Visiting Koh Tao in May 2026
Planning a trip to Koh Tao in May? Here's everything you need to know about the weather, crowds, festivals, and the best things to do during this month.
Weather
Hot and dry season with temperatures rising to 35-40°C. Humidity builds up toward May.
Crowds & Prices
Quieter than peak season except during Songkran (mid-April), which attracts massive domestic and international crowds.
Pros
- ✓ Lower hotel rates outside Songkran week
- ✓ Excellent diving visibility in Andaman Sea
- ✓ Songkran water festival experience
- ✓ Mango season — peak tropical fruit
Cons
- • Very hot for outdoor activities
- • Northern haze (March-April) from agricultural burning
- • Plan indoor breaks midday
Festivals in May
Visakha Bucha Day
May (Full Moon)
Buddhism's most sacred day celebrating Buddha's birth, enlightenment, and passing on a single full moon.
Bun Bang Fai (Rocket Festival)
May/June
Wild Isaan festival where homemade rockets are launched to encourage rain for the rice planting season.
Royal Ploughing Ceremony
May
Ancient Brahmin ceremony marking the rice planting season with royal oxen predicting the harvest.
Top Things to Do in Koh Tao in May
Koh Tao in May – FAQ
More May & Koh Tao Guides
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