Thailand (Phuket) · September
Low seasonThailand · Asia
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 32° (90°)29– (84–)34 (93) | 33° (91°)30– (86–)35 (95) | 34° (93°)32– (90–)36 (97) | 33° (91°)30– (86–)35 (95) | 32° (90°)28– (82–)34 (93) | 32° (90°)28– (82–)33 (91) | 32° (90°)28– (82–)33 (91) | 31° (88°)27– (81–)33 (91) | 31° (88°)27– (81–)33 (91) | 31° (88°)27– (81–)33 (91) | 32° (90°)27– (81–)33 (91) | 32° (90°)28– (82–)33 (91) |
Ø night, range from coldest to warmest nightØ nightrange | 24° (75°)21– (70–)26 (79) | 24° (75°)22– (72–)26 (79) | 25° (77°)22– (72–)27 (81) | 26° (79°)23– (73–)27 (81) | 26° (79°)24– (75–)28 (82) | 26° (79°)23– (73–)28 (82) | 26° (79°)23– (73–)28 (82) | 26° (79°)23– (73–)28 (82) | 25° (77°)23– (73–)27 (81) | 25° (77°)23– (73–)26 (79) | 25° (77°)23– (73–)26 (79) | 25° (77°)22– (72–)26 (79) |
☀️Sunshine | 9h | 10h | 10h | 9h | 7h | 7h | 7h | 7h | 6h | 6h | 6h | 8h |
🌊Water Temp | 29° (84°) | 30° (86°) | 31° (88°) | 32° (90°) | 31° (88°) | 30° (86°) | 30° (86°) | 30° (86°) | 30° (86°) | 30° (86°) | 30° (86°) | 29° (84°) |
🌧Rain Days | 5d79mm (3.1") | 3d40mm (1.6") | 6d102mm (4.0") | 9d141mm (5.5") | 16d324mm (12.7") | 14d355mm (14.0") | 14d269mm (10.6") | 16d405mm (16.0") | 17d417mm (16.4") | 17d372mm (14.7") | 14d222mm (8.7") | 7d90mm (3.5") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Off-season — lowest travel prices with still acceptable climate.
September in Thailand (Phuket) offers acceptable conditions — but it's not among the top travel months. Those looking for ideal weather should visit in January, February, March, and December.
Daytime highs average 31°C (88°F), cooling to 25°C (77°F) at night (daily average: 28°C (82°F)). Peaks reach around 33°C (91°F), the coldest nights around 23°C (73°F). With 6 sunshine hours per day and 17 rain days (417 mm (16.4 in)), this is one of the cloudier months. The water is a warm 30°C (86°F) — perfect for snorkelling and swimming.
An umbrella or waterproof jacket is essential. On rainy days, plan indoor activities like museums and markets.
Monsoon season: the Similan Islands close and the sea on the west coast gets rougher. In return, surfers arrive for the waves at Kata Noi and Kalim Beach, prices drop noticeably, and the lush green vegetation shows Phuket's tropical side. Songkran in April cools the whole island down.
Packing list for Thailand (Phuket) in September
- Light summer clothes
- Swimwear and beach towel
- Sunscreen
- Sunglasses
- Rain jacket and waterproof shoes
- Insect repellent
- Travel first-aid kit
Frequently Asked Questions
- Is September a good time to visit Thailand (Phuket)?
- September is not an optimal month for Thailand (Phuket) (Score: 50/100), but it is manageable. For better conditions, consider January, February, March, and December.
- How warm is it in Thailand (Phuket) in September?
- In September, Thailand (Phuket) sees daily highs of 31°C (88°F). Nights cool to 25°C (77°F), with a daily average of 28°C (82°F). Peaks reach around 33°C (91°F), the coldest nights around 23°C (73°F).
- How much rain falls in Thailand (Phuket) in September?
- In September, Thailand (Phuket) receives an average of 417 mm (16.4 in) of rain over 17 rain days. With frequent rain days, waterproof clothing is recommended.
- How many sunshine hours does Thailand (Phuket) get in September?
- Thailand (Phuket) averages 6 sunshine hours per day in September — below the annual average.
- How warm is the water in Thailand (Phuket) in September?
- Water temperature in Thailand (Phuket) in September averages 30°C (86°F) — ideal for swimming and snorkelling.
