Ko Samui (Thailand) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 33° Celsius; Minimum nighttime temperature: 25° Celsius;
Maximum daytime temperature: 33° Celsius; Minimum nighttime temperature: 25° Celsius; -
Maximum daytime temperature: 34° Celsius; Minimum nighttime temperature: 25° Celsius;
Maximum daytime temperature: 34° Celsius; Minimum nighttime temperature: 25° Celsius;
-
Maximum daytime temperature: 35° Celsius; Minimum nighttime temperature: 25° Celsius;
Maximum daytime temperature: 35° Celsius; Minimum nighttime temperature: 25° Celsius;
-
Maximum daytime temperature: 35° Celsius; Minimum nighttime temperature: 25° Celsius;
Maximum daytime temperature: 35° Celsius; Minimum nighttime temperature: 25° Celsius;
-
Maximum daytime temperature: 35° Celsius; Minimum nighttime temperature: 26° Celsius;
Maximum daytime temperature: 35° Celsius; Minimum nighttime temperature: 26° Celsius;
-
Maximum daytime temperature: 34° Celsius; Minimum nighttime temperature: 26° Celsius;
Maximum daytime temperature: 34° Celsius; Minimum nighttime temperature: 26° Celsius;
-
Maximum daytime temperature: 34° Celsius; Minimum nighttime temperature: 26° Celsius;
Maximum daytime temperature: 34° Celsius; Minimum nighttime temperature: 26° Celsius;
Sunny intervals.
Sunrise:
Sunset:
Ex UV
No pollution data.
No pollen data.
7 day forecast for Ko Samui
Today (18 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%
|
10%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature |
26°
|
25°
|
25°
|
25°
|
26°
|
27°
|
29°
|
30°
|
31°
|
32°
|
31°
|
33°
|
32°
|
32°
|
31°
|
30°
|
28°
|
27°
|
27°
|
27°
|
26°
|
| Feels like temperature (°C) |
25°
|
25°
|
25°
|
25°
|
26°
|
27°
|
29°
|
31°
|
32°
|
34°
|
33°
|
36°
|
34°
|
34°
|
33°
|
30°
|
28°
|
26°
|
26°
|
26°
|
25°
|
| Wind direction and speed |
WSW
14
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
13
|
WSW
12
|
WSW
12
|
W
11
|
W
11
|
WNW
12
|
WNW
13
|
W
14
|
W
14
|
WSW
15
|
WSW
14
|
WSW
15
|
WSW
15
|
| Wind gust (mph) |
20
|
20
|
20
|
20
|
20
|
20
|
19
|
19
|
18
|
17
|
15
|
16
|
17
|
17
|
20
|
20
|
21
|
20
|
20
|
21
|
22
|
| Visibility |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
78%
|
79%
|
79%
|
79%
|
80%
|
79%
|
78%
|
76%
|
75%
|
74%
|
72%
|
72%
|
72%
|
72%
|
72%
|
70%
|
68%
|
68%
|
68%
|
69%
|
73%
|
| UV | - | - | - | - | 1 | 3 | 5 | 9 | 6 | 9 | 9 | 7 | 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 |
<5%
|
<5%
|
10%
|
<5%
|
10%
|
<5%
|
<5%
|
10%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
10%
|
<5%
|
| Temperature (°C) |
26°
|
26°
|
26°
|
26°
|
26°
|
25°
|
25°
|
26°
|
28°
|
30°
|
31°
|
32°
|
33°
|
34°
|
34°
|
33°
|
33°
|
32°
|
31°
|
29°
|
28°
|
27°
|
27°
|
26°
|
| Feels like temperature (°C) |
25°
|
25°
|
24°
|
24°
|
24°
|
24°
|
24°
|
26°
|
28°
|
31°
|
33°
|
35°
|
36°
|
37°
|
37°
|
37°
|
36°
|
34°
|
31°
|
28°
|
27°
|
26°
|
26°
|
25°
|
| Wind direction and speed (mph) |
WSW
16
|
WSW
16
|
WSW
16
|
WSW
16
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
14
|
WSW
14
|
WSW
13
|
WSW
13
|
WSW
13
|
W
12
|
W
11
|
WNW
11
|
WNW
11
|
WNW
12
|
WNW
13
|
W
15
|
W
16
|
W
15
|
WSW
15
|
WSW
14
|
WSW
14
|
| Wind gust (mph) |
23
|
23
|
23
|
22
|
21
|
21
|
21
|
20
|
19
|
19
|
18
|
17
|
16
|
16
|
16
|
16
|
17
|
19
|
21
|
22
|
21
|
20
|
20
|
20
|
| 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 |
74%
|
75%
|
75%
|
76%
|
77%
|
77%
|
78%
|
78%
|
77%
|
76%
|
75%
|
74%
|
73%
|
73%
|
73%
|
74%
|
74%
|
73%
|
71%
|
68%
|
67%
|
67%
|
69%
|
71%
|
| UV | - | - | - | - | - | - | - | 1 | 4 | 7 | 10 | 12 | 13 | 11 | 9 | 5 | 2 | 1 | - | - | - | - | - | - |
Sunday (20 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%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
26°
|
26°
|
26°
|
25°
|
25°
|
25°
|
25°
|
26°
|
28°
|
29°
|
31°
|
32°
|
34°
|
34°
|
35°
|
35°
|
34°
|
33°
|
31°
|
29°
|
28°
|
27°
|
27°
|
26°
|
| Feels like temperature (°C) |
25°
|
25°
|
24°
|
24°
|
24°
|
24°
|
