Month guide · Koh Phangan · Thailand
Koh Phangan in September
What September is really like in Koh Phangan: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: joestump https://www.flickr.com/photos/joestump/, CC BY 2.0
Quick answer
September is a good-value shoulder-season month. Expect average highs of 32°C (90°F), lows of 25°C (77°F), about 15 rainy days and roughly 12.2 hours of daylight. Increasing showers and quieter islands; good value with some sunny days.
Key facts
- Average high / low
- 32°C (90°F) / 25°C (77°F)
- Rainy days
- About 15
- Daylight
- About 12.2 hours
- Sea temperature
- 29°C (84°F)
- Crowds
- Quiet
- Hotel prices
- Low
Weather in September
September is the 6th-warmest month in Koh Phangan: days average 32°C (90°F) against a yearly average high of 31°C (88°F), and nights fall to about 25°C (77°F). Rain falls on roughly 15 of its 30 days. Compared with August (32°C (90°F)), September is about as warm; by October highs stay near 31°C (88°F).
- Sunrise (15 September)
- About 06:10
- Sunset (15 September)
- About 18:20
- Daylight
- About 12.2 hours
- Sea
- 29°C (84°F)
Summer (July–September). Mostly fine weather with short showers, busy with summer holidaymakers, while the Andaman coast is in monsoon.
Crowds and prices
On a 1–5 scale, September rates 2 for crowds (the peak is February at 5) and 2 for hotel prices (highest in February). That makes September one of the better-value months to book.
Events in September
September has no major recurring festival in Koh Phangan, which usually means easier bookings.
What to do in September
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Beach · Haad Yao and Haad Salad
Haad Yao
Stay for sunset, then eat at the beachfront restaurants before heading back.
- Time needed
- Half a day
- Cost
- Free
- Free
- Outdoors
- Couples
- Kids
Beach · Haad Yao and Haad Salad
Haad Salad
A small, sheltered cove on the north-west coast with soft sand, calm water and a reef offshore for snorkelling.
- Time needed
- Half a day
- Cost
- Free
- Free
- Outdoors
- Kids
Beach · Haad Yao and Haad Salad
Haad Son (Secret Beach)
Arrive in the late afternoon, swim, and stay to watch the sunset from the rocks.
- Time needed
- 2–3 hours
- Cost
- Free
- Free
- Couples
- Outdoors
Market · Thong Sala
Thong Sala Walking Street
On Saturday evenings, a street in Thong Sala closes to traffic for a market of local food stalls, clothes, handicrafts and live music, drawing both islanders and visitors.
- Time needed
- 1–2 hours
- Cost
- Free
- Free
- Food
- After dark
- Shopping
The sea averages 29°C (84°F) — warm enough to swim. Best beaches near Koh Phangan.
What to pack
For highs near 32°C, lows near 25°C and 15 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; a compact umbrella and waterproof shoes — rain is frequent; comfortable walking shoes.
Is September a good time to visit Koh Phangan?
A good-value shoulder-season month. If your dates are flexible, February–April and July–August are better overall. Compare every month.
Koh Phangan in other months
Questions travellers ask
+Is September a good time to visit Koh Phangan?
It is a good-value shoulder-season month. Increasing showers and quieter islands; good value with some sunny days.
+How warm is Koh Phangan in September?
Average highs are around 32°C (90°F) and lows around 25°C (77°F).
+Does it rain a lot in Koh Phangan in September?
Expect rain on about 15 days of the month, so pack for wet weather.