Measurements:
°C
°F
CURRENT WEATHER
23:20
Koh Lanta
86°F
SE 15 mph
Feels like: 94°F
Precip: 64%
World Resorts Thailand Koh Lanta Weather

7 Day Weather Forecast

09.11
fri
DAY
88°F
SE 16 mph
precip
62%
NIGHT
86°F
SE 15 mph
precip
64%
09.12
sat
DAY
88°F
E 15 mph
precip
31%
NIGHT
84°F
E 15 mph
precip
65%
09.13
sun
DAY
84°F
E 15 mph
precip
72%
NIGHT
82°F
SE 14 mph
precip
47%
09.14
mon
DAY
84°F
NE 11 mph
precip
26%
NIGHT
84°F
SE 15 mph
precip
25%
09.15
tue
DAY
88°F
NE 3 mph
precip
8%
NIGHT
88°F
NE 4 mph
precip
17%
09.16
wed
DAY
86°F
E 7 mph
precip
54%
NIGHT
86°F
E 15 mph
precip
67%
09.17
thu
DAY
84°F
E 21 mph
precip
86%
NIGHT
84°F
E 27 mph
precip
74%

Koh Lanta Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Koh Lanta was 29.4°F. The maximum and minimum values were 28.7°F and 30.3°F respectively.

Koh Lanta on the Weather Map

Best Time to Visit Koh Lanta
The most sunny months:
March 21 days
February 18 days
April 16 days
The most warm months:
April 92.3 °F
May 92.1 °F
March 92.0 °F
Warmest sea temperature:
April 91.5 °F
May 91.5 °F
June 90.4 °F
The most cold months:
November 89.5 °F
September 89.7 °F
December 89.7 °F
The most rainy months:
September 14 days
October 14 days
May 13 days
The most windy months:
September 11 mph
August 11 mph
July 11 mph
more details