Phuket weather in September
Phuket averages 29°C by day and 25°C at night in September, with the sea at 30°C and about 243 mm of rain in the month.
Day
29°C
Night
25°C
Sea
30°C
Rain
243 mm
Flight from London
12h
What September feels like
September is hot but wet in Phuket: rainy season, so pack for showers.
The sea is warm at 30°C: comfortable for long swims.
It is rainy season: about 243 mm of rain falls in the month.
That is 9°C warmer than an average September day in London.
Of the 56 sun destinations we track, Phuket is the #30 warmest in September.
Going to Phuket in September?
Share the TikToks and Instagram Reels you've saved for Phuket to Dream Trip. It finds the places, pins them on a map and builds your days around them.
Want it warmer in September?
These are hotter than Phuket this month for at most an hour and a half more flying:
Phuket weather by month
September is highlighted. Compare with August and October, or see the full year in Phuket.
| Month | Day | Night | Sea | Rain |
|---|---|---|---|---|
| January | 30°C | 25°C | 29°C | 78 mm |
| February | 32°C | 25°C | 30°C | 33 mm |
| March | 32°C | 26°C | 30°C | 63 mm |
| April | 32°C | 26°C | 31°C | 116 mm |
| May | 31°C | 26°C | 31°C | 230 mm |
| June | 30°C | 26°C | 31°C | 195 mm |
| July | 30°C | 25°C | 30°C | 180 mm |
| August | 29°C | 25°C | 30°C | 206 mm |
| September | 29°C | 25°C | 30°C | 243 mm |
| October | 29°C | 25°C | 30°C | 289 mm |
| November | 29°C | 25°C | 30°C | 246 mm |
| December | 29°C | 24°C | 29°C | 139 mm |
Phuket in September: quick answers
Is Phuket hot in September?
September is hot but wet in Phuket: rainy season, so pack for showers. Average highs are 29°C and lows 25°C.
Can you swim in Phuket in September?
The sea is warm at 30°C: comfortable for long swims.
Does it rain in Phuket in September?
It is rainy season: about 243 mm of rain falls in the month.
What is the warmest month in Phuket?
March, at an average high of 32°C. The coolest is September at 29°C.
How long is the flight to Phuket from the UK?
About 12h direct from London, estimated from the 9,929 km distance. Check your airline for exact times.
Still choosing? See where is hot in September for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in September from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. Rain is the average monthly total. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
Planning Phuket in September?
Save the restaurants, beaches and views you find on TikTok and Instagram for Phuket straight to a map, then let Dream Trip turn them into a day-by-day plan.
