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Chiang Rai Weather Records (TH000048303)

Record envelope, standing records and threshold days for Chiang Rai (TH000048303), Thailand, with 75 years of record.

Key Facts for Chiang Rai

  • Chiang Rai (TH000048303) is a weather station in Thailand at 19.88 latitude and 99.83 longitude, 416 m (1,365 ft) above sea level.
  • The station reports from 1951 to 2025, 75 years of record.
  • 1,464 records set at Chiang Rai still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Chiang Rai set a daily record high maximum temperature of 35.0 C (95.0 F) on 5 August 2025.

About the Station

  • Location: Thailand, 19.88 latitude, 99.83 longitude.
  • Elevation: 416 m (1,365 ft).
  • Period of record: 1951 to 2025, 75 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

2 days at or beyond a record
Daily record high and record low at Chiang Rai, with 2026 drawn through them The band shows the record high and record low for each calendar day at Chiang Rai. The lines show the 2026 daily maximum and minimum. 2 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 Chiang Rai. The lines show the 2026 daily maximum and minimum. 2 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Chiang Rai, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan34.3 C (93.7 F)1.5 C (34.7 F)31.7 C (89.1 F)9.3 C (48.7 F)
Feb37.0 C (98.6 F)6.5 C (43.7 F)33.4 C (92.1 F)13.3 C (55.9 F)
Mar39.3 C (102.7 F)6.0 C (42.8 F)36.8 C (98.2 F)14.8 C (58.6 F)
Apr41.3 C (106.3 F)11.4 C (52.5 F)38.6 C (101.5 F)19.0 C (66.2 F)
May41.8 C (107.2 F)17.1 C (62.8 F)38.3 C (100.9 F)22.2 C (72.0 F)
Jun39.6 C (103.3 F)18.5 C (65.3 F)35.7 C (96.3 F)22.0 C (71.6 F)
Jul38.6 C (101.5 F)19.0 C (66.2 F)34.9 C (94.8 F)21.8 C (71.2 F)
Aug35.9 C (96.6 F)18.5 C (65.3 F)35.0 C (95.0 F)21.3 C (70.3 F)
Sep37.0 C (98.6 F)16.4 C (61.5 F)n/an/a
Oct35.0 C (95.0 F)11.0 C (51.8 F)n/an/a
Nov34.9 C (94.8 F)5.0 C (41.0 F)n/an/a
Dec33.5 C (92.3 F)1.5 C (34.7 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Chiang Rai by the year they were set 1,464 records at Chiang Rai still stand. 1971 holds the most, with 63. 0204060801951: 191952: 141953: 191954: 141955: 411956: 191957: 221958: 171959: 201960: 261961: 171962: 271963: 381964: 171965: 241966: 171967: 111968: 91969: 131970: 191971: 631972: 201973: 81974: 221975: 181976: 91977: 141978: 101979: 151980: 191981: 31982: 101983: 171984: 161985: 161986: 151987: 51988: 171989: 151990: 101991: 141992: 261993: 121994: 111995: 31996: 91997: 101998: 501999: 202000: 152001: 272002: 122003: 162004: 62005: 112006: 122007: 132008: 112009: 192010: 152011: 142012: 182013: 182014: 102015: 372016: 382017: 332018: 162019: 522020: 412021: 132022: 422023: 472024: 422025: 61951195919671975198319911999200720152023
1,464 records at Chiang Rai still stand. 1971 holds the most, with 63.
Standing records at Chiang Rai by the year they were set
Year setStanding records
195119
195214
195319
195414
195541
195619
195722
195817
195920
196026
196117
196227
196338
196417
196524
196617
196711
19689
196913
197019
197163
197220
19738
197422
197518
19769
197714
197810
197915
198019
19813
198210
198317
198416
198516
198615
19875
198817
198915
199010
199114
199226
199312
199411
19953
19969
199710
199850
199920
200015
200127
200212
200316
20046
200511
200612
200713
200811
200919
201015
201114
201218
201318
201410
201537
201638
201733
201816
201952
202041
202113
202242
202347
202442
20256

