Phuket
Thailand
Long-term weather forecast
Long-term weather forecast

May 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
A steady high temperature in the range of 77°F (25°C) and 89.6°F (32°C) introduces the hot weather in May. Days remain hot with eight hours of sunshine on average, consequently heating the sea to 86°F (30°C).
Rainfall, however, increases with up to eighteen rainy days in May and moderately high precipitation of 8.1" (205.7mm). While umbrellas are necessary, the rains help cool down the heat which is extremely high. Swimming in the warm 86°F (30°C) waters goes on till late.
Consider taking a boat ride to Phang Nga Bay in the North East part of Phuket, and enjoy shade from the towering cliffs and swimming in the beautiful green waters.
  • The average high temperature in May: 32.8°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).

  • The average low temperature in May: 25.6°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).

  • The average humidity in May: 79%

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

  • The average rainfall in May: 259.5mm

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

  • The average rainfall days in May: 21 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).

  • The average sea temperature in May: 30°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).

  • The average daylight in May: 12h

Months with the longest days are June and July (Average daylight: 13h).
Months with shortest days are January, February, March, April, May, August, September, October, November and December (Average daylight: 12h).

  • The average sunshine in May: 6.1h

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

  • The average UV index in May: 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).

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