Measurements:
°C
°F
CURRENT WEATHER
18:47
Samui
90°F
E 6 mph
Feels like: 96°F
Precip: 16%
World Resorts Thailand Samui Weather

7 Day Weather Forecast

10.04
sun
DAY
88°F
E 8 mph
precip
20%
NIGHT
88°F
SE 12 mph
precip
19%
10.05
mon
DAY
86°F
E 11 mph
precip
22%
NIGHT
88°F
SE 6 mph
precip
17%
10.06
tue
DAY
86°F
E 9 mph
precip
26%
NIGHT
88°F
E 7 mph
precip
19%
10.07
wed
DAY
88°F
SE 7 mph
precip
20%
NIGHT
86°F
S 8 mph
precip
60%
10.08
thu
DAY
88°F
SE 13 mph
precip
20%
NIGHT
86°F
E 14 mph
precip
20%
10.09
fri
DAY
86°F
E 11 mph
precip
53%
NIGHT
86°F
SE 9 mph
precip
45%
10.10
sat
DAY
88°F
SE 6 mph
precip
18%
NIGHT
88°F
N 4 mph
precip
17%

Samui Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Samui was 29.4°F. The maximum and minimum values were 28.9°F and 29.8°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
August 11 mph
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