World Resorts Thailand Samui Weather

Samui sea water temperature

Current sea water temperature:
+82.4°F
Minimum sea water temperature in February: 84.9°F
Maximum sea water temperature in February: 80.1°F
Average sea water temperature in February: 83.1°F

Sea water temperature for the last 10 days:

February 4 82.4°F January 30 81.9°F
February 3 82.2°F January 29 82.2°F
February 2 82.2°F January 28 81.9°F
February 1 82.2°F January 27 82.0°F
January 31 82.0°F January 26 82.0°F

When is the warmest sea in Samui?

Based on the data about daily sea water temperature for the last three years the warmest sea in Samui was noticed in May, April and June.

Monthly Sea Temperatures in Samui, °F

Sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 87.1°F. The highest and lowest sea temperatures during the month were 87.6°F and 86.5°F.

Sea water temperature in April, °F

Show year:
2025
2024
2023

The average sea water temperature in April of 2025 was 86.4°F. The highest and lowest sea temperatures during the month were 88.3°F and 84.6°F.

Sea water temperature in June, °F

Show year:
2025
2024
2023

The average sea water temperature in June of 2025 was 86.1°F. The highest and lowest sea temperatures during the month were 86.9°F and 85.1°F.

Best time for vacation in Samui

Sunniest months:
April 17 days
March 15 days
May 14 days
Warmest months:
May 88.3 °F
June 87.8 °F
July 87.1 °F
Warmest sea temp:
May 87.4 °F
April 86.5 °F
June 86.5 °F
Coldest months:
January 83.0 °F
February 83.5 °F
December 83.6 °F
Rainiest months:
November 15 days
October 11 days
December 9 days
Windiest months:
July 12.3 mph
September 11.9 mph
December 11.6 mph

Samui on a weather map

Samui
+79°F
N 9 mph
Feels like: +84°F
Precip.: 100%
Places in Thailand:
Name
°F
+82°F
+77°F
+77°F
+77°F
+79°F
+79°F
+79°F
+75°F
+77°F
+77°F
+79°F
+77°F
+79°F
+75°F
24 Hours Forecast
Samui
Local time: 02:17
February 05, thursday
0300
79°F
N
9 mph
0600
79°F
N
11 mph
0900
81°F
N
11 mph
1200
81°F
NW
11 mph
1500
81°F
NW
11 mph
1800
81°F
NW
11 mph
2100
81°F
NW
12 mph
February 06, friday
0000
81°F
NW
11 mph
Units of measurement: °C / °F