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Best time to visit Koh Phangan: month by month
Short answer
January to April is the driest and calmest period, with highs of about 25–27°C and 10–18 rainy days a month, usually short showers. May to September is often fine too, with sunny spells between showers. October to December is the wettest season, with 26–28 rainy days in October and November, and storms can disrupt ferries.
Month by month
| Month | High | Low | Rainy days | Crowds |
|---|---|---|---|---|
| Jan | 25°C | 22°C | 10 | very high |
| Feb | 25°C | 23°C | 15 | high |
| Mar | 26°C | 23°C | 12 | high |
| Apr | 27°C | 24°C | 18 | high |
| May | 27°C | 24°C | 22 | medium |
| Jun | 27°C | 24°C | 21 | medium |
| Jul | 27°C | 24°C | 21 | high |
| Aug | 27°C | 24°C | 18 | high |
| Sep | 26°C | 23°C | 24 | medium |
| Oct | 26°C | 23°C | 28 | low |
| Nov | 25°C | 22°C | 26 | low |
| Dec | 25°C | 23°C | 15 | high |
Temperatures and rainy days: Copernicus ERA5 averages, 2021–2023. Crowd levels are our estimate.
Season by season
Spring (Mar–May)
Highs of about 26–27°C and lows of 23–24°C; March is relatively dry with about 12 rainy days, rising to about 22 in May; hot and sunny for beaches.
Summer (Jun–Aug)
Highs of about 27°C and lows around 24°C, with 18–21 rainy days a month, often short showers; good sea conditions and fewer crowds than winter.
Autumn (Sep–Nov)
Highs of about 25–26°C with 24–28 rainy days a month; the wettest period, with rough seas possible from October and some trips cancelled.
Winter (Dec–Feb)
Highs of about 25°C and lows of 22–23°C; December is still wet early in the month, while January has the fewest rainy days (about 10). Peak season.
Events worth planning around
- Full Moon Party on Haad Rin's Sunrise Beach — every month around the full moon (dates shift around Buddhist holidays)
- Songkran, Thai New Year water festival — 13–15 April
- Loy Krathong — usually November, on the full moon of the twelfth Thai lunar month
- New Year's Eve parties at Haad Rin — 31 December
When to avoid
Avoid October and November if you want reliable beach weather and calm seas, as these are the wettest months. Avoid Full Moon week around Haad Rin if you want quiet or low room prices.
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Common questions
What is the best time to visit Koh Phangan?
January to April, the driest and calmest period, with highs of about 25–27°C.
When is the rainy season on Koh Phangan?
October to December is the wettest, with up to 28 rainy days a month and possible ferry disruption.
When is the Full Moon Party?
Every month around the full moon on Haad Rin's Sunrise Beach. Check the official schedule, as dates shift.