Koh Samui in November
Wettest month
By Daan · Last reviewed October 2026
The short answer
November is one of the weakest months in Koh Samui.
November is the wettest month. Ang Thong park usually closes in November and December.
November in detail
What November actually feels like
- Weather
- 24–30°C
- Around 30°C, the wettest month.
- Crowds
- Low
- Very quiet.
- Prices
- $$
- Lowest rates.
+Lowest prices.
–Heavy rain and rough sea.
My tip for November
Pick another month for a beach holiday.
- Spas
How November compares
Against the other eleven months
12th of 12 overall in Koh Samui, 12th for weather, 1st for space, 1st for value. It is the emptiest month of the year; and it's also the best value.
See all twelve months for Koh SamuiPlan around
What’s on in Koh Samui in November
- Monsoon
- Heavy rain, rough sea. November is the wettest month.
- Ang Thong closure
- The marine park usually closes for part of the monsoon.
October–December
Around November–December
Not set on November?
Months I'd choose over November
Also good in November
Weather
Weather in Koh Samui in November
In November Koh Samui averages a high of 30°C (86°F) and a low of 24°C (75°F), with about 445 mm of rain or snow over 17 wet days. The warmest month is May (around 33°C) and the coolest is January (around 29°C); the wettest month is November.
- Average high
- 30°C
- 86°F
- Average low
- 24°C
- 75°F
- Precipitation
- 445 mm
- Wet days
- 17
Climate data: World Meteorological Organization (Ko Samui, 1991–2020). Temperatures are averages of daily highs and lows.
Quick answers
Koh Samui in November: the questions people ask
- Is November a good time to visit Koh Samui?
- November is one of the weakest months in Koh Samui. It ranks 12 of 12 months in Koh Samui overall (12 for weather, 1 for space, 1 for value). The main upside: Lowest prices. The main downside: Heavy rain and rough sea.
- What is the weather like in Koh Samui in November?
- Average highs are around 30°C and lows around 24°C. Expect about 445 mm of rain or snow over roughly 17 wet days. Around 30°C, the wettest month. For comparison, the warmest month is May (around 33°C) and the coolest is January (around 29°C).
- Is Koh Samui crowded in November?
- Crowds are low. Very quiet. November is the quietest month of the year.
- How expensive is Koh Samui in November?
- Prices are at level 2 of 5 ($$). Lowest rates. November is also the best-value month.
- When is the best time to visit Koh Samui?
- In the CrowdFreeViews month scores, February is the best month overall (November ranks 12 of 12). The quietest month is November and the best value is November.
Still going to Koh Samui in November?
Book early and plan around the busiest hours — heavy rain and rough sea.
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