Chiang Rai Climate by Month
Chiang Rai, Thailand
Warm all year, with a rainy season from May to September.
Warm all year, with a rainy season from May to September: that's Chiang Rai's climate in short. Afternoon highs range from 84°F (29°C) in December to 97°F (36°C) in April, and January nights average 56°F (14°C). Of the 51 in (1306 mm) of rain in a typical year, 78% falls from May to September.
- Warmest month
- 97°F(36°C)
- Average high, April
- Coldest nights
- 56°F(14°C)
- Average low, January
- Rain per year
- 51 in(1306 mm)
- Wettest: August
- Humidity
- 70%
- Sunniest: April
Best and worst months in Chiang Rai
Best for weatherThe most comfortable weather comes in December and January, with highs around 84°F (29°C) and almost no rain.
Least pleasantJuly and August are the least pleasant; August is the wettest, with 11 in (277 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in January.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Chiang Rai weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuaryBest | 85°F(29°C) | 56°F(14°C) | 0.4 in(10 mm) | 66% | 4.8 |
| FebFebruary | 91°F(33°C) | 58°F(15°C) | 0.4 in(10 mm) | 58% | 5.6 |
| MarMarch | 94°F(35°C) | 64°F(18°C) | 0.9 in(24 mm) | 56% | 5.8 |
| AprApril | 97°F(36°C) | 71°F(22°C) | 3.6 in(92 mm) | 60% | 6.0 |
| MayMay | 94°F(34°C) | 74°F(23°C) | 6.2 in(157 mm) | 68% | 5.7 |
| JunJune | 91°F(33°C) | 76°F(24°C) | 5.3 in(134 mm) | 74% | 5.1 |
| JulJuly | 89°F(32°C) | 75°F(24°C) | 9.6 in(243 mm) | 77% | 4.5 |
| AugAugust | 89°F(32°C) | 75°F(24°C) | 11 in(277 mm) | 79% | 4.6 |
| SepSeptember | 89°F(32°C) | 74°F(23°C) | 8.0 in(203 mm) | 79% | 5.0 |
| OctOctober | 88°F(31°C) | 71°F(22°C) | 4.0 in(102 mm) | 78% | 4.9 |
| NovNovember | 87°F(30°C) | 64°F(18°C) | 1.4 in(36 mm) | 73% | 4.6 |
| DecDecemberBest | 84°F(29°C) | 59°F(15°C) | 0.7 in(18 mm) | 73% | 4.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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