Built 2026-10-15 (15 October 2026)

Chiang Mai Weather Records (TH000048327)

Record envelope, standing records and threshold days for Chiang Mai (TH000048327), Thailand, with 83 years of record.

Key Facts for Chiang Mai

  • Chiang Mai (TH000048327) is a weather station in Thailand at 18.78 latitude and 98.98 longitude, 313 m (1,027 ft) above sea level.
  • The station reports from 1943 to 2025, 83 years of record.
  • 1,464 records set at Chiang Mai still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Chiang Mai set a daily record high maximum temperature of 34.9 C (94.8 F) on 13 August 2025.

About the Station

  • Location: Thailand, 18.78 latitude, 98.98 longitude.
  • Elevation: 313 m (1,027 ft).
  • Period of record: 1943 to 2025, 83 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

14 days at or beyond a record
Daily record high and record low at Chiang Mai, with 2026 drawn through them The band shows the record high and record low for each calendar day at Chiang Mai. The lines show the 2026 daily maximum and minimum. 14 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 Mai. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Chiang Mai, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan36.0 C (96.8 F)3.7 C (38.7 F)33.0 C (91.4 F)14.4 C (57.9 F)
Feb38.9 C (102.0 F)6.7 C (44.1 F)36.2 C (97.2 F)15.5 C (59.9 F)
Mar42.2 C (108.0 F)10.0 C (50.0 F)39.5 C (103.1 F)20.7 C (69.3 F)
Apr42.5 C (108.5 F)10.0 C (50.0 F)39.8 C (103.6 F)21.6 C (70.9 F)
May42.5 C (108.5 F)18.3 C (64.9 F)39.2 C (102.6 F)22.5 C (72.5 F)
Jun39.4 C (102.9 F)19.1 C (66.4 F)38.3 C (100.9 F)23.7 C (74.7 F)
Jul39.0 C (102.2 F)20.5 C (68.9 F)35.9 C (96.6 F)23.0 C (73.4 F)
Aug37.7 C (99.9 F)20.0 C (68.0 F)37.7 C (99.9 F)23.6 C (74.5 F)
Sep37.8 C (100.0 F)16.8 C (62.2 F)n/an/a
Oct37.9 C (100.2 F)14.0 C (57.2 F)n/an/a
Nov37.8 C (100.0 F)6.0 C (42.8 F)n/an/a
Dec35.3 C (95.5 F)3.8 C (38.8 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Chiang Mai by the year they were set 1,464 records at Chiang Mai still stand. 1977 holds the most, with 90. 02550751001943: 181944: 71945: 91946: 101947: 71948: 181949: 611950: 121951: 51952: 141953: 141954: 191955: 241956: 111957: 161958: 141959: 211960: 261961: 181962: 51963: 201964: 81965: 181966: 151967: 101968: 91969: 251970: 181971: 301972: 151973: 161974: 221975: 231976: 221977: 901978: 531979: 531980: 201981: 91982: 21983: 131984: 21985: 91986: 71987: 81988: 101989: 21990: 61991: 111992: 161993: 41994: 111995: 41996: 61997: 81998: 161999: 222000: 132001: 92002: 82003: 42004: 42005: 92006: 142007: 42008: 82009: 152010: 222011: 112012: 302013: 182014: 132015: 372016: 312017: 242018: 152019: 292020: 272021: 132022: 272023: 492024: 562025: 121943195219611970197919881997200620152024
1,464 records at Chiang Mai still stand. 1977 holds the most, with 90.
Standing records at Chiang Mai by the year they were set
Year setStanding records
194318
19447
19459
194610
19477
194818
194961
195012
19515
195214
195314
195419
195524
195611
195716
195814
195921
196026
196118
19625
196320
19648
196518
196615
196710
19689
196925
197018
197130
197215
197316
197422
197523
197622
197790
197853
197953
198020
19819
19822
198313
19842
19859
19867
19878
198810
19892
19906
199111
199216
19934
199411
19954
19966
19978
199816
199922
200013
20019
20028
20034
20044
20059
200614
20074
20088
200915
201022
201111
201230
201318
201413
201537
201631
201724
201815
201929
202027
202113
202227
202349
202456
202512

