Average temperatures, rainfall and packing tips for Bangkok, Thailand in December
December in Bangkok is typically very hot, with average daytime highs around 33°C and nights near 24°C. Temperature-wise it sits mid-range for Bangkok (the 8th warmest month).
Rainfall is light in December: roughly 9 mm across the whole month.
If your dates are flexible, the most comfortable months in Bangkok are usually July, August and September.
← Bangkok weather tomorrow (live)
In December, Bangkok averages a daytime high of about 33°C and a night-time low of around 24°C, based on recent historical data.
Rainfall is light in December: roughly 9 mm across the whole month.
December is seriously hot in Bangkok. It's still doable - plan outdoor activities for early morning or evening, and build in shade and hydration breaks around midday. If your dates are flexible, the most comfortable months in Bangkok are usually July, August and September.