Ko Samui Weather in May
What's the weather like in Ko Samui (Surat Thani) in May 2024?
The climate in Ko Samui during May can be summarized as very hot, humid and wet.
May is in the spring in Ko Samui and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 25°C (76°F) is normal.
| Daytime temperature | 32°C 89.5°F |
|---|---|
| Nightly temperature | 24.5°C 76°F |
| Average temperature | 28.2°C 82.8°F |
| Daily sunshine | 6.7 hrs |
| Avg rainfall | 172 mm 6.8 ins |
| Rainy days | 17 days |
| Sea temperature | 30.2°C 86.4°F |
| Humidity | 78% |
| Windspeed | 6.8kph 4 mph |
On average May is the 4th wettest month of the year in Ko Samui with around 172mm 6.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.7 hours of sunshine per day.
May temperatures in Ko Samui
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Ko Samui in May 2024.
Other monthly averages
Ko Samui weather stats
| Hottest month: | April | 31.6°C 88.9°F |
|---|---|---|
| Driest month: | February | 39mm 1.5ins |
| Sunniest month: | February | 8.7hrs |
| Coldest month: | January | 28.4°C 83.1°F |
| Wettest month: | November | 463mm 18.2ins |
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