Chiang Rai weather in December
December in Chiang Rai: warm, dry — one of the best months to visit.
#2 of 12 months in Chiang Rai · #69 of 897 destinations to visit in December · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Chiang Rai in December
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Chiang Rai climate normals — December
| Daytime high | 26°C / 79°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 60°F | |
| Rainfall | 15 mm / 0.6 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 75% | 💧 humid |
| Dew point | 17°C / 63°F | |
| Sunshine | 9.7 h/day | |
| Daylight | 10.9 h | |
| Wind | 7 km/h / 4 mph | |
| Air quality (US AQI) | 55 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Chiang Rai in December — FAQ
- Is December a good time to visit Chiang Rai?
- December in Chiang Rai: warm, dry — one of the best months to visit. It ranks #2 of 12 months for Chiang Rai on SeasonMap's comfort score (89/100).
- What is the weather like in Chiang Rai in December?
- In December, Chiang Rai averages a daily high of 26.2°C and a low of 15.7°C, with about 15.1 mm of rain over roughly 3.4 rainy days.
- What is the air quality in Chiang Rai in December?
- Chiang Rai has a mean US Air Quality Index of about 55 in December.