Thailand weather

Our guide to the weather in Thailand during December

31

Average high

7

UV Index

11mm

Monthly rainfall

28

Sea temperature

We've looked at the most up-to-date weather data for Thailand, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Thailand weather in December.

How hot is it in Thailand during December?

The temperature reaches around 31℃ during the daytime in December, falling away to 21℃ at night. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Thailand during December?

December is typically the driest month in Thailand. On average, in December you'll see rain on just one day in the month. In other words, you shouldn't see any of the wet stuff. You're not likely to see a thunderstorm during your trip.

Is it windy in Thailand during December?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in December. With moderate humidity, any breeze will have a welcome cooling effect.

How warm is the sea in Thailand during December?

The water around Thailand reaches a very pleasant 28℃ during December. This is very warm, and will feel bath-like. People who normally feel the cold will find this temperature perfectly acceptable. The hot air temperature will mean that you will feel comfortably warm when coming out of the water.

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Weather in Thailand

Our month-by-month guide to the weather and climate in Thailand

33.5

Thailand weather in

January
36.0

Thailand weather in

February
37.8

Thailand weather in

March
38.5

Thailand weather in

April
36.8

Thailand weather in

May
34.5

Thailand weather in

June
32.7

Thailand weather in

July
32.6

Thailand weather in

August
32.4

Thailand weather in

September
31.2

Thailand weather in

October
30.9

Thailand weather in

November
31.2

Thailand weather in

December