November · Thailand
Best time to visit Koh Samui in November Weather, crowds & prices
Weather in Koh Samui in November
Average temperature 24°C, 346 mm of rain, about 22 days with 6+ hours of sunshine and 85% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
November score
6.5/10
Ranked #12 of 12 months
- Avg temp
- 24°C
- Rainfall
- 346 mm
- Humidity
- 85%
- Days with 6h+ sun
- 22
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
November in Koh Samui scores 6.5/10 for beach and coastal travel - ranked #12 of 12. Expect around 24°C, 346 mm of rain, and roughly 22 days with 6+ hours of sunshine this month.
Koh Samui's ring road links Chaweng's beach, Bophut's Fisherman's Village, and the Big Buddha on the north coast.
November in Koh Samui — middling scores, decent value
With 24°C (75°F) on average, November delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
This is the year's wettest stretch at 346 mm, but with about 22 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 6.5/10 on the same scale — 12th of 12 months, versus 9.3/10 for the best month here.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, March is materially better in Koh Samui — 2.8 points higher on the same scale.
Frequently asked
- What is the weather like in Koh Samui in November?
- In November, Koh Samui averages 24°C, 346 mm of rain, and about 22 days with 6+ hours of sunshine. Its climate-comfort score is 6.5/10.
- Is November a good time to visit Koh Samui?
- November earns a 6.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Koh Samui in November?
- Expect about 346 mm of rain in November. Average humidity is 85% and there are about 22 days with 6+ hours of sunshine.
Curated in Koh Samui
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Things to do in Koh Samui
Koh Samui, Thailand. Live activities and tours from GetYourGuide, matched to this destination.