
19928.6 C (47.5 F)
19937.5 C (45.5 F)
19948.7 C (47.7 F)
19959.2 C (48.6 F)
19967.5 C (45.5 F)
199711.1 C (52.0 F)
199810.8 C (51.4 F)
19997.4 C (45.3 F)
200010.5 C (50.9 F)
200110.2 C (50.4 F)
20029.1 C (48.4 F)
20037.4 C (45.3 F)
20049.0 C (48.2 F)
20059.4 C (48.9 F)
200610.4 C (50.7 F)
200710.7 C (51.3 F)
20087.7 C (45.9 F)
20099.0 C (48.2 F)
20108.4 C (47.1 F)
20117.7 C (45.9 F)
20129.2 C (48.6 F)
20138.9 C (48.0 F)
20148.3 C (46.9 F)
201511.0 C (51.8 F)
201613.5 C (56.3 F)
201724.6 C (76.3 F)
201821.3 C (70.3 F)
201912.8 C (55.0 F)
202011.5 C (52.7 F)
20217.8 C (46.0 F)
20228.7 C (47.7 F)
20239.3 C (48.7 F)
20248.8 C (47.8 F)
202511.7 C (53.1 F)
202611.0 C (51.8 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Haikou by year The wettest day of the year at Haikou, 1951 to 2026. The record is 391.2 mm (15.4 in) in 2014, marked on the chart; the median year is 160.3 mm (6.3 in). 01002003004001960198020002020Record: 391.2 mm (15.4 in) in 2014
The wettest day of the year at Haikou, 1951 to 2026. The record is 391.2 mm (15.4 in) in 2014, marked on the chart; the median year is 160.3 mm (6.3 in).
Wettest day (Rx1day) at Haikou by year
YearWettest day (Rx1day)
1951164.1 mm (6.5 in)
1952210.2 mm (8.3 in)
1953235.4 mm (9.3 in)
1954173.7 mm (6.8 in)
1955118.1 mm (4.6 in)
1956269.6 mm (10.6 in)
1957101.5 mm (4.0 in)
1958134.4 mm (5.3 in)
195959.7 mm (2.4 in)
1960184.4 mm (7.3 in)
196180.7 mm (3.2 in)
1962129.7 mm (5.1 in)
1963155.0 mm (6.1 in)
1964174.1 mm (6.9 in)
1965179.4 mm (7.1 in)
1966283.0 mm (11.1 in)
1967216.8 mm (8.5 in)
196857.6 mm (2.3 in)
1969121.3 mm (4.8 in)
1970244.0 mm (9.6 in)
1971136.4 mm (5.4 in)
1972252.7 mm (9.9 in)
1973124.9 mm (4.9 in)
1974133.1 mm (5.2 in)
1975113.1 mm (4.5 in)
1976166.6 mm (6.6 in)
197778.3 mm (3.1 in)
1978140.3 mm (5.5 in)
1979100.3 mm (3.9 in)
1980109.2 mm (4.3 in)
1981100.1 mm (3.9 in)
1982173.9 mm (6.8 in)
1983104.4 mm (4.1 in)
1984114.6 mm (4.5 in)
198592.7 mm (3.6 in)
1986130.1 mm (5.1 in)
198783.9 mm (3.3 in)
1988100.5 mm (4.0 in)
1989188.1 mm (7.4 in)
1990168.8 mm (6.6 in)
1991163.0 mm (6.4 in)
1992218.4 mm (8.6 in)
1993208.5 mm (8.2 in)
1994126.5 mm (5.0 in)
1995104.5 mm (4.1 in)
1996327.9 mm (12.9 in)
1997182.3 mm (7.2 in)
1998326.7 mm (12.9 in)
199994.0 mm (3.7 in)
2000257.7 mm (10.1 in)
2001160.3 mm (6.3 in)
2002230.7 mm (9.1 in)
2003188.2 mm (7.4 in)
2004118.4 mm (4.7 in)
200573.9 mm (2.9 in)
2006172.7 mm (6.8 in)
2007125.5 mm (4.9 in)
2008292.5 mm (11.5 in)
2009249.0 mm (9.8 in)
2010225.5 mm (8.9 in)
2011331.2 mm (13.0 in)
2012197.3 mm (7.8 in)
2013104.9 mm (4.1 in)
2014391.2 mm (15.4 in)
2015189.2 mm (7.4 in)
2016197.6 mm (7.8 in)
2017115.6 mm (4.6 in)
2018115.8 mm (4.6 in)
201913.2 mm (0.5 in)
202018.8 mm (0.7 in)
2021181.4 mm (7.1 in)
2022126.7 mm (5.0 in)
2023141.7 mm (5.6 in)
2024257.3 mm (10.1 in)
2025n/a
2026161.7 mm (6.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Haikou by year The wettest five days of the year at Haikou, 1951 to 2026. The record is 707.9 mm (27.9 in) in 2010, marked on the chart; the median year is 230.2 mm (9.1 in). 02004006008001960198020002020Record: 707.9 mm (27.9 in) in 2010
The wettest five days of the year at Haikou, 1951 to 2026. The record is 707.9 mm (27.9 in) in 2010, marked on the chart; the median year is 230.2 mm (9.1 in).
Wettest five days (Rx5day) at Haikou by year
YearWettest five days (Rx5day)
1951205.5 mm (8.1 in)
1952269.1 mm (10.6 in)
1953304.1 mm (12.0 in)
1954267.8 mm (10.5 in)
1955167.2 mm (6.6 in)
1956562.7 mm (22.2 in)
1957153.9 mm (6.1 in)
1958293.0 mm (11.5 in)
1959154.7 mm (6.1 in)
1960352.4 mm (13.9 in)
1961106.4 mm (4.2 in)
1962181.6 mm (7.1 in)
1963300.9 mm (11.8 in)
1964231.4 mm (9.1 in)
1965184.7 mm (7.3 in)
1966331.7 mm (13.1 in)
1967482.6 mm (19.0 in)
1968133.0 mm (5.2 in)
1969129.3 mm (5.1 in)
1970290.8 mm (11.4 in)
1971171.8 mm (6.8 in)
1972274.8 mm (10.8 in)
1973186.6 mm (7.3 in)
1974187.7 mm (7.4 in)
1975173.1 mm (6.8 in)
1976235.3 mm (9.3 in)
1977113.8 mm (4.5 in)
1978229.6 mm (9.0 in)
1979168.9 mm (6.6 in)
1980242.6 mm (9.6 in)
1981180.8 mm (7.1 in)
1982214.4 mm (8.4 in)
1983201.9 mm (7.9 in)
1984142.2 mm (5.6 in)
1985174.2 mm (6.9 in)
1986204.6 mm (8.1 in)
1987107.7 mm (4.2 in)
1988211.3 mm (8.3 in)
1989230.7 mm (9.1 in)
1990259.2 mm (10.2 in)
1991200.9 mm (7.9 in)
1992349.8 mm (13.8 in)
1993233.7 mm (9.2 in)
1994246.7 mm (9.7 in)
1995145.9 mm (5.7 in)
1996454.9 mm (17.9 in)
1997233.4 mm (9.2 in)
1998345.4 mm (13.6 in)
1999183.1 mm (7.2 in)
2000612.0 mm (24.1 in)
2001298.6 mm (11.8 in)
2002242.8 mm (9.6 in)
2003212.0 mm (8.3 in)
2004175.8 mm (6.9 in)
2005103.0 mm (4.1 in)
2006338.7 mm (13.3 in)
2007210.7 mm (8.3 in)
2008570.6 mm (22.5 in)
2009394.3 mm (15.5 in)
2010707.9 mm (27.9 in)
2011662.9 mm (26.1 in)
2012263.7 mm (10.4 in)
2013205.8 mm (8.1 in)
2014434.7 mm (17.1 in)
2015404.4 mm (15.9 in)
2016454.9 mm (17.9 in)
2017119.2 mm (4.7 in)
2018n/a
20197.4 mm (0.29 in)
202025.9 mm (1.0 in)
2021353.8 mm (13.9 in)
2022187.1 mm (7.4 in)
2023220.9 mm (8.7 in)
2024333.7 mm (13.1 in)
2025n/a
2026258.8 mm (10.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Haikou by year The longest dry spell of the year at Haikou, 1951 to 2026. The record is 60 days in 1973, marked on the chart; the median year is 30 days. 02040601960198020002020Record: 60 days in 1973
The longest dry spell of the year at Haikou, 1951 to 2026. The record is 60 days in 1973, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Haikou by year
YearLongest dry spell (CDD)
195118 days
195229 days
195319 days
195427 days
195540 days
195621 days
195718 days
195844 days
195935 days
196028 days
196136 days
196233 days
196339 days
196449 days
196537 days
196639 days
196728 days
196824 days
196919 days
197022 days
197130 days
197230 days
197360 days
197421 days
197522 days
197651 days
197755 days
197828 days
197949 days
198027 days
198135 days
198236 days
198347 days
198424 days
198517 days
198634 days
198738 days
198842 days
198918 days
199034 days
199142 days
199230 days
199329 days
199433 days
199531 days
199626 days
199736 days
199844 days
199941 days
200025 days
200122 days
200239 days
200334 days
200445 days
200522 days
200636 days
200732 days
200829 days
200931 days
201029 days
201132 days
201223 days
20135 days
20143 days
20156 days
20166 days
20173 days
20182 days
20194 days
20203 days
202127 days
202232 days
202336 days
202421 days
2025n/a
20269 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