All-Time Record Progression

4 new records
When Chiang Mai set new all-time records 4 all-time records were set at Chiang Mai between 6 January 1978 and 11 May 2016. Each dot is a new record. Record low maximum temperatureRecord daily precipitationRecord high maximum temperature6 January 1978: Record low maximum temperature 18.1 C (64.6 F)15 September 1994: Record daily precipitation 215.9 mm (8.5 in)1 May 2005: Record high maximum temperature 42.4 C (108.3 F)11 May 2016: Record high maximum temperature 42.5 C (108.5 F)19801985199019952000200520102015
4 all-time records were set at Chiang Mai between 6 January 1978 and 11 May 2016. Each dot is a new record.
When Chiang Mai set new all-time records
DateKindDetail
1978-01-06Record low maximum temperatureRecord low maximum temperature 18.1 C (64.6 F)
1994-09-15Record daily precipitationRecord daily precipitation 215.9 mm (8.5 in)
2005-05-01Record high maximum temperatureRecord high maximum temperature 42.4 C (108.3 F)
2016-05-11Record high maximum temperatureRecord high maximum temperature 42.5 C (108.5 F)

Wettest Day of Each Month

Sep: 215.9 mm (8.5 in)
Record daily precipitation for each month at Chiang Mai The wettest day on record for each calendar month at Chiang Mai. The most was 215.9 mm (8.5 in) on 15 September 1994. 0100200300 Jan: 70.1 mm (2.8 in), 9 January 2015 Jan Feb: 47.7 mm (1.9 in), 18 February 1953 Feb Mar: 99.1 mm (3.9 in), 27 March 1994 Mar Apr: 119.1 mm (4.7 in), 21 April 1996 Apr May: 151.9 mm (6.0 in), 5 May 1995 May Jun: 96.3 mm (3.8 in), 7 June 1953 Jun Jul: 135.6 mm (5.3 in), 31 July 2006 Jul Aug: 166.5 mm (6.6 in), 14 August 1968 Aug Sep: 215.9 mm (8.5 in), 15 September 1994 Sep Oct: 144.9 mm (5.7 in), 8 October 1954 Oct Nov: 120.9 mm (4.8 in), 3 November 2002 Nov Dec: 92.9 mm (3.7 in), 12 December 1980 Dec
The wettest day on record for each calendar month at Chiang Mai. The most was 215.9 mm (8.5 in) on 15 September 1994.
Record daily precipitation for each month at Chiang Mai
MonthRecord daily precipitation (mm)Date
Jan70.1 mm (2.8 in)9 January 2015
Feb47.7 mm (1.9 in)18 February 1953
Mar99.1 mm (3.9 in)27 March 1994
Apr119.1 mm (4.7 in)21 April 1996
May151.9 mm (6.0 in)5 May 1995
Jun96.3 mm (3.8 in)7 June 1953
Jul135.6 mm (5.3 in)31 July 2006
Aug166.5 mm (6.6 in)14 August 1968
Sep215.9 mm (8.5 in)15 September 1994
Oct144.9 mm (5.7 in)8 October 1954
Nov120.9 mm (4.8 in)3 November 2002
Dec92.9 mm (3.7 in)12 December 1980

