World Resorts Thailand Koh Lanta Weather

Koh Lanta sea water temperature

Current sea water temperature:
+87.6°F
Minimum sea water temperature in April: 90.1°F
Maximum sea water temperature in April: 84.0°F
Average sea water temperature in April: 87.3°F

Sea water temperature for the last 10 days:

April 4 87.6°F March 30 86.7°F
April 3 87.8°F March 29 86.5°F
April 2 87.4°F March 28 86.5°F
April 1 86.7°F March 27 86.2°F
March 31 86.5°F March 26 86.2°F

When is the warmest sea in Koh Lanta?

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

Monthly Sea Temperatures in Koh Lanta, °F

Sea water temperature in April, °F

Show year:
2025
2024
2023

The average sea water temperature in April of 2025 was 87.4°F. The highest and lowest sea temperatures during the month were 88.7°F and 86.2°F.

Sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 86.6°F. The highest and lowest sea temperatures during the month were 88.0°F and 85.5°F.

Sea water temperature in June, °F

Show year:
2025
2024
2023

The average sea water temperature in June of 2025 was 86.0°F. The highest and lowest sea temperatures during the month were 86.9°F and 85.1°F.

Best time for vacation in Koh Lanta

Sunniest months:
March 21 days
February 18 days
April 16 days
Warmest months:
April 88.2 °F
May 88.1 °F
March 87.8 °F
Warmest sea temp:
April 87.3 °F
May 87.3 °F
June 86.3 °F
Coldest months:
November 85.6 °F
September 85.7 °F
December 85.7 °F
Rainiest months:
September 14 days
October 14 days
May 13 days
Windiest months:
September 11.7 mph
August 11.1 mph
July 11.0 mph

Koh Lanta on a weather map

Koh Lanta
+86°F
E 15 mph
Feels like: +93°F
Precip.: 0%
Places in Thailand:
Name
°F
+97°F
+86°F
+86°F
+86°F
+90°F
+86°F
+86°F
+84°F
+84°F
+86°F
+90°F
+86°F
+86°F
+84°F
+90°F
24 Hours Forecast
Koh Lanta
Local time: 13:39
April 05, sunday
1500
86°F
E
15 mph
1800
86°F
E
17 mph
2100
84°F
E
12 mph
April 06, monday
0000
84°F
E
11 mph
0300
84°F
E
12 mph
0600
84°F
SE
10 mph
0900
86°F
SE
9 mph
1200
86°F
E
11 mph
Units of measurement: °C / °F