Phuket Weather in September
In Phuket, September brings high daytime temperatures around 29°C (84°F), with nights cooling to 26°C (79°F). It is the wettest month of the year, so expect more rainfall than usual.
Rainfall in Phuket in September
Phuket is in the rainy season in September, with rain on around 23 days and an average of 318 mm (13 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Phuket in September
In September, Phuket sees high temperatures, with highs of 29°C (84°F). Nights drop to around 26°C (79°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 26°C (79°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.
Sunshine in Phuket in September
The city usually sees around 100 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).
Wind Speed in Phuket in September
Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.
Average water temperature in September
The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.September in Phuket has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Phuket's climate page.
Phuket Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Water Temperature
28°C (82°F)
Chance of Rain
76%
Precipitation
318 mm (13 in)
Rainy days
23 days
Humidity
82%
Windspeed
3 m/s (6 knots)
Sunshine
100 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Phuket typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Phuket in September
Browse day-by-day weather records for Phuket spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Phuket historical weather extremes in September
Based on 49 years of weather observations in Phuket between 1976 and 2025, these are the recorded extremes.
- On September 1, 2010, temperatures climbed to 39°C (102°F), marking the warmest September day on record.
- On September 4, 1994, Phuket saw its coldest September day with temperatures maxing out at 25°C (77°F).
- The lowest overnight temperature recorded in September was 20°C (68°F) (September 23, 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
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tolerable
unpleasant
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What to Wear in Phuket 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. With water temperatures around 28°C (82°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Phuket in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Phuket's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Phuket climate overview or explore weather in Thailand.
