Average sea temperature by month
Location
Koh Samui
Thailand
Best month
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Sea temperature guide — Chaweng Beach
The sea temperature at Chaweng Beach in November is typically around 28.7°C. The water is very warm — excellent for swimming, snorkeling and water sports.
Jan
27.8°C
Very Warm
Feb
28.3°C
Very Warm
Mar
29.2°C
Very Warm
Apr
30.4°C
Very Warm
May
30.5°C
Very Warm
Jun
30.5°C
Very Warm
Jul
30.4°C
Very Warm
Aug
29.8°C
Very Warm
Sep
29.6°C
Very Warm
Oct
30.4°C
Very Warm
Nov
28.7°C
Very Warm
Dec
27.7°C
Very Warm
When is the best time to swim at Chaweng Beach?
The warmest month at Chaweng Beach is May,
with an average sea temperature of 30.5°C.
This is ideal for swimming and water sports.
Is the sea warm enough to swim at Chaweng Beach in November?
The average sea temperature at Chaweng Beach in November is 28.7°C.
The water is very warm — perfect for swimming, snorkeling and water
sports.
What is the sea temperature at Chaweng Beach today?
The current sea temperature at Chaweng Beach, Koh Samui is updated daily
using satellite observations from the Copernicus Marine Service.
Check the live reading at the top of this page for today's exact temperature.
Heading out onto the water?
Explore boat trips, surfing guides, snorkeling tours, and coastal excursions around Koh Samui.
See the full ocean picture.
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