Koh Samui monthly weather forecast

Monthly weather forecast for Koh Samui. ℃ Average temperatures % Humidity, precipitation ️ Sunrise and sunset ️ Wind direction and speed

31 August 2026, Monday
+25°C / +30°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+26°C
17.3
71%
963
01:00
+25°C
15.8
75%
962
02:00
+25°C
15.9
77%
962
03:00
+25°C
16.2
78%
961
04:00
+25°C
15.6
79%
961
05:00
+25°C
17
79%
962
06:00
+25°C
16.2
80%
962
07:00
+26°C
13.4
78%
962
08:00
+27°C
13.7
73%
963
09:00
+28°C
16.5
67%
964
10:00
+29°C
18
62%
964
11:00
+29°C
18.8
59%
963
12:00
+30°C
20.1
56%
963
13:00
+30°C
21.2
58%
962
14:00
+30°C
22.8
57%
962
15:00
+28°C
20.3
67%
961
16:00
+28°C
16.9
63%
961
17:00
+28°C
16.8
65%
960
18:00
+27°C
16.1
71%
961
19:00
+26°C
13.3
74%
961
20:00
+26°C
14.9
78%
962
21:00
+26°C
14.3
80%
963
22:00
+26°C
14.1
82%
964
23:00
+26°C
14.8
81%
964
01 September 2026, Tuesday
+23°C / +30°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+25°C
14.7
81%
963
01:00
+25°C
14.2
82%
963
02:00
+25°C
14.5
82%
962
03:00
+25°C
14.4
81%
962
04:00
+25°C
13.1
82%
962
05:00
+25°C
12.7
82%
962
06:00
+25°C
12.7
82%
962
07:00
+25°C
13.4
79%
963
08:00
+26°C
13.9
74%
963
09:00
+27°C
13.9
69%
964
10:00
+28°C
15
64%
964
11:00
+29°C
15.4
61%
964
12:00
+30°C
15.1
59%
964
13:00
+30°C
14.8
58%
963
14:00
+30°C
14.8
58%
962
15:00
+30°C
13.5
61%
962
16:00
+29°C
12.4
60%
961
17:00
+28°C
10.5
63%
961
18:00
+27°C
7.8
68%
961
19:00
+25°C
6.6
82%
962
20:00
+24°C
12
92%
964
21:00
+23°C
7.8
98%
965
22:00
+24°C
7.4
96%
965
23:00
+24°C
8.9
95%
965
02 September 2026, Wednesday
+24°C / +29°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+24°C
13.4
95%
965
01:00
+24°C
14.3
94%
964
02:00
+24°C
15.1
94%
963
03:00
+24°C
14.4
94%
962
04:00
+24°C
14.4
92%
962
05:00
+24°C
14.4
91%
962
06:00
+24°C
14.8
90%
962
07:00
+24°C
14.5
89%
963
08:00
+25°C
14.8
82%
964
09:00
+26°C
15.3
76%
965
10:00
+27°C
14.5
73%
965
11:00
+28°C
16.2
70%
964
12:00
+28°C
19.4
66%
964
13:00
+28°C
15
72%
963
14:00
+29°C
19.7
62%
962
15:00
+29°C
19.3
60%
961
16:00
+28°C
18.2
64%
960
17:00
+27°C
15.3
67%
960
18:00
+27°C
14.8
68%
961
19:00
+25°C
12
81%
961
20:00
+25°C
13
81%
963
21:00
+25°C
14.6
81%
964
22:00
+24°C
15.4
84%
965
23:00
+24°C
16.4
87%
964
03 September 2026, Thursday
+23°C / +28°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+24°C
16
89%
964
01:00
+24°C
19.9
88%
963
02:00
+23°C
16.4
92%
962
03:00
+23°C
16.1
93%
961
04:00
+23°C
16
93%
961
05:00
+23°C
16.1
92%
