Koh Samui weather in November 2025

Expect 29°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Koh Samui in November. Check more long-term weather averages for Koh Samui in November before you book your next holiday to Thailand in 2025/2026.

  • 29°C maximum daytime temperature in November in Koh Samui29
    29°C max day temperature
  • 6 hours of sunshine per day
  • 19 days with some rainfall in November in Koh Samui19
    19 days with some rainfall
  • 23°C minimum night-time temperature in November in Koh Samui23
    23°C min night temperature
  • 12 hours of daylight per day in November in Koh Samui12
    12 hours of daylight per day
  • High heat & humidity in November in Koh SamuiH
    High heat & humidity
  • 463 mm monthly rainfall in November in Koh Samui463
    463 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in November in Koh Samui11
    11 (Extreme) UV index
  • 28°C sea temperature in November in Koh Samui28
    28°C sea temperature

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The November weather guide for Thailand (Koh 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)

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How hot is it in Koh Samui in November?

Daytime temperatures usually reach 29°C in Koh Samui in November with high heat and humidity, falling to 23°C at night.

How sunny is it in Koh Samui in November?

There are normally 6 hours of bright sunshine each day in Koh Samui in November - that's 47% of daylight hours.

How warm is the sea around Koh Samui in November?

The average sea temperature around Koh Samui in November is 28°C.

Does it rain in Koh Samui in November?

There are usually 19 days with some rain in Koh Samui in November and the average monthly rainfall is 463mm.

What is the chance of a typhoon in Koh Samui in November?

On average less than 1 day in November in Koh Samui is likely to be affected by the passage of one or more tropical storms.

Koh Samui November sunrise & sunset times

Browse the sunrise and sunset times for Koh Samui in November 2025. Select a month to view Koh Samui sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st November 2025 06:10 17:57
Saturday, 15th November 2025 06:14 17:55
Sunday, 30th November 2025 06:20 17:57

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