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Koh Samui weather in May

Planning a getaway to Koh Samui this May and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What is the weather like in Koh Samui in May?

Koh Samui is a region in Thailand. May in Koh Samui generally has very warm temperatures, with precipitation levels ranging from high to heavy.

The average maximum temperatures are very warm and range from 31°C in Chaweng Beach to 34°C in Suratthani. Nighttime temperatures generally drop to 26°C in Suratthani and 28°C in Chaweng Beach. The temperatures mentioned for daytime and nighttime are general averages. However there can be days that surpass these temperatures. So equip yourself with clothing that can handle the potential heat.

In May, precipitation varies across different areas. From high rainfall in Laem Set Beach with an average of 119 mm to heavy rainfall in Suratthani with 165 mm. Meanwhile, Chaweng Beach enjoys close to 193 hours of sunlight. This means it's a great month if you prefer bright and sunny days.

To learn more about the conditions in specific areas of Koh Samui in May, check out the map below. For more details on the yearly weather, visit our Koh Samui climate page.

Where to go in Koh Samui in May

Find the average weather conditions in May for the most popular destinations in Koh Samui on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Koh Samui

What is the weather like in May for the 5 most popular destinations in Koh Samui?

Average weather in Chaweng Beach

In May Chaweng Beach generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 28°C and high monthly rainfall. So on average the conditions are tolerable that month.

Chaweng Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
30°C 
28°C 
201 hours 
109 mm 
8 days 
31°C 
28°C 
193 hours 
131 mm 
17 days 
June   >> June
>>  
31°C 
27°C 
151 hours 
106 mm 
16 days 
Climate in Chaweng Beach

Average weather in Lamai Beach

In May Lamai Beach generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 28°C and high monthly rainfall. So on average the conditions are tolerable that month.

Lamai Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
30°C 
28°C 
201 hours 
109 mm 
8 days 
31°C 
28°C 
193 hours 
124 mm 
17 days 
June   >> June
>>  
31°C 
27°C 
151 hours 
99 mm 
16 days 
Climate in Lamai Beach

Average weather in Bophut

In May Bophut generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 28°C and high monthly rainfall. So on average the conditions are tolerable that month.

Bophut
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
30°C 
28°C 
201 hours 
108 mm 
8 days 
31°C 
28°C 
193 hours 
134 mm 
17 days 
June   >> June
>>  
31°C 
27°C 
151 hours 
110 mm 
16 days 
Climate in Bophut

Average weather in Choeng Mon Beach

In May Choeng Mon Beach generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 28°C and high monthly rainfall. So on average the conditions are tolerable that month.

Choeng Mon Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
30°C 
28°C 
201 hours 
109 mm 
8 days 
31°C 
28°C 
193 hours 
137 mm 
17 days 
June   >> June
>>  
31°C 
27°C 
151 hours 
113 mm 
16 days 
Climate in Choeng Mon Beach

Average weather in Mae Nam Beach

In May Mae Nam Beach generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 28°C and high monthly rainfall. So on average the conditions are tolerable that month.

Mae Nam Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
30°C 
28°C 
201 hours 
108 mm 
8 days 
31°C 
28°C 
193 hours 
134 mm 
17 days 
June   >> June
>>  
31°C 
27°C 
151 hours 
110 mm 
16 days 
Climate in Mae Nam Beach

Is your destination not in the list? Have a look at other destinations in Koh Samui, in Thailand.

Is May the best time to visit Koh Samui?

In our opinion, May is a good time to visit Koh Samui with overall tolerable weather in Chaweng Beach.

On average, the best time to visit Koh Samui is in January and February with generally perfect weather in Chaweng Beach. On the other hand, the weather in October and November tend to be poor.

Interested in more climate information?

We have much more information about the climate in Koh Samui. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Thailand? Get detailed historical weather averages for many cities in Thailand.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.