Period of Record Coverage

1943 to 2025
Days with data per year at Chiang Mai 83 years of record at Chiang Mai, 1943 to 2025. 36 years have data for under 90 percent of days and are left out of rankings: 1944, 1945, 1946, 1947, 1949, 1950, 1951, 1988 and others. 1943: 354 of 365 days1944: 158 of 366 days1945: 127 of 365 days1946: 263 of 365 days1947: 211 of 365 days1948: 355 of 366 days1949: 272 of 365 days1950: 187 of 365 days1951: 6 of 365 days1952: 334 of 366 days1953: 361 of 365 days1954: 365 of 365 days1955: 364 of 365 days1956: 363 of 366 days1957: 364 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 365 of 366 days1961: 365 of 365 days1962: 365 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: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 365 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: 333 of 365 days1987: 332 of 365 days1988: 293 of 366 days1989: 202 of 365 days1990: 178 of 365 days1991: 201 of 365 days1992: 174 of 366 days1993: 309 of 365 days1994: 296 of 365 days1995: 299 of 365 days1996: 284 of 366 days1997: 266 of 365 days1998: 281 of 365 days1999: 324 of 365 days2000: 275 of 366 days2001: 251 of 365 days2002: 234 of 365 days2003: 227 of 365 days2004: 176 of 366 days2005: 216 of 365 days2006: 203 of 365 days2007: 196 of 365 days2008: 308 of 366 days2009: 353 of 365 days2010: 330 of 365 days2011: 352 of 365 days2012: 360 of 366 days2013: 351 of 365 days2014: 364 of 365 days2015: 356 of 365 days2016: 346 of 366 days2017: 329 of 365 days2018: 170 of 365 days2019: 180 of 365 days2020: 213 of 366 days2021: 234 of 365 days2022: 303 of 365 days2023: 294 of 365 days2024: 269 of 366 days2025: 205 of 365 days195019651980199520102025
83 years of record at Chiang Mai, 1943 to 2025. 36 years have data for under 90 percent of days and are left out of rankings: 1944, 1945, 1946, 1947, 1949, 1950, 1951, 1988 and others.
Days with data per year at Chiang Mai
YearDays with dataShare of yearComplete
194335497%Yes
194415843%No
194512735%No
194626372%No
194721158%No
194835597%Yes
194927275%No
195018751%No
195162%No
195233491%Yes
195336199%Yes
1954365100%Yes
1955364100%Yes
195636399%Yes
1957364100%Yes
1958365100%Yes
1959365100%Yes
1960365100%Yes
1961365100%Yes
1962365100%Yes
1963364100%Yes
1964366100%Yes
1965364100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976365100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198633391%Yes
198733291%Yes
198829380%No
198920255%No
199017849%No
199120155%No
199217448%No
199330985%No
199429681%No
199529982%No
199628478%No
199726673%No
199828177%No
199932489%No
200027575%No
200125169%No
200223464%No
200322762%No
200417648%No
200521659%No
200620356%No
200719654%No
200830884%No
200935397%Yes
201033090%Yes
201135296%Yes
201236098%Yes
201335196%Yes
2014364100%Yes
201535698%Yes
201634695%Yes
201732990%Yes
201817047%No
201918049%No
202021358%No
202123464%No
202230383%No
202329481%No
202426973%No
202520556%No

Latest Records

20
Latest records at Chiang Mai
DateStationRecordValueBeat old record byOld record stoodSignificance
13 August 2025Chiang Mai, THdaily high max34.9 C (94.8 F)0.4 C (0.7 F)0 years9 of 100 (Routine)
12 August 2025Chiang Mai, THdaily high max35.0 C (95.0 F)1.4 C (2.5 F)11 years17 of 100 (Routine)
5 August 2025Chiang Mai, THmonthly high max37.7 C (99.9 F)0.2 C (0.4 F)0 years18 of 100 (Routine)
4 August 2025Chiang Mai, THmonthly high max37.5 C (99.5 F)0.7 C (1.3 F)9 years23 of 100 (Routine)
3 August 2025Chiang Mai, THdaily high max36.1 C (97.0 F)1.6 C (2.9 F)43 years27 of 100 (Routine)
1 August 2025Chiang Mai, THdaily high max (Tie)35.0 C (95.0 F)tie4 years2 of 100 (Routine)
23 July 2025Chiang Mai, THdaily rain34.8 mm (1.4 in)0.8 mm (0.03 in)28 years16 of 100 (Routine)
10 June 2025Chiang Mai, THdaily rain39.9 mm (1.6 in)5.9 mm (0.23 in)40 years25 of 100 (Routine)
9 June 2025Chiang Mai, THdaily high max (Tie)36.8 C (98.2 F)tie27 years4 of 100 (Routine)
8 June 2025Chiang Mai, THdaily high min (Tie)26.2 C (79.2 F)tie0 years2 of 100 (Routine)
7 June 2025Chiang Mai, THdaily high max38.3 C (100.9 F)0.4 C (0.7 F)10 years12 of 100 (Routine)
24 May 2025Chiang Mai, THdaily rain73.9 mm (2.9 in)15.0 mm (0.6 in)7 years19 of 100 (Routine)
17 May 2025Chiang Mai, THdaily rain84.6 mm (3.3 in)7.6 mm (0.30 in)27 years20 of 100 (Routine)
18 April 2025Chiang Mai, THdaily rain28.7 mm (1.1 in)1.3 mm (0.05 in)64 years27 of 100 (Routine)
13 April 2025Chiang Mai, THdaily rain65.3 mm (2.6 in)28.2 mm (1.1 in)75 years51 of 100 (Notable)
2 April 2025Chiang Mai, THdaily high min24.7 C (76.5 F)0.8 C (1.4 F)12 years14 of 100 (Routine)
30 March 2025Chiang Mai, THdaily high max39.5 C (103.1 F)0.4 C (0.7 F)20 years15 of 100 (Routine)
26 March 2025Chiang Mai, THdaily high max38.8 C (101.8 F)0.1 C (0.2 F)67 years28 of 100 (Routine)
25 March 2025Chiang Mai, THdaily high max (Tie)39.0 C (102.2 F)tie19 years3 of 100 (Routine)
2 March 2025Chiang Mai, THdaily high max37.7 C (99.9 F)0.1 C (0.2 F)55 years24 of 100 (Routine)