961
06:00
+23°C
18.2
92%
962
07:00
+23°C
19.9
90%
963
08:00
+24°C
15.3
85%
963
09:00
+25°C
18.4
81%
964
10:00
+27°C
18.2
69%
964
11:00
+28°C
22.5
68%
964
12:00
+28°C
22.1
65%
963
13:00
+28°C
19.2
65%
963
14:00
+28°C
18.9
66%
961
15:00
+28°C
19.2
63%
960
16:00
+27°C
19.1
66%
960
17:00
+24°C
24.3
86%
960
18:00
+23°C
15.1
96%
960
19:00
+23°C
12.8
95%
961
20:00
+23°C
16
93%
962
21:00
+23°C
16.1
93%
963
22:00
+23°C
16
94%
964
23:00
+24°C
16.5
93%
963
04 September 2026, Friday
+23°C / +27°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+23°C
18.5
93%
963
01:00
+23°C
15.6
91%
962
02:00
+24°C
15.8
90%
961
03:00
+24°C
16.1
90%
961
04:00
+24°C
16.3
90%
961
05:00
+24°C
16.1
90%
961
06:00
+24°C
15.8
91%
962
07:00
+24°C
15.7
89%
962
08:00
+25°C
16.1
84%
963
09:00
+26°C
16.4
77%
964
10:00
+27°C
16.5
73%
965
11:00
+27°C
15.7
73%
964
12:00
+27°C
14.9
75%
963
13:00
+26°C
14.5
76%
963
14:00
+27°C
15.1
73%
962
15:00
+27°C
16
70%
961
16:00
+27°C
15.7
69%
961
17:00
+26°C
13.4
74%
961
18:00
+25°C
11.2
84%
961
19:00
+24°C
11
91%
961
20:00
+23°C
11.7
92%
962
21:00
+24°C
12.9
90%
964
22:00
+24°C
14.1
88%
964
23:00
+24°C
15.2
87%
964
05 September 2026, Saturday
+23°C / +28°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+24°C
16.3
86%
963
01:00
+24°C
17.3
86%
963
02:00
+24°C
18.7
87%
962
03:00
+23°C
20.8
89%
962
04:00
+23°C
21.7
91%
962
05:00
+23°C
19.9
93%
962
06:00
+23°C
17.1
95%
962
07:00
+23°C
15.5
95%
963
08:00
+24°C
15
91%
963
09:00
+25°C
15.1
85%
964
10:00
+25°C
14.9
79%
964
11:00
+26°C
14.3
73%
964
12:00
+28°C
13.9
68%
964
13:00
+28°C
14.2
65%
963
14:00
+28°C
15.5
65%
962
15:00
+28°C
17.7
67%
961
16:00
+27°C
19.2
70%
961
17:00
+26°C
18.8
73%
961
18:00
+26°C
17.3
78%
961
19:00
+25°C
16.1
82%
962
20:00
+25°C
15.6
84%
963
21:00
+25°C
15.4
85%
964
22:00
+25°C
15.3
85%
964
23:00
+24°C
15.7
87%
964
06 September 2026, Sunday
+24°C / +28°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+24°C
16.3
89%
964
01:00
+24°C
16.7
90%
963
02:00
+24°C
16.5
90%
963
03:00
+24°C
16.1
89%
962
04:00
+24°C
15.8
89%
962
05:00
+24°C
14.9
88%
963
06:00
+24°C
14.5
87%
963
07:00
+24°C
14.4
85%
963
08:00
+25°C
14.6
82%
963
09:00
+26°C
15.2
78%
963
10:00
+27°C
16.2
74%
963
11:00
+27°C
17.1
70%
963
12:00
+28°C
17.8
67%
963
13:00
+28°C
18.1
66%
963
14:00
+28°C
17.6
67%
963
15:00
+28°C
16.6
70%
963
16:00
+27°C
15.4
74%
962
17:00
+26°C
14.3
78%
962
18:00
+25°C
13.5
82%
962
19:00
+25°C
13.1
85%
962
20:00
+24°C
13.2
86%
962
21:00
+24°C
