Climate averages 1991–2020
Chiang Rai weather
in April.
A hot, wet month: the warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Chiang Rai: daytime highs average 33.6°C and nights cool to about 22.4°C. By daytime temperature it is the warmest month of the year.
Expect about 132 mm of rain on roughly 12 days, which makes April a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 35 min on an average April day.
The nearest other city in this atlas is Chiang Mai (153 km away). In April its highs average 35.8°C, 2.2°C warmer than Chiang Rai, with 26 mm of rain.
Among the 46 cities listed in Thailand, Chiang Rai ranks 34th of 46 for the warmest April highs and 44th of 46 for the driest April (rainfall, lowest first). The mean April high of those 46 cities is 33.9°C; Chiang Rai is 0.3°C cooler than that mean.
From April to May, average highs fall by 2.1°C to 31.5°C, and monthly rainfall rises from 132 mm to 292 mm.
The annual picture
April 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 Rai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.6°C15.0°C | 15.0°C | 22 | 3.0 | 11.111 h |
| February | 30.0°C16.2°C | 16.2°C | 14 | 2.5 | 11.511 h |
| March | 33.0°C19.3°C | 19.3°C | 42 | 5.1 | 12.012 h |
| April, selected | 33.6°C22.4°C | 22.4°C | 132 | 11.8 | 12.613 h |
| May | 31.5°C23.4°C | 23.4°C | 292 | 22.8 | 13.113 h |
| June | 30.4°C23.7°C | 23.7°C | 297 | 26.2 | 13.313 h |
| July | 29.5°C23.4°C | 23.4°C | 398 | 28.4 | 13.213 h |
| August | 29.2°C23.2°C | 23.2°C | 383 | 28.8 | 12.813 h |
| September | 29.0°C22.9°C | 22.9°C | 295 | 25.1 | 12.312 h |
| October | 28.4°C21.6°C | 21.6°C | 139 | 17.8 | 11.712 h |
| November | 27.2°C18.4°C | 18.4°C | 49 | 6.6 | 11.211 h |
| December | 25.5°C15.4°C | 15.4°C | 27 | 3.7 | 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
April in nearby cities
- Chiang Mai in AprilThailand · 153 kmHigh 35.8°C · Low 24.5°C · 26 mm rain
- Lampang in AprilThailand · 183 kmHigh 35.9°C · Low 24.9°C · 47 mm rain
- Kēng Tung in AprilMyanmar · 192 kmHigh 32.0°C · Low 20.1°C · 45 mm rain
- Möng Yang in AprilMyanmar · 216 kmHigh 31.2°C · Low 18.5°C · 54 mm rain
- Yunjinghong in AprilChina · 255 kmHigh 32.9°C · Low 20.0°C · 93 mm rain
- Menglang in AprilChina · 295 kmHigh 30.2°C · Low 19.1°C · 43 mm rain
- Taunggyi in AprilMyanmar · 307 kmHigh 28.4°C · Low 16.4°C · 28 mm rain
- Yawnghwe in AprilMyanmar · 314 kmHigh 31.6°C · Low 20.0°C · 28 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 Rai) is explained once on the Chiang Rai year overview and on the Sources, method and limits page.