Discover Kok Kood: a hidden gem in Thailand
Discover the hidden gem of Thailand - Koh Kood! Explore stunning beaches, waterfalls and eco-friendly resorts while enjoying a peaceful atmosphere away from the crowds.
Koh Samui Weather by Month: Temperature & Rainfall Guide
Koh Samui is a region in Thailand. Many people wonder what the weather conditions are in Koh Samui over the year. What is the best time to visit Koh Samui?
This page shows the average weather conditions by month in Koh Samui over the year in: January, February, March, April, May, June, July, August, September, October, November, December.
Koh Samui in January
In January the weather in Koh Samui is generally excellent. The temperatures range from high in Chaweng Beach with 28°C (82°F) to very high in Suratthani with 31°C (88°F).
Find more detailed climate information for Koh Samui in January here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in February
In February the weather in Koh Samui is generally excellent. The temperatures range from high in Chaweng Beach with 29°C (84°F) to very high in Suratthani with 33°C (91°F).
Find more detailed climate information for Koh Samui in February here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in March
In March the weather in Koh Samui is generally very good. The temperatures range from high in Chaweng Beach with 30°C (86°F) to very high in Suratthani with 34°C (93°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.
Find more detailed climate information for Koh Samui in March here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in April
In April the weather in Koh Samui is generally good. The average maximum daytime temperatures are very high and range from 30°C (86°F) in Chaweng Beach to 35°C (95°F) in Suratthani. These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.
Find more detailed climate information for Koh Samui in April here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in May
In May the weather in Koh Samui is generally good. The average maximum daytime temperatures are very high and range from 31°C (88°F) in Chaweng Beach to 34°C (93°F) in Suratthani. These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.
Find more detailed climate information for Koh Samui in May here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in June
In June the weather in Koh Samui ranges from good in Chaweng Beach to very good in Lamai Beach. The average maximum daytime temperatures are very high and range from 31°C (88°F) in Chaweng Beach to 33°C (91°F) in Suratthani. These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.
Find more detailed climate information for Koh Samui in June here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in July
In July the weather in Koh Samui ranges from good in Bophut to very good in Chaweng Beach. The average maximum daytime temperatures are very high and range from 30°C (86°F) in Chaweng Beach to 33°C (91°F) in Suratthani. These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.
Find more detailed climate information for Koh Samui in July here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in August
In August the weather in Koh Samui ranges from good in Chaweng Beach to very good in Lamai Beach. The average maximum daytime temperatures are very high and range from 30°C (86°F) in Bophut to 33°C (91°F) in Suratthani. These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.
Find more detailed climate information for Koh Samui in August here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in September
In September the weather in Koh Samui is generally good. The temperatures range from high in Chaweng Beach with 30°C (86°F) to very high in Suratthani with 32°C (90°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.
Find more detailed climate information for Koh Samui in September here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in October
In October the weather in Koh Samui is generally less favorable. The temperatures range from high in Bophut with 29°C (84°F) to very high in Suratthani with 31°C (88°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.
Find more detailed climate information for Koh Samui in October here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in November
In November the weather in Koh Samui is generally less favorable. In Chaweng Beach you can expect warm maximum average daytime temperatures around 29°C (84°F) and nighttime temperatures around 26°C (79°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.
Find more detailed climate information for Koh Samui in November here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Koh Samui in December
In December the weather in Koh Samui is generally very good. In Chaweng Beach you can expect warm maximum average daytime temperatures around 29°C (84°F) and nighttime temperatures around 26°C (79°F).
Find more detailed climate information for Koh Samui in December here.
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
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More climate information for the top 5 destinations in Koh Samui:
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