World Resorts Thailand Koh Lanta Weather

Koh Lanta 7 Days Forecast

09.09
wed
Day
84°F
E 14 mph
Precip.
44%
Night
84°F
E 15 mph
Precip.
22%
10.09
thu
Day
82°F
E 14 mph
Precip.
63%
Night
84°F
E 16 mph
Precip.
20%
11.09
fri
Day
82°F
SE 16 mph
Precip.
64%
Night
82°F
SE 16 mph
Precip.
66%
12.09
sat
Day
82°F
SE 15 mph
Precip.
19%
Night
82°F
E 17 mph
Precip.
68%
13.09
sun
Day
79°F
NE 13 mph
Precip.
43%
Night
81°F
SE 14 mph
Precip.
66%
14.09
mon
Day
82°F
E 17 mph
Precip.
61%
Night
82°F
E 18 mph
Precip.
64%
15.09
tue
Day
81°F
E 15 mph
Precip.
74%
Night
81°F
E 14 mph
Precip.
74%

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 84.9°F. The highest and lowest sea temperatures during the month were 86.5°F and 83.7°F.

Air temperature in Koh Lanta, °F

Precipitation total in Koh Lanta, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Koh Lanta

Sunniest months:
March 21 days
February 18 days
April 16 days
Warmest months:
April 88.0 °F
May 87.9 °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 11.2 mph
July 11.1 mph

Koh Lanta on a weather map

Current weather
08:35
Koh Lanta
+84°F
SE 13 mph
Feels like: +91°F
Precip.: 47%
Places in Thailand:
Name
°F
Bang Tao Beach
+81°F
Bangkok
+88°F
Khao Lak
+82°F
Karon Beach
+81°F
Kata Beach
+81°F
Samet
+82°F
Koh Chang
+81°F
Cape Panwa
+81°F
Nai Yang Beach
+81°F
Phangan
+82°F
Pattaya
+84°F
Phi Phi
+84°F
Phuket
+81°F
Samui
+82°F
Hua Hin
+84°F
all places
24 Hours Forecast
Koh Lanta
Local time: 08:35
September 09, wednesday
0900
84°F
SE
13 mph
1200
84°F
E
14 mph
1500
84°F
E
15 mph
1800
84°F
E
14 mph
2100
84°F
E
16 mph
September 10, thursday
0000
84°F
E
15 mph
0300
84°F
E
16 mph
0600
84°F
E
17 mph
Units of measurement: °C / °F