Koh Samui (Thailand) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 31° Celsius; Minimum nighttime temperature: 23° Celsius;
Maximum daytime temperature: 31° Celsius; Minimum nighttime temperature: 23° Celsius; -
Maximum daytime temperature: 30° Celsius; Minimum nighttime temperature: 23° Celsius;
Maximum daytime temperature: 30° Celsius; Minimum nighttime temperature: 23° Celsius;
-
Maximum daytime temperature: 30° Celsius; Minimum nighttime temperature: 23° Celsius;
Maximum daytime temperature: 30° Celsius; Minimum nighttime temperature: 23° Celsius;
-
Maximum daytime temperature: 31° Celsius; Minimum nighttime temperature: 22° Celsius;
Maximum daytime temperature: 31° Celsius; Minimum nighttime temperature: 22° Celsius;
-
Maximum daytime temperature: 32° Celsius; Minimum nighttime temperature: 22° Celsius;
Maximum daytime temperature: 32° Celsius; Minimum nighttime temperature: 22° Celsius;
-
Maximum daytime temperature: 32° Celsius; Minimum nighttime temperature: 22° Celsius;
Maximum daytime temperature: 32° Celsius; Minimum nighttime temperature: 22° Celsius;
-
Maximum daytime temperature: 32° Celsius; Minimum nighttime temperature: 23° Celsius;
Maximum daytime temperature: 32° Celsius; Minimum nighttime temperature: 23° Celsius;
Sunny changing to partly cloudy by nighttime.
Sunrise:
Sunset:
Ex UV
No pollution data.
No pollen data.
7 day forecast for Koh Samui
Today (16 September 2025)
| Time |
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
|
 |
 |
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
20%
|
20%
|
20%
|
10%
|
10%
|
<5%
|
<5%
|
| Temperature |
23°
|
23°
|
23°
|
23°
|
23°
|
25°
|
26°
|
28°
|
29°
|
30°
|
30°
|
29°
|
29°
|
29°
|
28°
|
27°
|
26°
|
25°
|
24°
|
24°
|
24°
|
| Feels like temperature (°C) |
22°
|
22°
|
22°
|
21°
|
23°
|
24°
|
26°
|
29°
|
31°
|
32°
|
32°
|
30°
|
30°
|
30°
|
29°
|
27°
|
24°
|
24°
|
23°
|
22°
|
22°
|
| Wind direction and speed |
WSW
12
|
WSW
12
|
WSW
12
|
WSW
12
|
WSW
12
|
WSW
12
|
WSW
12
|
W
11
|
W
11
|
W
11
|
WNW
12
|
WNW
12
|
WNW
12
|
WNW
12
|
W
12
|
W
13
|
W
15
|
W
15
|
W
15
|
W
15
|
W
15
|
| Wind gust (mph) |
17
|
17
|
17
|
17
|
17
|
17
|
17
|
17
|
16
|
16
|
17
|
17
|
17
|
17
|
18
|
20
|
21
|
21
|
21
|
21
|
21
|
| Visibility |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
75%
|
76%
|
76%
|
76%
|
76%
|
76%
|
77%
|
77%
|
75%
|
75%
|
75%
|
76%
|
76%
|
74%
|
74%
|
74%
|
73%
|
72%
|
73%
|
74%
|
75%
|
| UV | - | - | - | - | 1 | 3 | 7 | 9 | 12 | 12 | 11 | 9 | 5 | 2 | 1 | - | - | - | - | - | - |
Thursday (17 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
<5%
|
10%
|
10%
|
20%
|
10%
|
20%
|
10%
|
10%
|
10%
|
10%
|
10%
|
20%
|
10%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
