World Resorts Thailand Koh Lanta Weather

Koh Lanta sea water temperature

Current sea water temperature:
+88.7°F
Minimum sea water temperature in May: 90.5°F
Maximum sea water temperature in May: 82.9°F
Average sea water temperature in May: 87.3°F

Sea water temperature for the last 10 days:

May 15 88.7°F May 10 88.9°F
May 14 88.9°F May 9 88.5°F
May 13 88.9°F May 8 88.5°F
May 12 88.5°F May 7 88.9°F
May 11 88.9°F May 6 88.9°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:
2026
2025
2024

The average sea water temperature in April of 2026 was 88.7°F. The highest and lowest sea temperatures during the month were 90.3°F and 86.7°F.

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 88.7°F. The highest and lowest sea temperatures during the month were 89.1°F and 88.2°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:
May 88.1 °F
April 88.0 °F
March 87.8 °F
Warmest sea temp:
April 87.4 °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
+82°F
E 15 mph
Feels like: +91°F
Precip.: 100%
Places in Thailand:
Name
°F
+84°F
+81°F
+81°F
+81°F
+82°F
+84°F
+84°F
+81°F
+82°F
+84°F
+81°F
+84°F
+81°F
24 Hours Forecast
Koh Lanta
Local time: 06:12
May 16, saturday
0900
84°F
E
13 mph
1200
84°F
E
14 mph
1500
86°F
E
14 mph
1800
84°F
E
14 mph
2100
86°F
E
14 mph
May 17, sunday
0000
82°F
E
15 mph
0300
82°F
E
14 mph
0600
82°F
SE
16 mph
Units of measurement: °C / °F