Ko Samui Weather in December
What's the weather like in Ko Samui (Surat Thani) in December 2024?
The climate in Ko Samui during December can be summarized as hot, humid and wet.
December is in the winter in Ko Samui and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a steamy 29°C (83°F), whilst at night 22°C (72°F) is normal.
| Daytime temperature | 28.5°C 83.3°F |
|---|---|
| Nightly temperature | 22.3°C 72.1°F |
| Average temperature | 25.4°C 77.7°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 188 mm 7.4 ins |
| Rainy days | 13 days |
| Sea temperature | 28.3°C 83°F |
| Humidity | 80% |
| Windspeed | 9.4kph 6 mph |
On average December is the 3rd wettest month of the year in Ko Samui with around 188mm 7.4 inches of rain making it a wet time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
December temperatures in Ko Samui
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Ko Samui in December 2024.
Other monthly averages
Best places to visit in December
Ko Samui weather stats
| Hottest month: | April | 31.6°C 88.9°F |
|---|---|---|
| Driest month: | February | 39mm 1.5ins |
| Sunniest month: | February | 8.7hrs |
| Coldest month: | January | 28.4°C 83.1°F |
| Wettest month: | November | 463mm 18.2ins |
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