☀️ Yes! Average temperature: 27°C
Yes! Average temperatures of 27°C make it pleasantly warm and ideal for sun-seekers. Koh Samui in December has an average air temperature of 27°C with sea temperatures around 27°C. You can expect 6 hours of sunshine per day and 170mm of rainfall, which means heavy rainfall — pack waterproofs.
At 27°C the sea is like a warm bath — perfect for swimming, snorkelling, and diving. With 6 hours of daily sunshine, there's plenty of time to enjoy outdoor activities. Bring summer clothes, sunscreen, sunglasses, and a light cardigan for air-conditioned venues.
Koh Samui is one of the top warm destinations for December holidays from the UK. The average flight time from the UK is comfortable and there are usually good deals available for this time of year.
Here's how Koh Samui stacks up against similar destinations in December:
| Destination | Air °C | Sea °C | Rain | Sun |
|---|---|---|---|---|
| Koh Samui | 27°C | 27°C | 170mm | 6h |
| Cancun | 27°C | 27°C | 50mm | 7h |
| Galapagos | 27°C | 23°C | 20mm | 7h |
| Tulum | 27°C | 27°C | 45mm | 7h |
| Turks & Caicos | 27°C | 27°C | 35mm | 7h |
| Antigua | 28°C | 27°C | 70mm | 8h |
See how Koh Samui's temperature changes throughout the year:
Looking for somewhere warm in December? These destinations are all 25°C+:
Yes, Koh Samui in December has average temperatures of 27°C, making it a warm destination. Sea temperatures are 27°C.
Yes, the sea temperature of 27°C is very comfortable for swimming.
Bring summer clothes, sunscreen, sunglasses, and a light cardigan for air-conditioned venues.
December is an excellent time to visit Koh Samui with warm weather and 6 hours of daily sunshine.
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