Climate Trend

30 complete years, 1943 to 1980
Annual mean temperature at Chiang Mai as warming stripes, 1943 to 1980 One stripe for each of 30 complete years at Chiang Mai, 1943 to 1980. Blue stripes are years cooler than the station's own mean of 25.8 C (78.4 F); red stripes are warmer. The coolest year was 1977, at 24.1 C (75.3 F), and the warmest was 1979, at 27.3 C (81.1 F). The strongest colour marks a difference of 1.8 C (3.2 F). 1943: 25.7 C, -0.1 C from the station mean1948: 25.8 C, 0.0 C from the station mean1953: 25.7 C, -0.1 C from the station mean1954: 25.7 C, -0.1 C from the station mean1955: 25.0 C, -0.7 C from the station mean1956: 25.4 C, -0.3 C from the station mean1957: 26.1 C, +0.3 C from the station mean1958: 26.1 C, +0.3 C from the station mean1959: 26.3 C, +0.6 C from the station mean1960: 26.1 C, +0.3 C from the station mean1961: 25.5 C, -0.3 C from the station mean1962: 25.6 C, -0.2 C from the station mean1963: 25.5 C, -0.2 C from the station mean1964: 25.5 C, -0.2 C from the station mean1965: 25.9 C, +0.1 C from the station mean1966: 26.4 C, +0.7 C from the station mean1967: 25.7 C, 0.0 C from the station mean1968: 25.8 C, 0.0 C from the station mean1969: 25.9 C, +0.1 C from the station mean1970: 25.7 C, -0.1 C from the station mean1971: 25.0 C, -0.8 C from the station mean1972: 25.6 C, -0.1 C from the station mean1973: 25.5 C, -0.2 C from the station mean1974: 25.3 C, -0.5 C from the station mean1975: 26.2 C, +0.4 C from the station mean1976: 25.2 C, -0.6 C from the station mean1977: 24.1 C, -1.7 C from the station mean1978: 26.5 C, +0.8 C from the station mean1979: 27.3 C, +1.5 C from the station mean1980: 27.0 C, +1.2 C from the station mean19431950195519601965197019751980
One stripe for each of 30 complete years at Chiang Mai, 1943 to 1980. Blue stripes are years cooler than the station's own mean of 25.8 C (78.4 F); red stripes are warmer. The coolest year was 1977, at 24.1 C (75.3 F), and the warmest was 1979, at 27.3 C (81.1 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Chiang Mai as warming stripes, 1943 to 1980
YearAnnual mean temperatureDifference from the station mean
194325.7 C-0.09 C
194825.8 C+0.03 C
195325.7 C-0.08 C
195425.7 C-0.07 C
195525.0 C-0.73 C
195625.4 C-0.32 C
195726.1 C+0.30 C
195826.1 C+0.35 C
195926.3 C+0.58 C
196026.1 C+0.32 C
196125.5 C-0.28 C
196225.6 C-0.17 C
196325.5 C-0.22 C
196425.5 C-0.23 C
196525.9 C+0.10 C
196626.4 C+0.67 C
196725.7 C-0.04 C
196825.8 C+0.02 C
196925.9 C+0.09 C
197025.7 C-0.07 C
197125.0 C-0.79 C
197225.6 C-0.12 C
197325.5 C-0.24 C
197425.3 C-0.50 C
197526.2 C+0.41 C
197625.2 C-0.60 C
197724.1 C-1.71 C
197826.5 C+0.78 C
197927.3 C+1.49 C
198027.0 C+1.22 C

