Chiang Rai weather in April
April in Chiang Rai: sweltering, rainy, with poor air quality — fine if you can take poor air.
#7 of 12 months in Chiang Rai · #772 of 897 destinations to visit in April · comfort 67/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Chiang Rai in April
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Chiang Rai climate normals — April
| Daytime high | 35°C / 94°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 23°C / 73°F | |
| Rainfall | 98 mm / 3.8 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 57% | 🍃 comfortable |
| Dew point | 18°C / 65°F | |
| Sunshine | 11 h/day | |
| Daylight | 12.6 h | |
| Wind | 9 km/h / 6 mph | |
| Air quality (US AQI) | 113 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Chiang Rai in April — FAQ
- Is April a good time to visit Chiang Rai?
- April in Chiang Rai: sweltering, rainy, with poor air quality — fine if you can take poor air. It ranks #7 of 12 months for Chiang Rai on SeasonMap's comfort score (67/100).
- What is the weather like in Chiang Rai in April?
- In April, Chiang Rai averages a daily high of 34.6°C and a low of 22.7°C, with about 97.6 mm of rain over roughly 9.2 rainy days.
- What is the air quality in Chiang Rai in April?
- Chiang Rai has a mean US Air Quality Index of about 113 in April.