All-Time Record Progression

6 new records
When Chiang Rai set new all-time records 6 all-time records were set at Chiang Rai between 9 July 1982 and 12 August 2022. Each dot is a new record. Record daily precipitationRecord high minimum temperatureRecord high maximum temperature9 July 1982: Record daily precipitation 157.8 mm (6.2 in)30 June 1992: Record high minimum temperature 26.9 C (80.4 F)9 August 2013: Record daily precipitation 162.3 mm (6.4 in)10 May 2019: Record high minimum temperature 27.0 C (80.6 F)19 May 2019: Record high maximum temperature 41.8 C (107.2 F)12 August 2022: Record daily precipitation 201.4 mm (7.9 in)1990200020102020
6 all-time records were set at Chiang Rai between 9 July 1982 and 12 August 2022. Each dot is a new record.
When Chiang Rai set new all-time records
DateKindDetail
1982-07-09Record daily precipitationRecord daily precipitation 157.8 mm (6.2 in)
1992-06-30Record high minimum temperatureRecord high minimum temperature 26.9 C (80.4 F)
2013-08-09Record daily precipitationRecord daily precipitation 162.3 mm (6.4 in)
2019-05-10Record high minimum temperatureRecord high minimum temperature 27.0 C (80.6 F)
2019-05-19Record high maximum temperatureRecord high maximum temperature 41.8 C (107.2 F)
2022-08-12Record daily precipitationRecord daily precipitation 201.4 mm (7.9 in)

Wettest Day of Each Month

Aug: 201.4 mm (7.9 in)
Record daily precipitation for each month at Chiang Rai The wettest day on record for each calendar month at Chiang Rai. The most was 201.4 mm (7.9 in) on 12 August 2022. 0100200300 Jan: 90.9 mm (3.6 in), 5 January 1989 Jan Feb: 53.1 mm (2.1 in), 20 February 1996 Feb Mar: 108.2 mm (4.3 in), 23 March 1970 Mar Apr: 93.2 mm (3.7 in), 3 April 1976 Apr May: 132.1 mm (5.2 in), 30 May 2012 May Jun: 134.9 mm (5.3 in), 13 June 1986 Jun Jul: 157.8 mm (6.2 in), 9 July 1982 Jul Aug: 201.4 mm (7.9 in), 12 August 2022 Aug Sep: 117.2 mm (4.6 in), 5 September 1960 Sep Oct: 113.0 mm (4.4 in), 8 October 1977 Oct Nov: 123.2 mm (4.9 in), 11 November 1983 Nov Dec: 70.1 mm (2.8 in), 24 December 1992 Dec
The wettest day on record for each calendar month at Chiang Rai. The most was 201.4 mm (7.9 in) on 12 August 2022.
Record daily precipitation for each month at Chiang Rai
MonthRecord daily precipitation (mm)Date
Jan90.9 mm (3.6 in)5 January 1989
Feb53.1 mm (2.1 in)20 February 1996
Mar108.2 mm (4.3 in)23 March 1970
Apr93.2 mm (3.7 in)3 April 1976
May132.1 mm (5.2 in)30 May 2012
Jun134.9 mm (5.3 in)13 June 1986
Jul157.8 mm (6.2 in)9 July 1982
Aug201.4 mm (7.9 in)12 August 2022
Sep117.2 mm (4.6 in)5 September 1960
Oct113.0 mm (4.4 in)8 October 1977
Nov123.2 mm (4.9 in)11 November 1983
Dec70.1 mm (2.8 in)24 December 1992

Period of Record Coverage

1951 to 2025
Days with data per year at Chiang Rai 75 years of record at Chiang Rai, 1951 to 2025. 8 years have data for under 90 percent of days and are left out of rankings: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025. 1951: 362 of 365 days1952: 364 of 366 days1953: 364 of 365 days1954: 365 of 365 days1955: 364 of 365 days1956: 365 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 363 of 365 days1960: 364 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 364 of 365 days1964: 366 of 366 days1965: 364 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 364 of 365 days1972: 365 of 366 days1973: 364 of 365 days1974: 365 of 365 days1975: 364 of 365 days1976: 366 of 366 days1977: 364 of 365 days1978: 363 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 364 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 362 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 364 of 365 days1991: 365 of 365 days1992: 363 of 366 days1993: 365 of 365 days1994: 362 of 365 days1995: 365 of 365 days1996: 363 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 362 of 366 days2001: 364 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 350 of 366 days2005: 356 of 365 days2006: 362 of 365 days2007: 362 of 365 days2008: 364 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 361 of 365 days2012: 365 of 366 days2013: 363 of 365 days2014: 364 of 365 days2015: 361 of 365 days2016: 350 of 366 days2017: 333 of 365 days2018: 153 of 365 days2019: 195 of 365 days2020: 266 of 366 days2021: 242 of 365 days2022: 288 of 365 days2023: 217 of 365 days2024: 287 of 366 days2025: 213 of 365 days1960197019801990200020102020
75 years of record at Chiang Rai, 1951 to 2025. 8 years have data for under 90 percent of days and are left out of rankings: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025.
Days with data per year at Chiang Rai
YearDays with dataShare of yearComplete
195136299%Yes
195236499%Yes
1953364100%Yes
1954365100%Yes
1955364100%Yes
1956365100%Yes
1957365100%Yes
1958365100%Yes
195936399%Yes
196036499%Yes
1961365100%Yes
1962364100%Yes
1963364100%Yes
1964366100%Yes
1965364100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971364100%Yes
1972365100%Yes
1973364100%Yes
1974365100%Yes
1975364100%Yes
1976366100%Yes
1977364100%Yes
197836399%Yes
1979365100%Yes
1980366100%Yes
1981364100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198636299%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990364100%Yes
1991365100%Yes
199236399%Yes
1993365100%Yes
199436299%Yes
1995365100%Yes
199636399%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
200036299%Yes
2001364100%Yes
2002365100%Yes
2003365100%Yes
200435096%Yes
200535698%Yes
200636299%Yes
200736299%Yes
200836499%Yes
2009365100%Yes
2010365100%Yes
201136199%Yes
2012365100%Yes
201336399%Yes
2014364100%Yes
201536199%Yes
201635096%Yes
201733391%Yes
201815342%No
201919553%No
202026673%No
202124266%No
202228879%No
202321759%No
202428778%No
202521358%No

