Thailand
Chiang Mai in December
In December, Chiang Mai averages a daytime high of 27 °C and a night-time low of 14 °C, with about 11 mm of rain over the month. By the measure used here it is one of the most comfortable months to visit; they run December and January.
- Average high
- 27 °C
- Average low
- 14 °C
- Rain in the month
- 11 mm
- Daylight on 15 Dec
- 11 h
- Comfortable month
- Yes
- Places to stay
- 406
When to go
How December compares with the rest of the year in Chiang Mai
December is the coolest month in Chiang Mai by average daytime high; across the year the highs run from 27 °C to 35 °C and the lows from 13 °C to 22 °C. By day, December is 2 °C cooler than November, and January is 1 °C warmer than December.
December brings 11 mm of rain, less than the monthly average of 102 mm (1226 mm a year); it is the 11th wettest month.
On 15 December the sun is up for about 11 h, against 11 h at the shortest and 13 h 20 min at the longest point of the year (calculated from the latitude, sunrise to sunset).
| Month | High | Low | Rain | Comfortable |
|---|---|---|---|---|
| January | 28 °C | 13 °C | 15 mm | Yes |
| February | 31 °C | 13 °C | 6 mm | |
| March | 33 °C | 17 °C | 22 mm | |
| April | 35 °C | 21 °C | 65 mm | |
| May | 33 °C | 22 °C | 172 mm | |
| June | 30 °C | 22 °C | 147 mm | |
| July | 30 °C | 22 °C | 174 mm | |
| August | 29 °C | 22 °C | 232 mm | |
| September | 30 °C | 21 °C | 222 mm | |
| October | 30 °C | 20 °C | 121 mm | |
| November | 29 °C | 18 °C | 39 mm | |
| December | 27 °C | 14 °C | 11 mm | Yes |
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
When to go
Is December a good time to visit Chiang Mai?
Yes, by the measure used here: in December the average high of 27 °C is between 18 °C and 29 °C and the 11 mm of rain is under 80 mm. The comfortable months in Chiang Mai are December and January.
The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.
Public holidays in Thailand in December
Nationwide public holidays; shops and offices may close on these dates.
When to go
Destinations near Chiang Mai that are comfortable in December
Within 300 km, nearest first, by the same measure.
Where to stay
Where to stay in Chiang Mai
This guide lists 406 places to stay in Chiang Mai, hotels recorded in Wikidata. By straight-line distance from the centre: under 1 km, 97; 1–3 km, 187; 3–10 km, 71; 10 km or more, 51.
Sources: climate from CRU TS v4.10 (Climatic Research Unit, University of East Anglia; Open Database License), 1991–2020 averages; day length calculated from the latitude; public holidays from python-holidays (MIT); places to stay from each operator's own public pages and Wikidata. How this guide is made.