Measurements:
°C
°F
CURRENT WEATHER
01:20
Samui
86°F
E 19 mph
Feels like: 94°F
Precip: 21%
World Resorts Thailand Samui Weather

7 Day Weather Forecast

08.25
tue
DAY
86°F
E 9 mph
precip
18%
NIGHT
86°F
E 18 mph
precip
19%
08.26
wed
DAY
86°F
SE 9 mph
precip
17%
NIGHT
88°F
E 21 mph
precip
18%
08.27
thu
DAY
88°F
E 25 mph
precip
18%
NIGHT
86°F
NE 21 mph
precip
18%
08.28
fri
DAY
88°F
E 17 mph
precip
20%
NIGHT
86°F
E 24 mph
precip
18%
08.29
sat
DAY
88°F
E 17 mph
precip
26%
NIGHT
86°F
E 22 mph
precip
20%
08.30
sun
DAY
88°F
E 24 mph
precip
36%
NIGHT
86°F
NE 27 mph
precip
20%
08.31
mon
DAY
90°F
E 27 mph
precip
11%
NIGHT
86°F
NE 24 mph
precip
20%

Samui Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Samui was 29.9°F. The maximum and minimum values were 29.6°F and 30.2°F respectively.

Samui on the Weather Map

Best Time to Visit Samui
The most sunny months:
April 18 days
May 14 days
March 14 days
The most warm months:
May 92.3 °F
June 91.8 °F
July 91.1 °F
Warmest sea temperature:
May 91.6 °F
April 90.6 °F
June 90.6 °F
The most cold months:
January 86.7 °F
February 87.0 °F
December 87.3 °F
The most rainy months:
November 15 days
October 11 days
December 9 days
The most windy months:
July 12 mph
September 12 mph
December 11 mph
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