The fitted trend in annual mean temperature here over 1943 to 1980 is 0.1 C (-0.2 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.3 to 0.6) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Chiang Mai
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (-0.2 to 0.3) per decade0.1 F (-0.3 to 0.6) per decade1943 to 198030Not clearly different from zero
Mean daily maximum-0.1 C (-0.4 to 0.1) per decade-0.2 F (-0.7 to 0.2) per decade1943 to 198030Not clearly different from zero
Mean daily minimum0.29 C (0.01 to 0.57) per decade0.52 F (0.02 to 1.02) per decade1943 to 198030Rise

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

1943 to 2025
Yearly extremes at Chiang Mai: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.5 C (108.5 F)201639.6 C (103.3 F)83
Coldest night (TNn)3.7 C (38.7 F)19749.7 C (49.5 F)78
Wettest day (Rx1day)215.9 mm (8.5 in)199475.1 mm (3.0 in)83
Wettest five days (Rx5day)296.3 mm (11.7 in)1967139.3 mm (5.5 in)83
Longest dry spell (CDD)96 days198347 days83

Hottest day (TXx)

Hottest day (TXx) at Chiang Mai by year The hottest day of the year at Chiang Mai, 1943 to 2025. The record is 42.5 C (108.5 F) in 2016, marked on the chart; the median year is 39.6 C (103.3 F). 32.53537.54042.51960198020002020Record: 42.5 C (108.5 F) in 2016
The hottest day of the year at Chiang Mai, 1943 to 2025. The record is 42.5 C (108.5 F) in 2016, marked on the chart; the median year is 39.6 C (103.3 F).
Hottest day (TXx) at Chiang Mai by year
YearHottest day (TXx)
194339.4 C (102.9 F)
194440.0 C (104.0 F)
194533.9 C (93.0 F)
194637.8 C (100.0 F)
194739.4 C (102.9 F)
194838.9 C (102.0 F)
194937.8 C (100.0 F)
195038.3 C (100.9 F)
195136.6 C (97.9 F)
195238.2 C (100.8 F)
195338.4 C (101.1 F)
195439.0 C (102.2 F)
195539.8 C (103.6 F)
195638.9 C (102.0 F)
195740.7 C (105.3 F)
195841.2 C (106.2 F)
195941.0 C (105.8 F)
196041.5 C (106.7 F)
196139.0 C (102.2 F)
196238.6 C (101.5 F)
196340.2 C (104.4 F)
196439.3 C (102.7 F)
196540.4 C (104.7 F)
196641.2 C (106.2 F)
196740.0 C (104.0 F)
196839.4 C (102.9 F)
196941.4 C (106.5 F)
197038.1 C (100.6 F)
197138.0 C (100.4 F)
197237.5 C (99.5 F)
197338.6 C (101.5 F)
197438.2 C (100.8 F)
197539.8 C (103.6 F)
197638.0 C (100.4 F)
197735.0 C (95.0 F)
197840.0 C (104.0 F)
197940.0 C (104.0 F)
198040.2 C (104.4 F)
198139.3 C (102.7 F)
198238.2 C (100.8 F)
198341.3 C (106.3 F)
198439.6 C (103.3 F)
198539.8 C (103.6 F)
198639.5 C (103.1 F)
198740.3 C (104.5 F)
198840.1 C (104.2 F)
198939.6 C (103.3 F)
199039.4 C (102.9 F)
199140.5 C (104.9 F)
199240.1 C (104.2 F)
199339.1 C (102.4 F)
199438.5 C (101.3 F)
199541.0 C (105.8 F)
199639.2 C (102.6 F)
199739.0 C (102.2 F)
199840.1 C (104.2 F)
199938.2 C (100.8 F)
200037.8 C (100.0 F)
200139.4 C (102.9 F)
200239.8 C (103.6 F)
200338.0 C (100.4 F)
200441.0 C (105.8 F)
200542.4 C (108.3 F)
200639.6 C (103.3 F)
200739.1 C (102.4 F)
200840.1 C (104.2 F)
200940.1 C (104.2 F)
201041.0 C (105.8 F)
201137.1 C (98.8 F)
201239.5 C (103.1 F)
201339.7 C (103.5 F)
201439.2 C (102.6 F)
201539.6 C (103.3 F)
201642.5 C (108.5 F)
201740.5 C (104.9 F)
201839.5 C (103.1 F)
201941.0 C (105.8 F)
202042.2 C (108.0 F)
202140.0 C (104.0 F)
202239.3 C (102.7 F)
202341.2 C (106.2 F)
202442.5 C (108.5 F)
202539.8 C (103.6 F)