10%
|
10%
|
| Temperature (°C) |
23°
|
23°
|
23°
|
23°
|
23°
|
23°
|
23°
|
24°
|
25°
|
26°
|
27°
|
29°
|
29°
|
29°
|
29°
|
28°
|
28°
|
27°
|
27°
|
25°
|
25°
|
24°
|
24°
|
24°
|
| Feels like temperature (°C) |
22°
|
22°
|
21°
|
21°
|
21°
|
21°
|
21°
|
22°
|
24°
|
26°
|
27°
|
29°
|
29°
|
29°
|
29°
|
27°
|
27°
|
26°
|
25°
|
23°
|
22°
|
22°
|
22°
|
22°
|
| Wind direction and speed (mph) |
W
15
|
W
15
|
W
15
|
WSW
15
|
WSW
16
|
WSW
15
|
WSW
15
|
W
15
|
WSW
15
|
W
15
|
W
15
|
W
15
|
W
15
|
W
15
|
W
16
|
W
17
|
W
17
|
W
17
|
W
17
|
W
18
|
W
18
|
WSW
17
|
WSW
17
|
WSW
17
|
| Wind gust (mph) |
21
|
21
|
22
|
21
|
21
|
21
|
21
|
21
|
21
|
21
|
21
|
21
|
21
|
22
|
22
|
24
|
24
|
24
|
24
|
25
|
24
|
24
|
23
|
23
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
75%
|
75%
|
76%
|
76%
|
77%
|
76%
|
77%
|
77%
|
76%
|
76%
|
76%
|
75%
|
75%
|
75%
|
75%
|
75%
|
74%
|
73%
|
73%
|
71%
|
72%
|
74%
|
74%
|
75%
|
| UV | - | - | - | - | - | - | - | 1 | 3 | 6 | 9 | 11 | 8 | 11 | 8 | 3 | 2 | 1 | - | - | - | - | - | - |
Friday (18 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
10%
|
10%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
10%
|
10%
|
20%
|
20%
|
10%
|
10%
|
<5%
|
10%
|
| Temperature (°C) |
24°
|
24°
|
24°
|
23°
|
23°
|
23°
|
23°
|
24°
|
25°
|
27°
|
27°
|
28°
|
30°
|
29°
|
29°
|
29°
|
29°
|
28°
|
27°
|
26°
|
25°
|
24°
|
24°
|
24°
|
| Feels like temperature (°C) |
22°
|
22°
|
21°
|
21°
|
21°
|
21°
|
21°
|
22°
|
24°
|
26°
|
27°
|
28°
|
30°
|
29°
|
29°
|
28°
|
28°
|
27°
|
25°
|
23°
|
22°
|
22°
|
22°
|
22°
|
| Wind direction and speed (mph) |
WSW
16
|
WSW
16
|
WSW
16
|
WSW
16
|
WSW
17
|
WSW
17
|
WSW
17
|
WSW
16
|
WSW
16
|
WSW
15
|
WSW
16
|
W
16
|
W
16
|
W
15
|
W
15
|
W
16
|
W
17
|
W
18
|
W
19
|
W
18
|
W
18
|
W
17
|
W
16
|
WSW
17
|
| Wind gust (mph) |
23
|
23
|
23
|
23
|
23
|
23
|
23
|
23
|
23
|
22
|
22
|
21
|
22
|
22
|
22
|
23
|
24
|
25
|
26
|
25
|
25
|
23
|
23
|
24
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
75%
|
76%
|
76%
|
77%
|
78%
|
78%
|
78%
|
81%
|
79%
|
78%
|
76%
|
76%
|
76%
|
74%
|
74%
|
72%
|
73%
|
72%
|
71%
|
71%
|
72%
|
73%
|
74%
|
75%
|
| UV | - | - | - | - | - | - | - | 1 | 3 | 5 | 7 | 7 | 9 | 9 | 8 | 5 | 2 | 1 | - | - | - | - | - | - |
Saturday (19 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
<5%
|
10%
|
10%
|
20%
|
20%
|
10%
|
<5%
|
10%
|
10%
|
<5%
|
<5%
|
10%
|
10%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
10%
|
| Temperature (°C) |
24°
|
23°
|
23°
|
23°
|
23°
|
23°
|
23°
|
24°
|
25°
|
27°
|
28°
|
29°
|
30°
|
31°
|
30°
|
31°
|
30°
|
29°
|
27°
|
26°
|
25°
|
24°
|
24°
|
24°
|
| Feels like temperature (°C) |
22°
|
21°
|
21°
|
21°
|
21°
|
21°
|
21°
|
22°
|
24°
|
26°
|
28°
|
29°
|
31°
|
32°
|
31°
|
31°