Latest Records

20
Latest records at Chiang Rai
DateStationRecordValueBeat old record byOld record stoodSignificance
5 August 2025Chiang Rai, THdaily high max35.0 C (95.0 F)0.3 C (0.5 F)72 years29 of 100 (Routine)
31 July 2025Chiang Rai, THdaily high max34.9 C (94.8 F)1.3 C (2.3 F)60 years30 of 100 (Routine)
20 July 2025Chiang Rai, THdaily rain50.3 mm (2.0 in)0.3 mm (0.01 in)16 years12 of 100 (Routine)
5 July 2025Chiang Rai, THdaily rain86.1 mm (3.4 in)6.1 mm (0.24 in)30 years19 of 100 (Routine)
14 June 2025Chiang Rai, THdaily high min (Tie)25.3 C (77.5 F)tie6 years2 of 100 (Routine)
10 June 2025Chiang Rai, THdaily rain64.5 mm (2.5 in)26.4 mm (1.0 in)54 years39 of 100 (Notable)
8 June 2025Chiang Rai, THdaily high min25.2 C (77.4 F)0.1 C (0.2 F)2 years8 of 100 (Routine)
5 April 2025Chiang Rai, THdaily high min23.6 C (74.5 F)0.1 C (0.2 F)26 years14 of 100 (Routine)
3 April 2025Chiang Rai, THdaily high min (Tie)23.5 C (74.3 F)tie59 years6 of 100 (Routine)
2 April 2025Chiang Rai, THdaily high min23.5 C (74.3 F)0.5 C (0.9 F)43 years21 of 100 (Routine)
31 March 2025Chiang Rai, THdaily high min23.2 C (73.8 F)0.3 C (0.5 F)3 years8 of 100 (Routine)
18 March 2025Chiang Rai, THdaily rain29.7 mm (1.2 in)5.8 mm (0.23 in)35 years21 of 100 (Routine)
25 February 2025Chiang Rai, THdaily rain18.8 mm (0.7 in)7.5 mm (0.30 in)57 years20 of 100 (Routine)
24 February 2025Chiang Rai, THdaily rain17.8 mm (0.7 in)2.8 mm (0.11 in)29 years17 of 100 (Routine)
6 December 2024Chiang Rai, THdaily high max32.2 C (90.0 F)0.8 C (1.4 F)49 years24 of 100 (Routine)
1 November 2024Chiang Rai, THdaily high max33.7 C (92.7 F)0.4 C (0.7 F)10 years11 of 100 (Routine)
27 October 2024Chiang Rai, THdaily high max34.2 C (93.6 F)1.0 C (1.8 F)5 years12 of 100 (Routine)
26 October 2024Chiang Rai, THdaily high max33.7 C (92.7 F)0.1 C (0.2 F)26 years14 of 100 (Routine)
24 October 2024Chiang Rai, THdaily high max34.7 C (94.5 F)0.9 C (1.6 F)5 years12 of 100 (Routine)
19 October 2024Chiang Rai, THdaily high max33.7 C (92.7 F)0.2 C (0.4 F)55 years23 of 100 (Routine)

