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Although the climate varies throughout Thailand, you can visit all year round. The best time to travel is during the cool and dry season between November and early April. In the south, the climate differs between the eastern and western coasts. The west coast is more favorable during the winter months, when diving and snorkeling will be at its best. The weather on the east coast is good for most of the year, with the lowest rainfall in January and February and the highest in November.

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Thailand is another country with a distinct east versus west climate. The pick for us is either November, for the beautiful west coast beaches, or June, for beating the crowds and enjoying some of the country's cultural highlights with great weather.

Hannah, Southeast Asia Specialist

Thailand Climate Guide

Destination Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ayutthaya 90°F 0" 93°F 1" 97°F 1" 97°F 3" 95°F 6" 93°F 7" 91°F 7" 90°F 7" 90°F 11" 90°F 7" 88°F 2" 88°F 0"
Bangkok 90°F 0" 91°F 1" 93°F 1" 95°F 3" 93°F 7" 91°F 6" 91°F 6" 90°F 8" 90°F 13" 90°F 9" 88°F 2" 88°F 0"
Chiang Mai 82°F 0" 88°F 0" 93°F 1" 95°F 2" 91°F 6" 88°F 4" 86°F 6" 86°F 7" 86°F 8" 84°F 6" 84°F 1" 82°F 1"
Khao Lak 88°F 1" 91°F 1" 91°F 3" 91°F 7" 90°F 15" 88°F 18" 86°F 18" 86°F 18" 86°F 22" 86°F 14" 86°F 7" 86°F 2"
Koh Samet 91°F 1" 91°F 2" 91°F 2" 93°F 4" 91°F 8" 90°F 8" 90°F 8" 90°F 8" 88°F 11" 90°F 9" 90°F 3" 90°F 0"
Koh Samui 84°F 7" 88°F 2" 91°F 3" 93°F 2" 91°F 5" 91°F 3" 90°F 5" 90°F 4" 90°F 5" 88°F 11" 84°F 18" 84°F 10"
Krabi 88°F 1" 91°F 1" 93°F 2" 93°F 6" 90°F 7" 90°F 10" 90°F 9" 88°F 9" 88°F 13" 88°F 10" 86°F 8" 86°F 3"
Phuket 88°F 2" 90°F 1" 91°F 2" 91°F 6" 90°F 13" 88°F 11" 88°F 11" 88°F 11" 86°F 15" 86°F 13" 86°F 7" 88°F 3"
Udon Thani 84°F 0" 88°F 1" 93°F 2" 95°F 3" 91°F 9" 90°F 10" 90°F 10" 88°F 12" 88°F 11" 88°F 3" 86°F 0" 84°F 0"

Month-by-month guide to traveling in Thailand

Koh Samui, Thailand

Visiting Thailand in July

Temperatures start to drop a little as wind and rain becomes more common towards the end of the month. The sun is still out on the east coast beaches, but islands such as Koh Samui tend to get busy over the school vacations. The beginning of the month is best.

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Trip ideas and travel guides to exploring Thailand

Trip ideas for exploring Thailand