Bangkok Weather in January
Thailand · Tropical Savanna climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
January in Bangkok sees average temperatures ranging from a low of 22.3°C (72.1°F) to a high of 31.9°C (89.4°F), with a mean of 26.9°C (80.4°F). Compared to the annual average of 28.1°C (82.6°F), this month is 1.2°C cooler than the yearly norm. Precipitation averages 14.3mm, making it approximately 127.0mm drier than the monthly average of 141.0mm. This is the driest month of the year, with just 14.3mm of precipitation. The city receives an average of 10.7 hours of sunshine per day during January, with relative humidity averaging 63.8%. Wind speeds reach an average maximum of 13.2 km/h. For travelers, this month offers a temperature experience in Bangkok, with drier-than-average conditions compared to the rest of the year.
Bangkok taught me that 'too hot' is a real concept. I arrived in April thinking I could handle it — 36°C with 70% humidity is genuinely dangerous if you're not acclimated. Pack moisture-wicking everything, plan indoor activities for 11am-3pm, and embrace the night markets. November-February is the survival window. The data backs this up: those months drop to a manageable 30°C with lower humidity and almost no rain.
January vs Adjacent Months
| Metric | December | January | February |
|---|---|---|---|
| Mean Temp | 26.6°C (79.9°F) | 26.9°C (80.4°F) | 27.8°C (82.0°F) |
| Rainfall | 15.4mm | 14.3mm | 44.2mm |
| Sunshine | 10.4 hrs | 10.7 hrs | 10.6 hrs |
| Humidity | 62.6% | 63.8% | 69.3% |
| Wind | 12.6 km/h | 13.2 km/h | 15.3 km/h |
| Rainy Days | 8.2 | 7.0 | 12.6 |
Seasonal Context
January falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Bangkok in January, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Bangkok in January?
The average temperature in Bangkok during January ranges from 22.3°C (72.1°F) to 31.9°C (89.4°F), with a mean of 26.9°C (80.4°F).
How much does it rain in Bangkok in January?
Bangkok receives an average of 14.3mm of precipitation in January, spread across approximately 7.0 rainy days. This is the driest month of the year.
What should I pack for Bangkok in January?
Based on January weather data, pack lightweight, breathable clothing, sunscreen, and a hat.
Is January a good time to visit Bangkok?
January is a good time to visit Bangkok, with comfortable temperatures and manageable rainfall.
Other Months for Bangkok
Cities with Similar January Climate (Tropical Savanna)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 13.76°, 100.5°. Timezone: Asia/Bangkok. Last updated: 2026-07-30.