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Ko Pha-ngan Weather in September
Ko Pha-ngan in September sees high daytime temperatures of 30°C (86°F) and nighttime lows of 27°C (81°F). As part of the rainy season, showers are frequent and often heavy. Budget around 198 mm (7.8 in) of rainfall for the month.
Rainfall in Ko Pha-ngan in September
Ko Pha-ngan is in the rainy season in September, with rain on around 17 days and an average of 198 mm (7.8 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Ko Pha-ngan in September
September in Ko Pha-ngan sees highs of 30°C (86°F) and lows of 27°C (81°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 27°C (81°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.
Sunshine in Ko Pha-ngan in September
The month brings about 146 hours of sunlight, offering a comfortable mix of sun and rainy moments.September in Ko Pha-ngan has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Ko Pha-ngan Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
58%
Precipitation
198 mm (7.8 in)
Rainy days
17 days
Humidity
80%
Sunshine
146 hours
Percentage Sunshine
Ko Pha-ngan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ko Pha-ngan - and find the best time to visit.
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Ko Pha-ngan typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Ko Pha-ngan in September
Browse day-by-day weather records for Ko Pha-ngan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ko Pha-ngan historical weather extremes in September
Based on 40 years of weather observations in Ko Pha-ngan between 1986 and 2026, these are the recorded extremes.
- On September 6, 2026, temperatures climbed to 36°C (97°F), marking the warmest September day on record.
- The coldest September day was on September 23, 1992, with a maximum of 26°C (79°F).
- The lowest overnight temperature recorded in September was 20°C (68°F) (September 25, 2012).
Best Places in Thailand in September
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Ko Pha-ngan in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Ko Pha-ngan in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Ko Pha-ngan 3-Day Forecast
More climate data for Ko Pha-ngan
Temperature Rainfall Sunshine Humidity
See the full Ko Pha-ngan climate overview or explore weather in Thailand.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bangkok
34°C (93°F) Chiang Mai33°C (91°F) Jomtien Beach32°C (90°F) Hua Hin32°C (90°F) Ao Nang Beach30°C (86°F) Koh Samui30°C (86°F) Ko Lanta30°C (86°F) Patong Beach29°C (84°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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