65 years, 1951 to 2024

A day with at least 155.2 mm (6.1 in) of rain is expected about once in 2 years. A day with at least 384.6 mm (15.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Haikou: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years155.2 mm (6.1 in)
5 years218.2 mm (8.6 in)
10 years259.3 mm (10.2 in)
25 years310.4 mm (12.2 in)
50 years347.8 mm (13.7 in)
100 years384.6 mm (15.1 in)Longer than the 65 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 65 years of values from 1951 to 2024.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 331.2 mm (13.0 in) in 2011; 327.9 mm (12.9 in) in 1996; 326.7 mm (12.9 in) in 1998.

Climate Twins

2002 to 2025 against 1961 to 1990

Over 2002 to 2025, Haikou had a mean temperature of 25.3 C (77.5 F) and 1,846.9 mm (72.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Tantima (Mexico, 14,500 km away), Altamira (Mexico, 14,398 km away) and Requetemu (Mexico, 14,426 km away).

Climate twins of Haikou: stations whose 1961 to 1990 climate is closest to its 2002 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
TantimaMexico14,500 km (9,010 mi)25.0 C (76.9 F)1,681.3 mm (66.2 in)0.95
AltamiraMexico14,398 km (8,946 mi)24.8 C (76.6 F)1,650.6 mm (65.0 in)1.12
RequetemuMexico14,426 km (8,964 mi)24.7 C (76.4 F)2,075.4 mm (81.7 in)1.26

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Haikou standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Haikou threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-16).