
Thailand
Koh Samui in May
Cheapest flights to Koh Samui in May
- From Singapore$341Book
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Good-value Koh Samui hotels in May
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Koh Samui weather in May
33° / 26°
186 mm
26 / 30
20/100
Koh Samui in May ranks #8 of 12 months for comfort: highs around 33°C, lows 26°C, and about 26 rainy days. Compared with April, highs change by +1°C and rainy days by +15.
Compared with the months around it
| Month | High / Low | Rainy days | Index |
|---|---|---|---|
| April | 32° / 26° | 12 | 57 |
| May | 33° / 26° | 26 | 20 |
| June | 34° / 25° | 26 | 20 |
Top tours & tickets in Koh Samui
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Public holidays · May 2027
- 05/01National Labour Day
- 05/04Coronation Day
- 05/20Visakha Bucha Day









