Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Phuket, Thailand

A close view of beautiful long tail boats on the white sandy shores of a beach in Phuket, Thailand
A close view of beautiful long tail boats on the white sandy shores of a beach in Phuket, Thailand
September is the coolest month in Phuket with moderately low temperatures in the range of 24°C (75.2°F) and 30°C (86°F). These are the lowest temperatures experienced in Phuket.
The highest rainfall of the year is received in September, too, with the highest average precipitation of 408.9mm (16.1") collected from21 days of rain. Wet days with up to seven hours or warm sunshine characterize most of September. Humidity in September shoots to 82%.
The sea temperature stays constant at 29°C (84.2°F), and swimming remains a perfect activity. However, there might be high tides and currents in the ocean, and visitors are advised to have guides.
  • Average high temperature in September: 31.5°C

The warmest month (with the highest average high temperature) is March (34°C).
Months with the lowest average high temperature are September and October (31.5°C).

  • Average low temperature in September: 24.6°C

The month with the highest average low temperature is April (25.8°C).
The coldest month (with the lowest average low temperature) is December (24.4°C).

  • Average humidity in September: 82%

Months with the highest relative humidity are September and October (82%).
The month with the lowest relative humidity is February (69%).

  • Average rainfall in September: 361.2mm

The wettest month (with the highest rainfall) is September (361.2mm).
The driest month (with the lowest rainfall) is February (23.9mm).

  • Average rainfall days in September: 23 days

The month with the highest number of rainy days is September (23 days).
The month with the lowest number of rainy days is February (3 days).

  • Average sea temperature in September: 29°C

Best months for swimming (with the highest average sea temperature) are April, May and June (30°C).
Coldest months (with the lowest average sea temperature) are January, February and December (28°C).

  • Average daylight in September: 12.9h

Months with the longest days are June and July (Average daylight: 13.3h).
The month with shortest days is December (Average daylight: 12.4h).

  • Average sunshine in September: 4.8h

The month with most sunshine is February (Average sunshine: 9.7h).
The month with least sunshine is June (Average sunshine: 4.7h).

  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).