- Browse the best deals on hotel stays & compare prices
- Check lowest rates by month & also by day of the week
- Search by date or browse hotels by destination & map
Ko Samui weather in May 2023
- 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
Recommended for Thailand
The May weather guide for Thailand (Ko Samui) 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.
Metric (°C / mm) | Imperial (°F / inches)
More about Thailand
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.
Ko Samui May sunrise & sunset times
Browse the sunrise and sunset times for Ko Samui in May 2023. Select a month to view Ko Samui sunrise and sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Monday, 1st May 2023||06:03||18:31|
|Tuesday, 16th May 2023||05:59||18:33|
|Wednesday, 31st May 2023||05:58||18:37|
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Popular travel offers
*affiliate links: find out how we are funded and why this helps us remain free to use.