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Ko Samui weather in May 2021
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- 3232°C max day temperature
- 1717 days with some rainfall
- 2525°C min night temperature
- 1313 hours of daylight per day
- VHVery High heat & humidity
- 172172 mm of monthly rainfall
- 1111+ (Extreme) UV index
- 3030°C sea temperature
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The May weather guide for Ko Samui, Thailand shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
How hot is it in Ko Samui in May?
Daytime temperatures usually reach 32°C in Ko Samui in May with very high heat and humidity, falling to 25°C at night.
How sunny is it in Ko Samui in May?
There are normally 6 hours of bright sunshine each day in Ko Samui in May - that's 51% of daylight hours.
How warm is the sea around Ko Samui in May?
The average sea temperature around Ko Samui in May is 30°C.
Does it rain in Ko Samui in May?
There are usually 17 days with some rain in Ko Samui in May and the average monthly rainfall is 172mm.
Metric (°C / mm) | Imperial (°F / inches)
Ko Samui sunrise & sunset times for May 2021
Browse the sunrise and sunset times for Ko Samui in May 2021. Select a month to view Ko Samui sunrise & sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Saturday, 1st May 2021||06:03||18:31|
|Sunday, 16th May 2021||05:59||18:33|
|Monday, 31st May 2021||05:58||18:37|
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