Thailand
Chiang Mai in May
In May, Chiang Mai averages a daytime high of 33 °C and a night-time low of 22 °C, with about 172 mm of rain over the month. It falls outside Chiang Mai's most comfortable months, December and January.
- Average high
- 33 °C
- Average low
- 22 °C
- Rain in the month
- 172 mm
- Daylight on 15 May
- 13 h
- Comfortable month
- No
- Places to stay
- 406
When to go
How May compares with the rest of the year in Chiang Mai
May is tied for the 2nd warmest 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, May is 2 °C cooler than April, and June is 2 °C cooler than May.
May brings 172 mm of rain, more than the monthly average of 102 mm (1226 mm a year); it is the 4th wettest month.
On 15 May the sun is up for about 13 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 May a good time to visit Chiang Mai?
Not by the measure used here: the average high of 33 °C is above 29 °C and about 172 mm of rain is 80 mm or more. The comfortable months in Chiang Mai are December and January; the nearest are January, before, and December, after.
The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.
Public holidays in Thailand in May
Nationwide public holidays; shops and offices may close on these dates.
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.