24°
|
26°
|
28°
|
30°
|
33°
|
35°
|
37°
|
37°
|
38°
|
39°
|
38°
|
36°
|
32°
|
29°
|
27°
|
26°
|
25°
|
25°
|
| Wind direction and speed (mph) |
WSW
15
|
WSW
15
|
WSW
16
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
14
|
WSW
14
|
WSW
13
|
WSW
13
|
WSW
13
|
WSW
12
|
W
12
|
W
11
|
WNW
11
|
NW
10
|
NW
10
|
NW
11
|
WNW
13
|
WNW
15
|
W
17
|
W
16
|
W
16
|
WSW
16
|
| Wind gust (mph) |
21
|
22
|
22
|
22
|
21
|
21
|
20
|
19
|
19
|
19
|
18
|
17
|
16
|
16
|
15
|
14
|
15
|
17
|
20
|
22
|
23
|
22
|
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 |
74%
|
74%
|
75%
|
75%
|
76%
|
75%
|
76%
|
77%
|
76%
|
76%
|
75%
|
74%
|
73%
|
72%
|
73%
|
73%
|
73%
|
72%
|
71%
|
69%
|
68%
|
67%
|
67%
|
68%
|
| UV | - | - | - | - | - | - | - | 1 | 4 | 7 | 10 | 12 | 13 | 11 | 9 | 5 | 2 | 1 | - | - | - | - | - | - |
Monday (21 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%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
26°
|
26°
|
25°
|
25°
|
25°
|
25°
|
25°
|
26°
|
28°
|
30°
|
31°
|
33°
|
33°
|
34°
|
34°
|
35°
|
34°
|
33°
|
31°
|
29°
|
28°
|
27°
|
27°
|
26°
|
| Feels like temperature (°C) |
25°
|
24°
|
24°
|
24°
|
24°
|
24°
|
24°
|
25°
|
28°
|
30°
|
33°
|
35°
|
36°
|
37°
|
37°
|
38°
|
37°
|
34°
|
30°
|
27°
|
26°
|
26°
|
25°
|
25°
|
| Wind direction and speed (mph) |
WSW
16
|
WSW
15
|
WSW
16
|
WSW
16
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
13
|
W
13
|
W
13
|
WNW
13
|
WNW
13
|
WNW
13
|
WNW
14
|
NW
15
|
WNW
17
|
WNW
18
|
WNW
17
|
W
16
|
W
16
|
W
16
|
| Wind gust (mph) |
22
|
22
|
22
|
22
|
21
|
21
|
21
|
21
|
20
|
19
|
19
|
18
|
18
|
18
|
18
|
19
|
21
|
23
|
25
|
25
|
23
|
22
|
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 |
72%
|
73%
|
74%
|
74%
|
75%
|
75%
|
75%
|
76%
|
75%
|
75%
|
75%
|
74%
|
73%
|
73%
|
74%
|
73%
|
73%
|
71%
|
69%
|
67%
|
66%
|
66%
|
67%
|
69%
|
| UV | - | - | - | - | - | - | - | 1 | 4 | 7 | 10 | 12 | 12 | 11 | 8 | 5 | 2 | 1 | - | - | - | - | - | - |
Tuesday (22 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 |
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
26°
|
26°
|
26°
|
26°
|
26°
|
26°
|
25°
|
26°
|
31°
|
33°
|
34°
|
29°
|
27°
|
| Feels like temperature (°C) |
25°
|
25°
|
24°
|
24°
|
24°
|
24°
|
24°
|
25°
|
32°
|
35°
|
34°
|
28°
|
26°
|
| Wind direction and speed (mph) |
W
16
|
W
16
|
W
16
|
W
17
|
W
17
|
WSW
17
|
WSW
16
|
WSW
16
|
W
15
|
W
16
|
WNW
18
|
WNW
20
|
W
17
|
| Wind gust (mph) |
23
|
23
|
23
|
24
|
23
|
24
|
23
|
22
|
23
|
25
|
29
|
28
|
24
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
72%
|
74%
|
74%
|
75%
|
75%
|
75%
|
76%
|
76%
|
75%
|
75%
|
68%
|
69%
|
73%
|
| UV | - | - | - | - | - | - | - | 1 | 8 | 10 | 2 | - | - |
Wednesday (23 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%
|
10%
|
<5%
|
10%
|
10%
|
<5%
|
10%
|
| Temperature (°C) |
27°
|
26°
|
27°
|
31°
|
33°
|
32°
|
29°
|
27°
|
| Feels like temperature (°C) |
26°
|
25°
|
25°
|
31°
|
34°
|
32°
|
27°
|
26°
|
| Wind direction and speed (mph) |
W
17
|
WSW
18
|
WSW
18
|
WSW
18
|
W
19
|
W
21
|
W
21
|
WSW
20
|
| Wind gust (mph) |
25
|
25
|
26
|
26
|
28
|
30
|
30
|
29
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
75%
|
78%
|
81%
|
76%
|
74%
|
71%
|
68%
|
75%
|
| UV | - | - | 1 | 6 | 9 | 1 | - | - |
Thursday (24 September 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
| Temperature (°C) |
27°
|
26°
|
27°
|
31°
|
33°
|
32°
|
29°
|
28°
|
| Feels like temperature (°C) |
25°
|
25°
|
25°
|
30°
|
34°
|
32°
|
27°
|
26°
|
| Wind direction and speed (mph) |
WSW
20
|
WSW
20
|
WSW
20
|
WSW
19
|
W
19
|
W
20
|
WSW
20
|
WSW
18
|
| Wind gust (mph) |
30
|
29
|
28
|
28
|
29
|
30
|
28
|
26
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
77%
|
81%
|
81%
|
76%
|
71%
|
71%
|
69%
|
74%
|
| UV | - | - | 1 | 8 | 9 | 2 | - | - |
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Forecast for 03:00 (UTC+7), Fri
Updated 19:25 (UTC+1) on Thu 18 Sep 2025
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