Climate Trend

63 complete years, 1951 to 2017
Annual mean temperature at Chiang Rai as warming stripes, 1951 to 2017 One stripe for each of 63 complete years at Chiang Rai, 1951 to 2017. Blue stripes are years cooler than the station's own mean of 25.0 C (76.9 F); red stripes are warmer. The coolest year was 1971, at 23.4 C (74.0 F), and the warmest was 2010, at 26.1 C (79.1 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1951: 24.7 C, -0.3 C from the station mean1952: 25.1 C, +0.1 C from the station mean1953: 25.3 C, +0.3 C from the station mean1954: 25.1 C, +0.1 C from the station mean1955: 24.0 C, -1.0 C from the station mean1956: 24.3 C, -0.7 C from the station mean1957: 25.1 C, +0.1 C from the station mean1958: 24.7 C, -0.3 C from the station mean1959: 24.9 C, -0.1 C from the station mean1960: 25.1 C, +0.1 C from the station mean1961: 24.7 C, -0.3 C from the station mean1962: 24.4 C, -0.5 C from the station mean1963: 24.3 C, -0.7 C from the station mean1964: 24.4 C, -0.6 C from the station mean1965: 24.5 C, -0.5 C from the station mean1966: 25.3 C, +0.3 C from the station mean1967: 24.6 C, -0.4 C from the station mean1968: 24.8 C, -0.1 C from the station mean1969: 24.6 C, -0.4 C from the station mean1970: 24.3 C, -0.7 C from the station mean1971: 23.4 C, -1.6 C from the station mean1972: 24.6 C, -0.4 C from the station mean1973: 24.4 C, -0.6 C from the station mean1974: 24.2 C, -0.8 C from the station mean1975: 24.7 C, -0.3 C from the station mean1976: 24.5 C, -0.5 C from the station mean1977: 24.5 C, -0.5 C from the station mean1978: 24.5 C, -0.5 C from the station mean1979: 24.9 C, -0.1 C from the station mean1980: 25.1 C, +0.2 C from the station mean1981: 24.9 C, -0.1 C from the station mean1982: 24.7 C, -0.3 C from the station mean1983: 24.8 C, -0.1 C from the station mean1984: 25.0 C, 0.0 C from the station mean1985: 24.8 C, -0.2 C from the station mean1986: 24.7 C, -0.2 C from the station mean1987: 25.0 C, +0.1 C from the station mean1988: 24.9 C, 0.0 C from the station mean1989: 25.0 C, 0.0 C from the station mean1990: 25.0 C, 0.0 C from the station mean1991: 25.2 C, +0.2 C from the station mean1992: 24.8 C, -0.2 C from the station mean1993: 24.7 C, -0.3 C from the station mean1994: 25.3 C, +0.3 C from the station mean1995: 25.3 C, +0.4 C from the station mean1996: 25.2 C, +0.2 C from the station mean1997: 25.3 C, +0.3 C from the station mean1998: 25.9 C, +0.9 C from the station mean1999: 25.2 C, +0.2 C from the station mean2000: 25.1 C, +0.1 C from the station mean2001: 25.6 C, +0.6 C from the station mean2002: 25.4 C, +0.4 C from the station mean2003: 25.6 C, +0.6 C from the station mean2006: 25.4 C, +0.4 C from the station mean2008: 25.2 C, +0.2 C from the station mean2009: 25.7 C, +0.7 C from the station mean2010: 26.1 C, +1.2 C from the station mean2011: 25.3 C, +0.3 C from the station mean2012: 26.0 C, +1.0 C from the station mean2013: 25.7 C, +0.7 C from the station mean2014: 25.9 C, +0.9 C from the station mean2015: 26.1 C, +1.1 C from the station mean2017: 26.1 C, +1.1 C from the station mean1951196019701980199020002010
One stripe for each of 63 complete years at Chiang Rai, 1951 to 2017. Blue stripes are years cooler than the station's own mean of 25.0 C (76.9 F); red stripes are warmer. The coolest year was 1971, at 23.4 C (74.0 F), and the warmest was 2010, at 26.1 C (79.1 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Chiang Rai as warming stripes, 1951 to 2017
YearAnnual mean temperatureDifference from the station mean
195124.7 C-0.25 C
195225.1 C+0.08 C
195325.3 C+0.29 C
195425.1 C+0.10 C
195524.0 C-1.01 C
195624.3 C-0.66 C
195725.1 C+0.08 C
195824.7 C-0.26 C
195924.9 C-0.05 C
196025.1 C+0.11 C
196124.7 C-0.29 C
196224.4 C-0.54 C
196324.3 C-0.68 C
196424.4 C-0.57 C
196524.5 C-0.50 C
196625.3 C+0.28 C
196724.6 C-0.39 C
196824.8 C-0.14 C
196924.6 C-0.42 C
197024.3 C-0.69 C
197123.4 C-1.61 C
197224.6 C-0.35 C
197324.4 C-0.59 C
197424.2 C-0.80 C
197524.7 C-0.31 C
197624.5 C-0.45 C
197724.5 C-0.46 C
197824.5 C-0.51 C
197924.9 C-0.09 C
198025.1 C+0.17 C
198124.9 C-0.11 C
198224.7 C-0.31 C
198324.8 C-0.14 C
198425.0 C-0.02 C
198524.8 C-0.20 C
198624.7 C-0.24 C
198725.0 C+0.06 C
198824.9 C-0.04 C
198925.0 C-0.02 C
199025.0 C+0.04 C
199125.2 C+0.21 C
199224.8 C-0.17 C
199324.7 C-0.32 C
199425.3 C+0.31 C
199525.3 C+0.37 C
199625.2 C+0.21 C
199725.3 C+0.30 C
199825.9 C+0.93 C
199925.2 C+0.20 C
200025.1 C+0.15 C
200125.6 C+0.62 C
200225.4 C+0.43 C
200325.6 C+0.63 C
200625.4 C+0.42 C
200825.2 C+0.18 C
200925.7 C+0.72 C
201026.1 C+1.17 C
201125.3 C+0.28 C
201226.0 C+1.05 C
201325.7 C+0.74 C
201425.9 C+0.89 C
201526.1 C+1.11 C
201726.1 C+1.13 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1951 to 2017. In Fahrenheit: 0.4 F (0.3 to 0.5) per decade. The slope is a straight line fitted to 63 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Chiang Rai
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.1 to 0.3) per decade0.4 F (0.3 to 0.5) per decade1951 to 201763Rise
Mean daily maximum0.11 C (0.05 to 0.17) per decade0.2 F (0.1 to 0.3) per decade1951 to 201763Rise
Mean daily minimum0.3 C (0.2 to 0.4) per decade0.5 F (0.4 to 0.6) per decade1951 to 201763Rise

