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Chaweng Beach, Ko Samui, Thailand. Author Jacques Herremans. Licensed under the Creative Commons Attribution-Share Alike
Chaweng Beach, Ko Samui, Thailand. Author Jacques Herremans

Ko Samui climate: when to go to Ko Samui

Ko Samui is an island located in the Gulf of Siam, in the south-eastern part of Thailand at about 9 degrees north of the equator. The island has a tropical monsoon climate, characterized by stable temperatures in all seasons with variations of a few degrees between the coldest and the warmest, and that can be divided into a rainy season and a dry season.

The short dry season runs from February to April, while the wettest months are between October and December, during the rest of the year rains fall every day, but only for a few tens of minutes, on average, on the island falling almost 2,000 mm of rain per year.

The climate is hot and humid, the average maximum temperatures vary between 29°C and 32°C, while the average minimum temperatures vary between 24°C and 26°C.

The temperature of the sea water is excellent for swimming all year round.

Ko Samui, Thailand. Author Vitautas777. No Copyright

Ko Samui, Thailand. Author Vitautas777

WHEN TO GO TO KO SAMUI

The best time for a trip to Ko Samui are the driest months between February and April, but the months between January and September are also good, considering that at this time it rains usually only for a few tens of minutes each day.

Ko Samui

Ang Thong National Park

KO SAMUI CLIMATIC TABLES

Ko Samui

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Rain (mm)

138

58

78

76

142

112

122

118

117

290

490

209

1950

Min Temp (°C)

24

25

25

26

26

25

25

25

25

24

24

24

Max Temp (°C)

29

29

31

32

32

32

32

32

31

30

29

29

Ko Samui

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sea water temperatures (°C)

28

29

29

30

30

30

29

29

29

29

29

28

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