Bangkok weather in December
Bangkok averages 31°C by day and 22°C at night in December and about 19 mm of rain in the month.
Day
31°C
Night
22°C
Sea
n/a
Rain
19 mm
Flight from London
11½h
What December feels like
December is hot in Bangkok: proper beach weather.
It is dry: only about 19 mm of rain in the month.
That is 22°C warmer than an average December day in London.
Of the 56 sun destinations we track, Bangkok is the #3 warmest in December.
Comparing places? See the best weather in Thailand in winter for every winter month, place by place.
Going to Bangkok in December?
Share the TikToks and Instagram Reels you've saved for Bangkok to Dream Trip. It finds the places, pins them on a map and builds your days around them.
Bangkok weather by month
December is highlighted. Compare with November and January, or see the full year in Bangkok.
Bangkok in December: quick answers
Is Bangkok hot in December?
December is hot in Bangkok: proper beach weather. Average highs are 31°C and lows 22°C.
Does it rain in Bangkok in December?
It is dry: only about 19 mm of rain in the month.
What is the warmest month in Bangkok?
April, at an average high of 34°C. The coolest is October at 31°C.
How long is the flight to Bangkok from the UK?
About 11½h direct from London, estimated from the 9,555 km distance. Check your airline for exact times.
Still choosing? See where is hot in December for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in December from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. Rain is the average monthly total. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
Planning Bangkok in December?
Save the restaurants, beaches and views you find on TikTok and Instagram for Bangkok straight to a map, then let Dream Trip turn them into a day-by-day plan.
