14.09
mon
mon
Day
82°F
SW 11 mph
Precip.
29%
29%
Night
82°F
NW 11 mph
Precip.
39%
39%
15.09
tue
tue
Day
81°F
N 13 mph
Precip.
35%
35%
Night
79°F
N 9 mph
Precip.
79%
79%
16.09
wed
wed
Day
84°F
N 12 mph
Precip.
61%
61%
Night
81°F
NW 9 mph
Precip.
75%
75%
17.09
thu
thu
Day
82°F
N 2 mph
Precip.
18%
18%
Night
84°F
NE 19 mph
Precip.
38%
38%
18.09
fri
fri
Day
82°F
N 6 mph
Precip.
67%
67%
Night
82°F
NE 21 mph
Precip.
71%
71%
19.09
sat
sat
Day
81°F
NW 12 mph
Precip.
71%
71%
Night
81°F
N 25 mph
Precip.
81%
81%
20.09
sun
sun
Day
81°F
N 25 mph
Precip.
87%
87%
Night
81°F
NW 17 mph
Precip.
76%
76%
21.09
mon
mon
Day
81°F
NW 11 mph
Precip.
72%
72%
Night
81°F
N 5 mph
Precip.
23%
23%
22.09
tue
tue
Day
84°F
NE 8 mph
Precip.
25%
25%
Night
84°F
E 2 mph
Precip.
16%
16%
23.09
wed
wed
Day
79°F
SW 6 mph
Precip.
35%
35%
Night
81°F
SE 9 mph
Precip.
24%
24%
24.09
thu
thu
Day
79°F
E 11 mph
Precip.
36%
36%
Night
82°F
NE 6 mph
Precip.
19%
19%
25.09
fri
fri
Day
82°F
SE 4 mph
Precip.
20%
20%
Night
82°F
E 9 mph
Precip.
69%
69%
26.09
sat
sat
Day
82°F
NE 6 mph
Precip.
19%
19%
Night
84°F
E 11 mph
Precip.
18%
18%
27.09
sun
sun
Day
82°F
SE 7 mph
Precip.
7%
7%
Night
84°F
N 9 mph
Precip.
42%
42%
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 85.6°F and 84.6°F.
Air temperature in Koh Lan, °F
Precipitation total in Koh Lan, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Koh Lan
Koh Lan on a weather map
Places in Thailand:
Name
°F
24 Hours Forecast
Koh Lan
Local time: 10:54
September 14, monday
1200
82°F
SW
11 mph
11 mph
1500
81°F
SW
8 mph
8 mph
1800
81°F
W
9 mph
9 mph
2100
82°F
N
9 mph
9 mph
September 15, tuesday
0000
82°F
NW
11 mph
11 mph
0300
81°F
NW
10 mph
10 mph
0600
79°F
NW
7 mph
7 mph
0900
79°F
NW
11 mph
11 mph
