Ko Samui weather in May 2024

Expect 90°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Ko Samui in May. Check more long-term weather averages for Ko Samui in May before you book your next holiday to Thailand in 2024/2025.

  • 90°F maximum daytime temperature in May in Ko Samui90
    90°F max day temperature
  • 6 hours of sunshine per day
  • 17 days with some rainfall in May in Ko Samui17
    17 days with some rainfall
  • 77°F minimum night-time temperature in May in Ko Samui77
    77°F min night temperature
  • 13 hours of daylight per day in May in Ko Samui13
    13 hours of daylight per day
  • Very high heat & humidity in May in Ko SamuiVH
    Very High heat & humidity
  • 6.8 inches monthly rainfall in May in Ko Samui6.8
    6.8 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Ko Samui11
    11+ (Extreme) UV index
  • 86°F sea temperature in May in Ko Samui86
    86°F sea temperature

More about Ko Samui

Ko Samui by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Thailand

First Choice: Top deals on 2024/2025 holidays

  • Save on summer & winter sun holidays in 2024/2025
  • Book holidays to popular destinations around the world
  • Pay £0 deposits & spread cost with direct debit
Go to First Choice deal >>

View all First Choice offers

First ChoiceHoliday deal finder

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)  |  Imperial (°F)

Back to top

More about Thailand

How hot is it in Ko Samui in May?

Daytime temperatures usually reach 90°F in Ko Samui in May with very high heat and humidity, falling to 77°F 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 86°F.

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 6.8 inches.

Ko Samui May sunrise & sunset times

Browse the sunrise and sunset times for Ko Samui in May 2024. Select a month to view Ko Samui sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st May 2024 06:03 18:31
Thursday, 16th May 2024 05:59 18:33
Friday, 31st May 2024 05:58 18:37

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^