☀️ Yes! Average temperature: 31°C
Yes, absolutely! With temperatures averaging 31°C, it's hot and perfect for beach holidays. Koh Samui in May has an average air temperature of 31°C with sea temperatures around 29°C. You can expect 7 hours of sunshine per day and 150mm of rainfall, which means heavy rainfall — pack waterproofs.
At 29°C the sea is like a warm bath — perfect for swimming, snorkelling, and diving. With 7 hours of daily sunshine, there's plenty of time to enjoy outdoor activities. Pack light clothing, high-SPF sunscreen, a wide-brimmed hat, and swimwear. Stay hydrated.
Koh Samui is one of the top warm destinations for May 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 May:
| Destination | Air °C | Sea °C | Rain | Sun |
|---|---|---|---|---|
| Koh Samui | 31°C | 29°C | 150mm | 7h |
| Krabi | 31°C | 29°C | 280mm | 6h |
| Langkawi | 31°C | 29°C | 210mm | 6h |
| Maldives | 31°C | 29°C | 175mm | 7h |
| Phuket | 31°C | 29°C | 260mm | 6h |
| Tulum | 31°C | 28°C | 70mm | 8h |
See how Koh Samui's temperature changes throughout the year:
Looking for somewhere warm in May? These destinations are all 25°C+:
Yes, Koh Samui in May has average temperatures of 31°C, making it a warm destination. Sea temperatures are 29°C.
Yes, the sea temperature of 29°C is very comfortable for swimming.
Pack light clothing, high-SPF sunscreen, a wide-brimmed hat, and swimwear. Stay hydrated.
May is an excellent time to visit Koh Samui with warm weather and 7 hours of daily sunshine.
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