13.5
85%
962
22:00
+24°C
14.1
85%
963
23:00
+25°C
14.7
84%
963
07 September 2026, Monday
+24°C / +29°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+25°C
15.4
83%
963
01:00
+25°C
15.7
83%
963
02:00
+25°C
15.7
83%
963
03:00
+24°C
15.5
84%
963
04:00
+24°C
15.2
85%
963
05:00
+24°C
15
86%
963
06:00
+24°C
14.6
86%
963
07:00
+25°C
14.6
85%
963
08:00
+25°C
14.7
82%
963
09:00
+26°C
15.3
77%
963
10:00
+27°C
16
72%
963
11:00
+28°C
16.8
68%
963
12:00
+29°C
17.6
65%
962
13:00
+29°C
18
64%
962
14:00
+29°C
17.8
65%
962
15:00
+28°C
17.2
67%
962
16:00
+27°C
16.3
72%
961
17:00
+26°C
15.7
76%
961
18:00
+25°C
15.1
81%
960
19:00
+25°C
15.1
84%
960
20:00
+25°C
15.1
86%
960
21:00
+24°C
15.3
88%
961
22:00
+24°C
15.5
88%
961
23:00
+24°C
15.9
89%
961
08 September 2026, Tuesday
+23°C / +28°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+24°C
16
89%
962
01:00
+24°C
16.1
90%
962
02:00
+24°C
15.9
90%
962
03:00
+24°C
15.4
91%
962
04:00
+24°C
15
91%
962
05:00
+24°C
14.4
91%
961
06:00
+24°C
14.2
90%
961
07:00
+24°C
14.3
89%
961
08:00
+24°C
14.8
86%
961
09:00
+25°C
15.8
82%
961
10:00
+26°C
17.1
77%
961
11:00
+27°C
18.3
74%
961
12:00
+27°C
19.4
71%
961
13:00
+28°C
19.9
70%
961
14:00
+27°C
19.5
72%
961
15:00
+27°C
18.7
75%
960
16:00
+26°C
17.5
80%
960
17:00
+25°C
16.2
85%
960
18:00
+24°C
15.1
90%
960
19:00
+24°C
14.4
93%
960
20:00
+23°C
14
95%
960
21:00
+23°C
14.1
96%
960
22:00
+23°C
14.2
96%
960
23:00
+23°C
14.3
96%
961
09 September 2026, Wednesday
+22°C / +28°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+23°C
14.7
96%
961
01:00
+23°C
15
96%
961
02:00
+23°C
15.4
96%
961
03:00
+23°C
15.9
96%
961
04:00
+23°C
16.5
97%
961
05:00
+23°C
16.9
97%
961
06:00
+23°C
17.3
96%
961
07:00
+23°C
17.7
94%
961
08:00
+24°C
18.1
90%
961
09:00
+25°C
18.7
85%
961
10:00
+26°C
19.4
79%
961
11:00
+27°C
20
75%
961
12:00
+28°C
20.7
71%
961
13:00
+28°C
20.7
70%
961
14:00
+28°C
20
72%
961
15:00
+27°C
18.7
75%
961
16:00
+26°C
17.4
80%
961
17:00
+25°C
15.8
86%
961
18:00
+24°C
14.6
92%
961
19:00
+23°C
13.8
95%
961
20:00
+23°C
13.2
97%
961
21:00
+22°C
12.9
98%
961
22:00
+23°C
12.7
98%
961
23:00
+23°C
12.4
97%
962
10 September 2026, Thursday
+22°C / +27°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+23°C
12.4
96%
962
01:00
+23°C
12.5
96%
962
02:00
+23°C
12.8
96%
962
03:00
+23°C
13.6
97%
962
04:00
+22°C
14.4
98%
962
05:00
+22°C
15.2
98%
962
06:00
+23°C
15.9
98%
962
07:00
+23°C
16.3
96%
962
08:00
+23°C
16.4
93%
962
09:00
+24°C
16.6
87%
961