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 2025
Yearly extremes at Chiang Rai: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.8 C (107.2 F)201938.5 C (101.3 F)75
Coldest night (TNn)1.5 C (34.7 F)19747.5 C (45.5 F)75
Wettest day (Rx1day)201.4 mm (7.9 in)202291.9 mm (3.6 in)75
Wettest five days (Rx5day)283.0 mm (11.1 in)2012183.9 mm (7.2 in)75
Longest dry spell (CDD)85 days196641 days75

Hottest day (TXx)

Hottest day (TXx) at Chiang Rai by year The hottest day of the year at Chiang Rai, 1951 to 2025. The record is 41.8 C (107.2 F) in 2019, marked on the chart; the median year is 38.5 C (101.3 F). 34363840421960198020002020Record: 41.8 C (107.2 F) in 2019
The hottest day of the year at Chiang Rai, 1951 to 2025. The record is 41.8 C (107.2 F) in 2019, marked on the chart; the median year is 38.5 C (101.3 F).
Hottest day (TXx) at Chiang Rai by year
YearHottest day (TXx)
195138.8 C (101.8 F)
195237.4 C (99.3 F)
195339.8 C (103.6 F)
195438.6 C (101.5 F)
195537.5 C (99.5 F)
195638.4 C (101.1 F)
195739.5 C (103.1 F)
195840.0 C (104.0 F)
195939.1 C (102.4 F)
196041.3 C (106.3 F)
196138.6 C (101.5 F)
196238.0 C (100.4 F)
196340.1 C (104.2 F)
196438.0 C (100.4 F)
196541.2 C (106.2 F)
196641.2 C (106.2 F)
196737.5 C (99.5 F)
196837.2 C (99.0 F)
196939.6 C (103.3 F)
197037.2 C (99.0 F)
197137.0 C (98.6 F)
197236.5 C (97.7 F)
197338.5 C (101.3 F)
197436.5 C (97.7 F)
197540.0 C (104.0 F)
197638.4 C (101.1 F)
197738.0 C (100.4 F)
197836.9 C (98.4 F)
197939.0 C (102.2 F)
198040.8 C (105.4 F)
198138.6 C (101.5 F)
198237.3 C (99.1 F)
198340.4 C (104.7 F)
198439.9 C (103.8 F)
198539.0 C (102.2 F)
198638.2 C (100.8 F)
198738.7 C (101.7 F)
198839.4 C (102.9 F)
198940.5 C (104.9 F)
199040.0 C (104.0 F)
199140.0 C (104.0 F)
199239.6 C (103.3 F)
199337.9 C (100.2 F)
199438.2 C (100.8 F)
199538.4 C (101.1 F)
199638.6 C (101.5 F)
199737.9 C (100.2 F)
199838.5 C (101.3 F)
199937.8 C (100.0 F)
200036.4 C (97.5 F)
200138.8 C (101.8 F)
200237.6 C (99.7 F)
200338.8 C (101.8 F)
200438.5 C (101.3 F)
200537.6 C (99.7 F)
200637.9 C (100.2 F)
200739.2 C (102.6 F)
200836.6 C (97.9 F)
200937.5 C (99.5 F)
201039.4 C (102.9 F)
201135.4 C (95.7 F)
201238.7 C (101.7 F)
201338.0 C (100.4 F)
201437.5 C (99.5 F)
201537.5 C (99.5 F)
201641.2 C (106.2 F)
201738.1 C (100.6 F)
201837.4 C (99.3 F)
201941.8 C (107.2 F)
202039.7 C (103.5 F)
202138.2 C (100.8 F)
202237.0 C (98.6 F)
202339.9 C (103.8 F)
202439.5 C (103.1 F)
202538.6 C (101.5 F)