Coldest night (TNn)

Coldest night (TNn) at Chiang Mai by year The coldest night of the year at Chiang Mai, 1943 to 2025. The record is 3.7 C (38.7 F) in 1974, marked on the chart; the median year is 9.7 C (49.5 F). 051015201960198020002020Record: 3.7 C (38.7 F) in 1974
The coldest night of the year at Chiang Mai, 1943 to 2025. The record is 3.7 C (38.7 F) in 1974, marked on the chart; the median year is 9.7 C (49.5 F).
Coldest night (TNn) at Chiang Mai by year
YearColdest night (TNn)
19438.3 C (46.9 F)
194410.6 C (51.1 F)
194510.0 C (50.0 F)
194610.0 C (50.0 F)
194710.6 C (51.1 F)
19487.2 C (45.0 F)
19497.8 C (46.0 F)
19506.7 C (44.1 F)
19518.4 C (47.1 F)
19528.7 C (47.7 F)
19536.1 C (43.0 F)
19546.9 C (44.4 F)
19556.1 C (43.0 F)
19567.0 C (44.6 F)
19577.6 C (45.7 F)
19588.4 C (47.1 F)
19599.0 C (48.2 F)
19608.5 C (47.3 F)
19617.5 C (45.5 F)
19629.1 C (48.4 F)
19638.0 C (46.4 F)
19646.8 C (44.2 F)
19658.5 C (47.3 F)
19669.9 C (49.8 F)
19678.6 C (47.5 F)
19688.7 C (47.7 F)
19696.1 C (43.0 F)
19708.9 C (48.0 F)
19716.0 C (42.8 F)
19728.1 C (46.6 F)
19735.0 C (41.0 F)
19743.7 C (38.7 F)
19757.1 C (44.8 F)
19767.5 C (45.5 F)
19779.0 C (48.2 F)
19789.8 C (49.6 F)
197912.3 C (54.1 F)
198011.7 C (53.1 F)
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
198610.8 C (51.4 F)
19879.6 C (49.3 F)
198811.0 C (51.8 F)
19898.6 C (47.5 F)
19908.9 C (48.0 F)
199110.8 C (51.4 F)
19929.8 C (49.6 F)
19937.7 C (45.9 F)
199411.2 C (52.2 F)
19959.5 C (49.1 F)
19969.4 C (48.9 F)
199710.1 C (50.2 F)
19988.7 C (47.7 F)
19993.8 C (38.8 F)
200010.3 C (50.5 F)
200110.0 C (50.0 F)
200212.5 C (54.5 F)
200312.5 C (54.5 F)
200411.3 C (52.3 F)
200511.5 C (52.7 F)
20069.8 C (49.6 F)
200711.7 C (53.1 F)
200811.5 C (52.7 F)
200910.9 C (51.6 F)
201012.5 C (54.5 F)
201113.4 C (56.1 F)
201210.0 C (50.0 F)
201310.5 C (50.9 F)
201411.0 C (51.8 F)
201514.4 C (57.9 F)
201610.0 C (50.0 F)
20179.6 C (49.3 F)
201814.8 C (58.6 F)
201918.0 C (64.4 F)
202013.0 C (55.4 F)
202114.5 C (58.1 F)
202215.9 C (60.6 F)
202314.0 C (57.2 F)
202414.6 C (58.3 F)
202514.4 C (57.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Chiang Mai by year The wettest day of the year at Chiang Mai, 1943 to 2025. The record is 215.9 mm (8.5 in) in 1994, marked on the chart; the median year is 75.1 mm (3.0 in). 01002003001960198020002020Record: 215.9 mm (8.5 in) in 1994
The wettest day of the year at Chiang Mai, 1943 to 2025. The record is 215.9 mm (8.5 in) in 1994, marked on the chart; the median year is 75.1 mm (3.0 in).
Wettest day (Rx1day) at Chiang Mai by year
YearWettest day (Rx1day)
194369.1 mm (2.7 in)
194434.0 mm (1.3 in)
194555.9 mm (2.2 in)
194656.9 mm (2.2 in)
194735.1 mm (1.4 in)
194872.9 mm (2.9 in)
1949104.9 mm (4.1 in)
1950117.1 mm (4.6 in)
195173.2 mm (2.9 in)
195272.7 mm (2.9 in)
1953110.5 mm (4.4 in)
1954144.9 mm (5.7 in)
195554.6 mm (2.1 in)
195655.9 mm (2.2 in)
195785.4 mm (3.4 in)
195860.2 mm (2.4 in)
195947.9 mm (1.9 in)
196068.0 mm (2.7 in)
196194.4 mm (3.7 in)
196255.6 mm (2.2 in)