10:00
+25°C
16.9
82%
961
11:00
+26°C
17.2
77%
961
12:00
+27°C
17.3
73%
961
13:00
+27°C
17.3
72%
961
14:00
+27°C
16.7
73%
961
15:00
+27°C
15.7
77%
961
16:00
+26°C
14.5
81%
961
17:00
+25°C
13.4
87%
961
18:00
+24°C
12.8
92%
961
19:00
+23°C
12.5
95%
961
20:00
+23°C
12.4
97%
961
21:00
+23°C
12.4
98%
961
22:00
+23°C
12.8
97%
962
23:00
+23°C
12.9
97%
962
11 September 2026, Friday
+22°C / +26°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+23°C
13.3
96%
962
01:00
+23°C
13.7
96%
962
02:00
+23°C
14.3
96%
962
03:00
+22°C
14.8
97%
962
04:00
+22°C
15.6
98%
962
05:00
+22°C
16.2
98%
962
06:00
+22°C
16.9
97%
962
07:00
+22°C
17.6
96%
962
08:00
+23°C
18.4
93%
962
09:00
+24°C
19.4
89%
962
10:00
+25°C
20.4
85%
962
11:00
+25°C
21.5
81%
962
12:00
+26°C
22.2
78%
962
13:00
+26°C
22.5
77%
962
14:00
+26°C
22.2
78%
962
15:00
+26°C
21.3
80%
962
16:00
+25°C
20.1
84%
961
17:00
+24°C
19
88%
961
18:00
+24°C
17.9
91%
961
19:00
+23°C
17.1
94%
961
20:00
+23°C
16.7
95%
961
21:00
+23°C
16.3
96%
961
22:00
+23°C
16.2
96%
962
23:00
+23°C
16
96%
962
12 September 2026, Saturday
+23°C / +25°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+23°C
16
96%
962
01:00
+23°C
16
96%
962
02:00
+23°C
16.1
96%
962
03:00
+23°C
16.1
97%
963
04:00
+23°C
16.3
97%
963
05:00
+23°C
16.4
97%
963
06:00
+23°C
16.6
97%
963
07:00
+23°C
16.6
96%
963
08:00
+23°C
16.6
95%
963
09:00
+23°C
16.7
92%
963
10:00
+24°C
16.8
90%
963
11:00
+24°C
16.8
88%
963
12:00
+24°C
16.9
86%
963
13:00
+25°C
16.9
86%
963
14:00
+25°C
16.6
86%
963
15:00
+24°C
16.1
88%
963
16:00
+24°C
15.4
89%
962
17:00
+24°C
14.8
92%
962
18:00
+23°C
14.4
94%
962
19:00
+23°C
14
95%
962
20:00
+23°C
13.8
95%
962
21:00
+23°C
13.4
95%
963
22:00
+23°C
13.2
94%
963
23:00
+23°C
13.2
94%
963
13 September 2026, Sunday
+23°C / +27°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+23°C
13.1
94%
963
01:00
+23°C
13.2
93%
964
02:00
+23°C
13.5
94%
964
03:00
+23°C
14.1
95%
964
04:00
+23°C
14.7
96%
963
05:00
+23°C
15.4
97%
963
06:00
+23°C
15.8
97%
963
07:00
+23°C
16
96%
963
08:00
+23°C
15.8
94%
963
09:00
+24°C
15.4
89%
963
10:00
+25°C
15
85%
964
11:00
+26°C
14.9
81%
964
12:00
+27°C
15
78%
964
13:00
+27°C
15
77%
964
14:00
+27°C
14.8
78%
964
15:00
+26°C
14.7
80%
964
16:00
+25°C
14.4
84%
963
17:00
+24°C
14.2
89%
963
18:00
+23°C
14.1
93%
963
19:00
+23°C
14
96%
963
20:00
+23°C
13.9
97%
963
21:00
+23°C
13.9
97%
963
22:00
+23°C
13.8
97%
964
23:00
+23°C
13.8
96%
964


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