Measurements:
°C
°F
CURRENT WEATHER
09:00
Samui
88°F
NE 15 mph
Feels like: 96°F
Precip: 8%
World Resorts Thailand Samui Weather

7 Day Weather Forecast

07.14
tue
DAY
88°F
E 17 mph
precip
36%
NIGHT
88°F
E 17 mph
precip
18%
07.15
wed
DAY
88°F
NE 9 mph
precip
37%
NIGHT
88°F
E 3 mph
precip
6%
07.16
thu
DAY
88°F
E 11 mph
precip
18%
NIGHT
90°F
E 5 mph
precip
5%
07.17
fri
DAY
88°F
E 13 mph
precip
7%
NIGHT
88°F
E 16 mph
precip
6%
07.18
sat
DAY
86°F
E 15 mph
precip
8%
NIGHT
88°F
E 19 mph
precip
6%
07.19
sun
DAY
88°F
E 14 mph
precip
11%
NIGHT
86°F
E 22 mph
precip
8%
07.20
mon
DAY
90°F
E 17 mph
precip
11%
NIGHT
88°F
NE 21 mph
precip
7%

Samui Sea Water Temperature in July, °F

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Samui was 29.6°F. The maximum and minimum values were 29.3°F and 29.9°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 91.3 °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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