Coldest night (TNn)

Coldest night (TNn) at Chiang Rai by year The coldest night of the year at Chiang Rai, 1951 to 2025. The record is 1.5 C (34.7 F) in 1974, marked on the chart; the median year is 7.5 C (45.5 F). 0510151960198020002020Record: 1.5 C (34.7 F) in 1974
The coldest night of the year at Chiang Rai, 1951 to 2025. The record is 1.5 C (34.7 F) in 1974, marked on the chart; the median year is 7.5 C (45.5 F).
Coldest night (TNn) at Chiang Rai by year
YearColdest night (TNn)
19519.8 C (49.6 F)
19527.5 C (45.5 F)
19537.8 C (46.0 F)
19545.4 C (41.7 F)
19552.0 C (35.6 F)
19564.2 C (39.6 F)
19577.0 C (44.6 F)
19585.9 C (42.6 F)
19597.9 C (46.2 F)
19606.0 C (42.8 F)
19616.0 C (42.8 F)
19625.0 C (41.0 F)
19634.6 C (40.3 F)
19644.8 C (40.6 F)
19656.4 C (43.5 F)
19668.5 C (47.3 F)
19676.4 C (43.5 F)
19688.0 C (46.4 F)
19697.2 C (45.0 F)
19708.9 C (48.0 F)
19714.0 C (39.2 F)
19727.4 C (45.3 F)
19733.0 C (37.4 F)
19741.5 C (34.7 F)
19752.8 C (37.0 F)
19763.2 C (37.8 F)
19779.0 C (48.2 F)
19786.2 C (43.2 F)
19797.3 C (45.1 F)
19807.5 C (45.5 F)
19818.1 C (46.6 F)
19824.5 C (40.1 F)
19834.8 C (40.6 F)
19847.0 C (44.6 F)
19854.8 C (40.6 F)
19866.0 C (42.8 F)
19875.9 C (42.6 F)
19888.3 C (46.9 F)
19896.0 C (42.8 F)
19906.8 C (44.2 F)
19918.0 C (46.4 F)
19926.5 C (43.7 F)
19934.2 C (39.6 F)
19948.9 C (48.0 F)
19957.0 C (44.6 F)
19966.2 C (43.2 F)
19978.0 C (46.4 F)
19988.0 C (46.4 F)
19991.5 C (34.7 F)
20008.7 C (47.7 F)
20018.0 C (46.4 F)
20029.4 C (48.9 F)
200310.5 C (50.9 F)
20049.1 C (48.4 F)
20058.8 C (47.8 F)
20068.2 C (46.8 F)
20079.8 C (49.6 F)
20087.7 C (45.9 F)
20098.7 C (47.7 F)
201010.8 C (51.4 F)
201110.6 C (51.1 F)
201210.2 C (50.4 F)
20137.8 C (46.0 F)
20147.0 C (44.6 F)
201510.2 C (50.4 F)
20168.1 C (46.6 F)
20177.2 C (45.0 F)
201811.3 C (52.3 F)
20196.3 C (43.3 F)
20209.0 C (48.2 F)
202110.2 C (50.4 F)
202210.0 C (50.0 F)
202310.3 C (50.5 F)
202412.8 C (55.0 F)
20259.3 C (48.7 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Chiang Rai by year The wettest day of the year at Chiang Rai, 1951 to 2025. The record is 201.4 mm (7.9 in) in 2022, marked on the chart; the median year is 91.9 mm (3.6 in). 0501001502002501960198020002020Record: 201.4 mm (7.9 in) in 2022
The wettest day of the year at Chiang Rai, 1951 to 2025. The record is 201.4 mm (7.9 in) in 2022, marked on the chart; the median year is 91.9 mm (3.6 in).
Wettest day (Rx1day) at Chiang Rai by year
YearWettest day (Rx1day)
1951125.4 mm (4.9 in)
195259.1 mm (2.3 in)
1953134.4 mm (5.3 in)
195490.4 mm (3.6 in)
195584.9 mm (3.3 in)
1956104.5 mm (4.1 in)
195779.3 mm (3.1 in)
195875.8 mm (3.0 in)
1959110.1 mm (4.3 in)
1960117.2 mm (4.6 in)
196167.0 mm (2.6 in)
196285.5 mm (3.4 in)
1963117.7 mm (4.6 in)
196460.0 mm (2.4 in)
1965106.9 mm (4.2 in)
196684.2 mm (3.3 in)
196796.0 mm (3.8 in)
196886.0 mm (3.4 in)