196351.5 mm (2.0 in)
1964118.4 mm (4.7 in)
196555.7 mm (2.2 in)
196635.7 mm (1.4 in)
1967131.6 mm (5.2 in)
1968166.5 mm (6.6 in)
196953.2 mm (2.1 in)
1970113.3 mm (4.5 in)
197171.4 mm (2.8 in)
197259.5 mm (2.3 in)
197375.4 mm (3.0 in)
197470.8 mm (2.8 in)
197577.1 mm (3.0 in)
197674.9 mm (2.9 in)
197769.7 mm (2.7 in)
1978115.5 mm (4.5 in)
197966.2 mm (2.6 in)
198092.9 mm (3.7 in)
198175.1 mm (3.0 in)
198287.5 mm (3.4 in)
198354.7 mm (2.2 in)
198436.3 mm (1.4 in)
198573.6 mm (2.9 in)
198656.9 mm (2.2 in)
1987122.9 mm (4.8 in)
198893.0 mm (3.7 in)
198963.0 mm (2.5 in)
199087.1 mm (3.4 in)
199156.9 mm (2.2 in)
1992105.9 mm (4.2 in)
1993102.1 mm (4.0 in)
1994215.9 mm (8.5 in)
1995151.9 mm (6.0 in)
1996119.1 mm (4.7 in)
199765.0 mm (2.6 in)
199877.0 mm (3.0 in)
199913.0 mm (0.5 in)
200048.8 mm (1.9 in)
200190.4 mm (3.6 in)
2002120.9 mm (4.8 in)
200384.1 mm (3.3 in)
2004137.7 mm (5.4 in)
2005103.1 mm (4.1 in)
2006135.6 mm (5.3 in)
2007103.4 mm (4.1 in)
200872.6 mm (2.9 in)
2009122.2 mm (4.8 in)
2010119.9 mm (4.7 in)
201179.0 mm (3.1 in)
201269.6 mm (2.7 in)
2013105.2 mm (4.1 in)
201472.1 mm (2.8 in)
201570.1 mm (2.8 in)
201651.8 mm (2.0 in)
2017124.7 mm (4.9 in)
201868.6 mm (2.7 in)
201989.2 mm (3.5 in)
202081.5 mm (3.2 in)
202170.9 mm (2.8 in)
2022111.0 mm (4.4 in)
202378.0 mm (3.1 in)
202461.7 mm (2.4 in)
202584.6 mm (3.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Chiang Mai by year The wettest five days of the year at Chiang Mai, 1943 to 2025. The record is 296.3 mm (11.7 in) in 1967, marked on the chart; the median year is 139.3 mm (5.5 in). 01002003001960198020002020Record: 296.3 mm (11.7 in) in 1967
The wettest five days of the year at Chiang Mai, 1943 to 2025. The record is 296.3 mm (11.7 in) in 1967, marked on the chart; the median year is 139.3 mm (5.5 in).
Wettest five days (Rx5day) at Chiang Mai by year
YearWettest five days (Rx5day)
1943166.2 mm (6.5 in)
194473.6 mm (2.9 in)
1945145.1 mm (5.7 in)
1946131.1 mm (5.2 in)
194766.1 mm (2.6 in)
1948184.2 mm (7.3 in)
1949139.9 mm (5.5 in)
1950255.8 mm (10.1 in)
1951174.7 mm (6.9 in)
1952141.2 mm (5.6 in)
1953206.6 mm (8.1 in)
1954173.0 mm (6.8 in)
1955120.1 mm (4.7 in)
1956108.2 mm (4.3 in)
1957114.0 mm (4.5 in)
1958138.3 mm (5.4 in)
195991.0 mm (3.6 in)
1960108.5 mm (4.3 in)
1961200.6 mm (7.9 in)
1962130.5 mm (5.1 in)
1963123.1 mm (4.8 in)
1964153.2 mm (6.0 in)
196596.9 mm (3.8 in)
196692.3 mm (3.6 in)
1967296.3 mm (11.7 in)
1968194.4 mm (7.7 in)
1969162.0 mm (6.4 in)
1970151.2 mm (6.0 in)
1971139.3 mm (5.5 in)
1972128.4 mm (5.1 in)
1973137.1 mm (5.4 in)
1974120.1 mm (4.7 in)
1975168.3 mm (6.6 in)
197699.7 mm (3.9 in)
1977111.8 mm (4.4 in)
1978192.9 mm (7.6 in)
1979100.0 mm (3.9 in)
1980158.0 mm (6.2 in)
198190.0 mm (3.5 in)
1982138.3 mm (5.4 in)
1983106.8 mm (4.2 in)
198486.3 mm (3.4 in)
1985125.0 mm (4.9 in)
198687.3 mm (3.4 in)
1987181.1 mm (7.1 in)
1988250.6 mm (9.9 in)
1989112.0 mm (4.4 in)
1990139.1 mm (5.5 in)
1991142.8 mm (5.6 in)
1992117.0 mm (4.6 in)
1993151.1 mm (5.9 in)
