Chiang Mai Intl climate by month
Averages and records for each calendar month at Chiang Mai Intl, Thailand, from 1943 to 2025. The warmest month is April, averaging 36.1°C; the coolest is December at 28.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 29.4°C | 13.2°C | 36.0°C23 January 2016 | 3.7°C2 January 1974 | 60 / 82 |
| February | 32.4°C | 14.0°C | 38.9°C23 February 1948 | 6.7°C15 February 1950 | 58 / 82 |
| March | 35.1°C | 17.4°C | 42.2°C31 March 2020 | 10.0°C12 March 1949 | 57 / 81 |
| April | 36.1°C | 21.3°C | 42.5°C30 April 2024 | 10.0°C9 April 2012 | 53 / 81 |
| May | 34.4°C | 23.3°C | 42.5°C11 May 2016 | 18.3°C16 May 2006 | 61 / 82 |
| June | 32.7°C | 23.6°C | 39.4°C2 June 1943 | 19.1°C18 June 1954 | 58 / 81 |
| July | 32.0°C | 23.4°C | 39.0°C19 July 2019 | 20.5°C30 July 1977 | 58 / 81 |
| August | 31.3°C | 23.2°C | 37.7°C5 August 2025 | 20.0°C25 August 1954 | 57 / 80 |
| September | 31.6°C | 22.9°C | 37.8°C21 September 1949 | 16.8°C25 September 1977 | 59 / 80 |
| October | 31.3°C | 21.5°C | 37.9°C17 October 1998 | 14.0°C26 October 1994 | 56 / 80 |
| November | 30.3°C | 18.7°C | 37.8°C1 November 1946 | 6.0°C21 November 1971 | 53 / 79 |
| December | 28.8°C | 14.9°C | 35.3°C17 December 1998 | 3.8°C25 December 1999 | 57 / 80 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 53 to 61 years each.
See what Chiang Mai Intl is doing right now
Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.