Ko Pha-Ngan Weather in December
What's the weather like in Ko Pha-Ngan (Surat Thani) in December 2025?
The climate in Ko Pha-Ngan during December can be summarized as hot, humid and wet.
December is in the winter in Ko Pha-Ngan 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 Pha-Ngan 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 Pha-Ngan
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 Pha-Ngan in December 2025.
Other monthly averages
Best places to visit in December
Ko Pha-Ngan 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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