Climate averages 1991–2020
Chiang Mai weather
in July.
A hot, wet month: the 6th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Chiang Mai: daytime highs average 29.9°C and nights cool to about 23.8°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 175 mm of rain on roughly 22 days, which makes July a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 09 min on an average July day.
The nearest other city in this atlas is Lampang (77 km away). In July its highs average 29.6°C, about as warm as Chiang Mai, with 202 mm of rain.
Among the 46 cities listed in Thailand, Chiang Mai ranks 41st of 46 for the warmest July highs and 34th of 46 for the driest July (rainfall, lowest first). The mean July high of those 46 cities is 31.0°C; Chiang Mai is 1.2°C cooler than that mean.
From July to August, average highs fall by 0.7°C to 29.1°C, and monthly rainfall rises from 175 mm to 236 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Chiang Mai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.1°C16.2°C | 16.2°C | 6.7 | 1.3 | 11.111 h |
| February | 31.3°C18.4°C | 18.4°C | 3.3 | 0.7 | 11.512 h |
| March | 34.3°C21.7°C | 21.7°C | 12 | 2.1 | 12.012 h |
| April | 35.8°C24.5°C | 24.5°C | 26 | 4.3 | 12.613 h |
| May | 33.1°C24.6°C | 24.6°C | 99 | 13.1 | 13.013 h |
| June | 30.9°C24.1°C | 24.1°C | 120 | 18.3 | 13.213 h |
| July, selected | 29.9°C23.8°C | 23.8°C | 175 | 21.9 | 13.113 h |
| August | 29.1°C23.4°C | 23.4°C | 236 | 25.0 | 12.813 h |
| September | 29.3°C22.9°C | 22.9°C | 227 | 23.4 | 12.312 h |
| October | 28.9°C21.5°C | 21.5°C | 114 | 15.7 | 11.712 h |
| November | 28.3°C18.8°C | 18.8°C | 21 | 4.0 | 11.311 h |
| December | 27.1°C16.0°C | 16.0°C | 9.1 | 1.2 | 11.011 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Lampang in JulyThailand · 77 kmHigh 29.6°C · Low 23.7°C · 202 mm rain
- Chiang Rai in JulyThailand · 153 kmHigh 29.5°C · Low 23.4°C · 398 mm rain
- Nyaunglebin in JulyMyanmar · 256 kmHigh 28.4°C · Low 23.8°C · 472 mm rain
- Taungoo in JulyMyanmar · 269 kmHigh 28.0°C · Low 23.4°C · 440 mm rain
- Thaton in JulyMyanmar · 269 kmHigh 27.6°C · Low 24.2°C · 889 mm rain
- Mawlamyine in JulyMyanmar · 293 kmHigh 27.5°C · Low 24.2°C · 733 mm rain
- Yawnghwe in JulyMyanmar · 299 kmHigh 26.0°C · Low 20.8°C · 158 mm rain
- Taunggyi in JulyMyanmar · 301 kmHigh 23.3°C · Low 17.8°C · 158 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Chiang Mai) is explained once on the Chiang Mai year overview and on the Sources, method and limits page.