1969116.3 mm (4.6 in)
1970108.2 mm (4.3 in)
197197.0 mm (3.8 in)
197283.0 mm (3.3 in)
197382.5 mm (3.2 in)
197495.9 mm (3.8 in)
1975129.3 mm (5.1 in)
197693.2 mm (3.7 in)
1977113.0 mm (4.4 in)
1978103.4 mm (4.1 in)
197968.6 mm (2.7 in)
198086.3 mm (3.4 in)
198168.8 mm (2.7 in)
1982157.8 mm (6.2 in)
1983123.2 mm (4.9 in)
1984116.9 mm (4.6 in)
198578.4 mm (3.1 in)
1986134.9 mm (5.3 in)
1987156.0 mm (6.1 in)
198873.9 mm (2.9 in)
198990.9 mm (3.6 in)
1990102.1 mm (4.0 in)
199186.1 mm (3.4 in)
1992119.1 mm (4.7 in)
199387.1 mm (3.4 in)
1994103.1 mm (4.1 in)
1995130.0 mm (5.1 in)
199653.1 mm (2.1 in)
199766.0 mm (2.6 in)
199875.9 mm (3.0 in)
199941.9 mm (1.6 in)
200047.5 mm (1.9 in)
200173.9 mm (2.9 in)
2002105.4 mm (4.1 in)
200385.1 mm (3.4 in)
200481.3 mm (3.2 in)
200567.6 mm (2.7 in)
200691.9 mm (3.6 in)
200791.9 mm (3.6 in)
200873.2 mm (2.9 in)
200996.0 mm (3.8 in)
201099.8 mm (3.9 in)
2011110.0 mm (4.3 in)
2012132.1 mm (5.2 in)
2013162.3 mm (6.4 in)
2014111.3 mm (4.4 in)
201592.2 mm (3.6 in)
201690.2 mm (3.6 in)
2017103.9 mm (4.1 in)
201892.7 mm (3.6 in)
2019106.4 mm (4.2 in)
202067.3 mm (2.6 in)
202186.6 mm (3.4 in)
2022201.4 mm (7.9 in)
202389.2 mm (3.5 in)
202487.9 mm (3.5 in)
202586.1 mm (3.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Chiang Rai by year The wettest five days of the year at Chiang Rai, 1951 to 2025. The record is 283.0 mm (11.1 in) in 2012, marked on the chart; the median year is 183.9 mm (7.2 in). 01002003001960198020002020Record: 283.0 mm (11.1 in) in 2012
The wettest five days of the year at Chiang Rai, 1951 to 2025. The record is 283.0 mm (11.1 in) in 2012, marked on the chart; the median year is 183.9 mm (7.2 in).
Wettest five days (Rx5day) at Chiang Rai by year
YearWettest five days (Rx5day)
1951239.6 mm (9.4 in)
1952125.1 mm (4.9 in)
1953268.6 mm (10.6 in)
1954195.3 mm (7.7 in)
1955234.9 mm (9.2 in)
1956167.7 mm (6.6 in)
1957234.2 mm (9.2 in)
1958171.6 mm (6.8 in)
1959249.8 mm (9.8 in)
1960161.4 mm (6.4 in)
1961116.8 mm (4.6 in)
1962199.8 mm (7.9 in)
1963194.7 mm (7.7 in)
1964138.9 mm (5.5 in)
1965231.7 mm (9.1 in)
1966259.3 mm (10.2 in)
1967229.9 mm (9.1 in)
1968191.6 mm (7.5 in)
1969227.7 mm (9.0 in)
1970171.3 mm (6.7 in)
1971183.9 mm (7.2 in)
1972140.6 mm (5.5 in)
1973174.5 mm (6.9 in)
1974136.4 mm (5.4 in)
1975221.8 mm (8.7 in)
1976213.1 mm (8.4 in)
1977229.9 mm (9.1 in)
1978218.3 mm (8.6 in)
1979171.1 mm (6.7 in)
1980197.6 mm (7.8 in)
1981165.7 mm (6.5 in)
1982196.9 mm (7.8 in)
1983192.6 mm (7.6 in)
1984227.2 mm (8.9 in)
1985218.6 mm (8.6 in)
1986179.1 mm (7.1 in)
1987208.3 mm (8.2 in)
1988185.3 mm (7.3 in)
1989182.1 mm (7.2 in)
1990184.2 mm (7.3 in)
1991161.3 mm (6.4 in)
1992166.1 mm (6.5 in)
1993176.8 mm (7.0 in)
1994158.8 mm (6.3 in)
1995281.2 mm (11.1 in)
1996100.1 mm (3.9 in)
1997149.9 mm (5.9 in)
1998164.4 mm (6.5 in)
199942.4 mm (1.7 in)
