Bangkok weather in January
January in Bangkok: sweltering, dry, with poor air quality — one of the best months to visit.
#1 of 12 months in Bangkok · #175 of 604 destinations to visit in January · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Bangkok climate normals — January
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 22°C / 71°F | |
| Feels like (high) | 34°C / 93°F | |
| Rainfall | 7 mm / 0.3 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 63% | 💧 humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 10.3 h/day | |
| Daylight | 11.4 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 154 | ⚠️ unhealthy |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Bangkok in January — FAQ
- Is January a good time to visit Bangkok?
- January in Bangkok: sweltering, dry, with poor air quality — one of the best months to visit. It ranks #1 of 12 months for Bangkok on SeasonMap's comfort score (79/100).
- What is the weather like in Bangkok in January?
- In January, Bangkok averages a daily high of 31.2°C and a low of 21.6°C, with about 6.6 mm of rain over roughly 1.4 rainy days.
- What is the air quality in Bangkok in January?
- Bangkok has a mean US Air Quality Index of about 154 in January.