1994271.8 mm (10.7 in)
1995217.9 mm (8.6 in)
1996182.1 mm (7.2 in)
1997111.0 mm (4.4 in)
1998108.0 mm (4.3 in)
199920.9 mm (0.8 in)
200077.6 mm (3.1 in)
2001127.5 mm (5.0 in)
2002153.9 mm (6.1 in)
2003152.3 mm (6.0 in)
2004192.4 mm (7.6 in)
2005179.9 mm (7.1 in)
2006166.7 mm (6.6 in)
2007148.7 mm (5.9 in)
2008141.0 mm (5.6 in)
2009137.7 mm (5.4 in)
2010194.6 mm (7.7 in)
2011115.8 mm (4.6 in)
2012131.7 mm (5.2 in)
2013158.8 mm (6.3 in)
2014140.2 mm (5.5 in)
201584.7 mm (3.3 in)
2016101.9 mm (4.0 in)
2017217.2 mm (8.6 in)
2018111.0 mm (4.4 in)
2019105.0 mm (4.1 in)
2020173.0 mm (6.8 in)
2021155.7 mm (6.1 in)
2022229.9 mm (9.1 in)
2023138.9 mm (5.5 in)
2024240.1 mm (9.5 in)
2025171.9 mm (6.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Chiang Mai by year The longest dry spell of the year at Chiang Mai, 1943 to 2025. The record is 96 days in 1983, marked on the chart; the median year is 47 days. 02550751001960198020002020Record: 96 days in 1983
The longest dry spell of the year at Chiang Mai, 1943 to 2025. The record is 96 days in 1983, marked on the chart; the median year is 47 days.
Longest dry spell (CDD) at Chiang Mai by year
YearLongest dry spell (CDD)
19436 days
19442 days
19457 days
19463 days
19475 days
19483 days
19495 days
19505 days
195149 days
195261 days
195349 days
195453 days
195550 days
195664 days
195793 days
195866 days
195947 days
196035 days
196148 days
196260 days
196357 days
196450 days
196566 days
196687 days
196752 days
196850 days
196971 days
197046 days
197169 days
197247 days
197365 days
197460 days
197547 days
197655 days
197740 days
197848 days
197986 days
198074 days
198189 days
198294 days
198396 days
198470 days
198585 days
198636 days
198727 days
198895 days
198987 days
199039 days
199148 days
199258 days
199369 days
199436 days
199586 days
199654 days
199785 days
199867 days
199921 days
200013 days
20015 days
200214 days
200362 days
200481 days
200563 days
20063 days
20075 days
20084 days
20094 days
20104 days
20114 days
20124 days
20134 days
20144 days
20153 days
20163 days
20173 days
20187 days
20197 days
20205 days
20219 days
20225 days
20234 days
20248 days
20254 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

50 years, 1951 to 2004

A day with at least 77.2 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 221.9 mm (8.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Chiang Mai: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years77.2 mm (3.0 in)
5 years107.7 mm (4.2 in)
10 years130.8 mm (5.1 in)
25 years163.9 mm (6.5 in)
50 years191.5 mm (7.5 in)
100 years221.9 mm (8.7 in)Longer than the 50 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, 50 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: 215.9 mm (8.5 in) in 1994; 166.5 mm (6.6 in) in 1968; 151.9 mm (6.0 in) in 1995.

Download the Data

  • Data for Chiang Mai standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Chiang Mai 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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