Measurements:
°C
°F
CURRENT WEATHER
17:31
Samui
90°F
E 17 mph
Feels like: 102°F
Precip: 100%
World Resorts Thailand Samui Weather

7 Day Weather Forecast

05.14
thu
DAY
88°F
E 12 mph
precip
100%
NIGHT
88°F
E 16 mph
precip
0%
05.15
fri
DAY
88°F
E 13 mph
precip
0%
NIGHT
88°F
E 21 mph
precip
0%
05.16
sat
DAY
90°F
E 17 mph
precip
100%
NIGHT
90°F
NE 15 mph
precip
0%
05.17
sun
DAY
88°F
E 16 mph
precip
0%
NIGHT
84°F
E 22 mph
precip
100%
05.18
mon
DAY
88°F
E 20 mph
precip
0%
NIGHT
86°F
E 24 mph
precip
100%
05.19
tue
DAY
86°F
E 27 mph
precip
100%
NIGHT
84°F
E 33 mph
precip
100%
05.20
wed
DAY
88°F
E 23 mph
precip
100%
NIGHT
88°F
E 20 mph
precip
100%

Samui Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Samui was 30.6°F. The maximum and minimum values were 30.3°F and 30.9°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 92.6 °F
June 92.0 °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
more details