200079.3 mm (3.1 in)
2001153.6 mm (6.0 in)
2002130.8 mm (5.1 in)
2003218.9 mm (8.6 in)
2004190.3 mm (7.5 in)
2005177.4 mm (7.0 in)
2006208.0 mm (8.2 in)
2007158.2 mm (6.2 in)
2008121.0 mm (4.8 in)
2009183.8 mm (7.2 in)
2010159.5 mm (6.3 in)
2011215.9 mm (8.5 in)
2012283.0 mm (11.1 in)
2013218.0 mm (8.6 in)
2014251.5 mm (9.9 in)
2015156.0 mm (6.1 in)
2016209.4 mm (8.2 in)
2017219.3 mm (8.6 in)
2018204.9 mm (8.1 in)
2019125.6 mm (4.9 in)
2020152.4 mm (6.0 in)
2021176.8 mm (7.0 in)
2022259.8 mm (10.2 in)
2023141.8 mm (5.6 in)
2024172.4 mm (6.8 in)
2025180.3 mm (7.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Chiang Rai by year The longest dry spell of the year at Chiang Rai, 1951 to 2025. The record is 85 days in 1966, marked on the chart; the median year is 41 days. 02550751001960198020002020Record: 85 days in 1966
The longest dry spell of the year at Chiang Rai, 1951 to 2025. The record is 85 days in 1966, marked on the chart; the median year is 41 days.
Longest dry spell (CDD) at Chiang Rai by year
YearLongest dry spell (CDD)
195147 days
195261 days
195354 days
195437 days
195550 days
195652 days
195758 days
195835 days
195927 days
196056 days
196141 days
196256 days
196342 days
196438 days
196539 days
196685 days
196752 days
196838 days
196943 days
197037 days
197163 days
197262 days
197362 days
197460 days
197541 days
197642 days
197775 days
197843 days
197984 days
198074 days
198139 days
198270 days
198343 days
198445 days
198560 days
198627 days
198738 days
198852 days
198948 days
199051 days
199168 days
199248 days
199370 days
199426 days
199567 days
199627 days
199741 days
199840 days
199914 days
20005 days
20016 days
200215 days
200362 days
200447 days
200557 days
20063 days
20073 days
20083 days
20094 days
20102 days
20113 days
20123 days
20133 days
20144 days
20154 days
20163 days
20175 days
20185 days
20195 days
20204 days
20214 days
20225 days
20235 days
20244 days
20253 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

49 years, 1951 to 2004

A day with at least 93.5 mm (3.7 in) of rain is expected about once in 2 years. A day with at least 164.5 mm (6.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Chiang Rai: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years93.5 mm (3.7 in)
5 years115.3 mm (4.5 in)
10 years128.5 mm (5.1 in)
25 years144.0 mm (5.7 in)
50 years154.6 mm (6.1 in)Longer than the 49 years of record
100 years164.5 mm (6.5 in)Longer than the 49 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, 49 years of values from 1951 to 2004.

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: 157.8 mm (6.2 in) in 1982; 156.0 mm (6.1 in) in 1987; 134.4 mm (5.3 in) in 1953.

Download the Data

  • Data for Chiang Rai standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Chiang Rai 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).