Measurements:
°C
°F
Surat Thani
80°F
NE 6 mph
Feels like: 86°F
Precip: 27%
World Resorts Thailand Surat Thani Weather

Surat Thani Sea Water Temperature

Current Sea Water Temperature:
+88.4°F
Maximum Sea Water Temperature in September: 91.0°F
Minimum Sea Water Temperature in September: 85.2°F
Average water temperature in September: 88.3°F

Sea Water Temperature for the Last 10 Days:

September 28 88.4°F September 23 88.6°F
September 27 88.8°F September 22 89.0°F
September 26 89.8°F September 21 87.8°F
September 25 89.8°F September 20 89.2°F
September 24 88.8°F September 19 88.4°F

When is the Warmest Sea for Surat Thani?

According to our data for the last three years for Surat Thani the highest average sea water temperature was in April, May and June.

Average Water Temperature by Month, °F

Sea Water Temperature in April

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Surat Thani was 91.8°F. The maximum and minimum values were 89.0°F and 93.0°F respectively.

Sea Water Temperature in May

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Surat Thani was 90.9°F. The maximum and minimum values were 89.8°F and 92.2°F respectively.

Sea Water Temperature in June

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Surat Thani was 90.7°F. The maximum and minimum values were 89.0°F and 92.0°F respectively.

Best Time to Visit Surat Thani
The most sunny months:
March 24 days
February 20 days
April 20 days
The most warm months:
April 97.6 °F
March 96.1 °F
May 95.7 °F
Warmest sea temperature:
April 91.3 °F
May 91.3 °F
June 90.0 °F
The most cold months:
December 88.7 °F
January 89.5 °F
November 90.3 °F
The most rainy months:
May 14 days
October 13 days
September 11 days
The most windy months:
December 7 mph
July 7 mph
August 7 mph

Surat Thani on the Weather Map

Thailand Resorts:
NAME
F°
Bang Tao Beach +84
Bangkok +80
Cape Panwa +84
Hua Hin +80
Karon Beach +84
Kata Beach +84
Khao Lak +82
Koh Chang +86
Nai Yang Beach +84
Pattaya +78
Phangan +86
Phi Phi +88
Phuket +84
Samet +86
Samui +86
24 Hours Weather Forecast
Surat Thani
Local time: 06:59
29 sep, tuesday
0900 86°F
NE
7 mph
1200 92°F
N
5 mph
1500 92°F
NW
7 mph
1800 86°F
S
5 mph
2100 84°F
SW
4 mph
30 sep, wednesday
0000 84°F
E
2 mph
0300 82°F
NE
2 mph
0600 80°F
NE
3 mph