Koh Samui weather in December 2024

Expect 29°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Koh Samui in December. Check more long-term weather averages for Koh Samui in December before you book your next holiday to Thailand in 2024/2025.

29
29°C max day temperature
6
6 hours of sunshine per day
13
13 days with some rainfall
22
22°C min night temperature
12
12 hours of daylight per day
H
High heat & humidity
188
188 mm of monthly rainfall
10
10 (Very High) UV index
28
28°C sea temperature

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The December weather guide for Thailand (Koh Samui) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

More about Thailand

How hot is it in Koh Samui in December?

Daytime temperatures usually reach 29°C in Koh Samui in December with high heat and humidity, falling to 22°C at night.

How sunny is it in Koh Samui in December?

There are normally 6 hours of bright sunshine each day in Koh Samui in December - that's 54% of daylight hours.

How warm is the sea around Koh Samui in December?

The average sea temperature around Koh Samui in December is 28°C.

Does it rain in Koh Samui in December?

There are usually 13 days with some rain in Koh Samui in December and the average monthly rainfall is 188mm.

What is the chance of a typhoon in Koh Samui in December?

On average less than 1 day in December in Koh Samui is likely to be affected by the passage of one or more tropical storms.

Koh Samui December sunrise & sunset times

Browse the sunrise and sunset times for Koh Samui in December 2024. Select a month to view Koh Samui sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Sunday, 1st December 2024	06:21	17:57
Monday, 16th December 2024	06:28	18:03
Tuesday, 31st December 2024	06:35	18:10

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Thailand - quick facts
Flight time^✝	15 hours
Time difference	UK +7 hours
Language(s)	Thai, Isan
Currency	Thai Baht
Electricity	A + B + C + O plug (230V)
Driving side	Left
Why visit?	Beaches Culture Nature Nightlife
Tourist info	Tourism Authority of Thailand