Koh Samui in may: average Weather, Temperature and Climate, Where to go?
Weather on the island of Koh Samui in may 2025
Below, you have access to the weather forecast for the month of may for most popular cities in Ko Samui. These datas are probabilities for may from weather reports for many years. The percentage indicates the possibility of having the weather indicated.
Average weather in may in Chaweng Beach
good weather UV index: 7
Weather at 6am
86°F
Clear/Sunny
36% of time
25%
25%
10%
Weather at 12pm
86°F
Clear/Sunny
49% of time
26%
18%
5%
Weather at 6pm
86°F
Clear/Sunny
37% of time
28%
21%
10%
Weather at 3am
86°F
32%
29%
27%
10%
Where to go on the island of Koh Samui in may?
Where to go on the island of Koh Samui in may: destination map
perfect weather
good
tolerable
bad
very bad
Where should you go on the island of Koh Samui in may when it comes to the weather?
Remember:
The climate on the island of Koh Samui in may is good across the board.
You are lucky: Although it is not perfect the weather in Ko Samui in may should be pretty good in Bophut, Koh Madsum, Lamai beach, Chaweng Beach, Lipa Noi, Maenam, Koh Taen and Koh Phaluai. I allows to enjoy sightseeing in these areas. And even why not take a little time to sunbathe!
If you do not go the sun and blue sky, but, for example to discover the heritage, the cities of Bang Kao (Laem Sor beach), Choeng Mon and Nathon have a decent enough weather for that in may.
Climate on the island of Koh Samui in may
Climate in Chaweng Beach in may
In may, the mean temperature in Chaweng Beach is 86°F (maximum temperature is 88°F and minimum temperature is 85°F). The climate is very hot here in this month. With 6.3in over 11 days, rainfall can happen for your holidays. But this is moderate and it will not be continuous.
With a good climate, the month of may is a good time to go in that area.
| May | |||
| Average temperature | 86°F | ||
| Highest temperature | 88°F | ||
| Lowest temperature | 85°F | ||
| Sea temperature | 87°F | ||
| Rainfall | 6.3in | ||
| Number of days with rainfall | 11 day(s) (34%) | ||
| Humidity | 76% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 31% | ||
| Length of day | 12:34 | ||
| Our opinion at whereandwhen.net | good |
Climate in Bang Kao (Laem Sor beach) in may
In the month of may, the mean temperature in Bang Kao (Laem Sor beach) is 86°F (maximum temperature is 88°F and minimum temperature is 85°F). The climate is burning in this city in may. With 6.3in over 11 days, rain may occur for your vacations. But this is pretty moderate and it is only of temporary showers.
With a correct weather, the month of may is okay (but not the best month) for traveling in this city.
| May | |||
| Average temperature | 86°F | ||
| Highest temperature | 88°F | ||
| Lowest temperature | 85°F | ||
| Sea temperature | 87°F | ||
| Rainfall | 6.3in | ||
| Number of days with rainfall | 11 day(s) (34%) | ||
| Humidity | 76% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 31% | ||
| Length of day | 12:33 | ||
| Our opinion at whereandwhen.net | good |
Climate in Bophut in may
In the month of may, maximum temperature is 88°F and minimum temperature is 85°F (for an average temperature of 86°F). The climate is very warm in this location in the month of may. With 6.3in over 11 days, rain may occur throughout your holidays. But this is moderate and it will not be continuous.
With good weather conditions, may is an advisable month to go in this city in Ko Samui.
| May | |||
| Average temperature | 86°F | ||
| Highest temperature | 88°F | ||
| Lowest temperature | 85°F | ||
| Sea temperature | 87°F | ||
| Rainfall | 6.3in | ||
| Number of days with rainfall | 11 day(s) (34%) | ||
| Humidity | 76% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 31% | ||
| Length of day | 12:33 | ||
| Our opinion at whereandwhen.net | good |
Climate in Choeng Mon in may
In the month of may, the mean temperature in Choeng Mon is 86°F (maximum temperature is 88°F and minimum temperature is 85°F). The climate is burning in that area in this month. With 6.3in over 11 days, you will experience some showers for your trip. But this is reasonably and it will not be continuous.
With a correct climate, the month of may is okay (but not the best time) for traveling in this locality.
| May | |||
| Average temperature | 86°F | ||
| Highest temperature | 88°F | ||
| Lowest temperature | 85°F | ||
| Sea temperature | 87°F | ||
| Rainfall | 6.3in | ||
| Number of days with rainfall | 11 day(s) (34%) | ||
| Humidity | 76% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 31% | ||
| Length of day | 12:34 | ||
| Our opinion at whereandwhen.net | good |
Climate in Koh Madsum in may
In the month of may, maximum temperature is 88°F and minimum temperature is 85°F (for an average temperature of 86°F). The climate is very hot in this location in may. With 6.3in over 11 days, rain may occur throughout your vacations. But this is rather moderate and it is only of temporary showers.
With a good weather, may is a good month to go in this locality in Ko Samui.
| May | |||
| Average temperature | 86°F | ||
| Highest temperature | 88°F | ||
| Lowest temperature | 85°F | ||
| Sea temperature | 87°F | ||
| Rainfall | 6.3in | ||
| Number of days with rainfall | 11 day(s) (34%) | ||
| Humidity | 76% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 31% | ||
| Length of day | 12:33 | ||
| Our opinion at whereandwhen.net | good |
All cities on the island of Koh Samui in may
| Chaweng Beach in may | good weather |
| Bang Kao (Laem Sor beach) in may | good weather |
| Bophut in may | good weather |
| Choeng Mon in may | good weather |
| Koh Madsum in may | good weather |
| Koh Phaluai in may | tolerable weather |
| Koh Taen in may | good weather |
| Lamai beach in may | good weather |
| Lipa Noi in may | good weather |
| Maenam in may | good weather |
| Nathon in may | good weather |
Weather data for Koh Samui in may:
Weather data for Koh Samui in may is derived from an average of the weather forecast since 2009 on the island of Koh Samui. There is a margin of error and these forecasts are to be considered as general information only. The weather on the island of Koh Samui can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Koh Samui.