World Resorts Thailand Ko Phangan Weather

Ko Phangan Sea Temperature in September

Average sea water temperature in September:
+84.9°F
Minimum sea water temperature in September: 88.0°F
Maximum sea water temperature in September: 81.3°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 84.7°F. The highest and lowest sea temperatures during the month were 85.6°F and 83.5°F.

Monthly sea water temperature in Ko Phangan, °F

Which Thailand resorts have warmest sea in September?

Place name September 2025 September 2024
Hat Yai 86.0°F 85.8°F
Narathiwat 85.9°F 85.7°F
Ko Li Pe 85.8°F 85.7°F
Pattani 85.5°F 85.6°F
Cha-am 85.2°F 86.0°F
Hua Hin 85.2°F 86.0°F
Lamai Beach 85.1°F 85.8°F
Taling Ngam Beach 85.0°F 85.5°F
Chaweng Beach 85.0°F 85.7°F
Bangkok 84.9°F 85.8°F
Samui 84.9°F 85.6°F
Koh Lan 84.9°F 86.0°F
Koh Lanta 84.9°F 84.7°F
Choeng Mon Beach 84.9°F 85.6°F
Mae Nam Beach 84.9°F 85.5°F
Bo Phut Beach 84.9°F 85.5°F
Krabi 84.8°F 85.1°F
Phi Phi 84.8°F 85.0°F
Pattaya 84.8°F 85.7°F
Ko Phangan 84.7°F 85.4°F

Best time for vacation in Ko Phangan

Sunniest months:
April 17 days
May 14 days
March 14 days
Warmest months:
May 87.9 °F
June 87.2 °F
April 86.8 °F
Warmest sea temp:
May 87.5 °F
April 86.5 °F
June 86.4 °F
Coldest months:
January 83.0 °F
February 83.3 °F
December 83.7 °F
Rainiest months:
November 14 days
October 13 days
September 10 days
Windiest months:
July 13.1 mph
September 12.7 mph
December 12.3 mph

Ko Phangan on a weather map

Ko Phangan
+81°F
NW 13 mph
Feels like: +88°F
Precip.: 0%
Places in Thailand:
Name
°F
+79°F
+81°F
+84°F
+84°F
+81°F
+81°F
+81°F
+82°F
+84°F
+84°F
+81°F
+84°F
+81°F
+81°F
24 Hours Forecast
Ko Phangan
Local time: 11:14
December 05, friday
1200
81°F
NW
13 mph
1500
81°F
NW
16 mph
1800
81°F
W
16 mph
2100
81°F
W
15 mph
December 06, saturday
0000
81°F
NW
13 mph
0300
81°F
W
15 mph
0600
81°F
W
12 mph
0900
81°F
W
12 mph
Units of measurement: °C / °F