|
30°
|
28°
|
25°
|
24°
|
23°
|
22°
|
22°
|
22°
|
| Wind direction and speed (mph) |
WSW
17
|
WSW
17
|
WSW
17
|
WSW
16
|
WSW
16
|
WSW
16
|
WSW
16
|
WSW
16
|
WSW
15
|
WSW
16
|
WSW
15
|
WSW
14
|
W
14
|
W
14
|
WNW
15
|
WNW
16
|
WNW
16
|
W
19
|
W
19
|
W
17
|
WSW
17
|
WSW
16
|
WSW
16
|
WSW
16
|
| Wind gust (mph) |
23
|
23
|
23
|
23
|
23
|
22
|
22
|
22
|
22
|
21
|
20
|
21
|
20
|
20
|
22
|
23
|
25
|
26
|
25
|
25
|
23
|
23
|
22
|
22
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
75%
|
76%
|
76%
|
76%
|
77%
|
78%
|
81%
|
81%
|
79%
|
77%
|
75%
|
74%
|
74%
|
74%
|
74%
|
75%
|
73%
|
72%
|
71%
|
71%
|
71%
|
69%
|
72%
|
73%
|
| UV | - | - | - | - | - | - | - | 1 | 3 | 6 | 10 | 11 | 12 | 11 | 8 | 5 | 2 | 1 | - | - | - | - | - | - |
Sunday (20 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
10%
|
<5%
|
<5%
|
10%
|
10%
|
<5%
|
| Temperature (°C) |
23°
|
23°
|
23°
|
23°
|
23°
|
23°
|
22°
|
24°
|
28°
|
32°
|
31°
|
26°
|
24°
|
| Feels like temperature (°C) |
21°
|
21°
|
21°
|
21°
|
21°
|
21°
|
20°
|
22°
|
29°
|
33°
|
33°
|
24°
|
22°
|
| Wind direction and speed (mph) |
WSW
16
|
WSW
16
|
WSW
16
|
WSW
16
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
14
|
WNW
12
|
WNW
12
|
WNW
16
|
WSW
15
|
| Wind gust (mph) |
22
|
22
|
22
|
21
|
21
|
21
|
21
|
21
|
19
|
17
|
22
|
23
|
21
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
75%
|
75%
|
76%
|
76%
|
77%
|
77%
|
77%
|
78%
|
75%
|
72%
|
72%
|
67%
|
68%
|
| UV | - | - | - | - | - | - | - | 1 | 10 | 11 | 2 | - | - |
Monday (21 September 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
23°
|
22°
|
24°
|
29°
|
31°
|
31°
|
26°
|
24°
|
| Feels like temperature (°C) |
21°
|
21°
|
22°
|
29°
|
33°
|
33°
|
24°
|
22°
|
| Wind direction and speed (mph) |
WSW
14
|
WSW
14
|
WSW
14
|
WSW
12
|
WNW
12
|
WNW
12
|
WNW
15
|
W
15
|
| Wind gust (mph) |
20
|
20
|
20
|
18
|
18
|
21
|
23
|
23
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
73%
|
73%
|
76%
|
75%
|
74%
|
73%
|
67%
|
68%
|
| UV | - | - | 1 | 10 | 11 | 2 | - | - |
Tuesday (22 September 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
| Temperature (°C) |
23°
|
23°
|
24°
|
29°
|
31°
|
31°
|
27°
|
25°
|
| Feels like temperature (°C) |
21°
|
21°
|
22°
|
28°
|
32°
|
30°
|
24°
|
22°
|
| Wind direction and speed (mph) |
W
15
|
W
16
|
W
16
|
W
15
|
WNW
16
|
WNW
18
|
W
21
|
W
19
|
| Wind gust (mph) |
23
|
23
|
23
|
23
|
24
|
29
|
29
|
28
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
74%
|
75%
|
76%
|
75%
|
75%
|
72%
|
71%
|
74%
|
| UV | - | - | 1 | 10 | 10 | 2 | - | - |
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Forecast for 03:00 (UTC+7), Wed
Updated 19:29 (UTC+1) on Tue 16 Sep 2025
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