Weather Forecast for Koh Samui
Surat Thani, Thailand
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Current Weather - Koh Samui: 28°C
Current Weather - Koh Samui: 28°C
Surat Thani, Thailand
Light rain
Feels like 31°C
Wind
20 km/h NE
Humidity
70%
Pressure
1015 mb
UV Index
10
Visibility
10 km
Patchy rain nearby
Monday, December 08, 2025
High
27°C
Low
26°C
Rain Chance
83%
Hourly Forecast
26°C
27°C
27°C
27°C
27°C
27°C
28°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
Day Statistics
Maximum Wind
21 km/h
Humidity
71%
Precipitation
1 mm
UV Index
2
Visibility
10 km
Rain Chance
83%
Snow Chance
0%
Sun & Moon
Sunrise
06:24 AM
Sunset
05:59 PM
Moonrise
09:36 PM
Moonset
09:39 AM
Moon Phase
Waning Gibbous
Moon Illumination
87%
Air Quality
PM2.5
10.1
μg/m³
PM10
12.8
μg/m³
NO₂
1.5
μg/m³
O₃
102.6
μg/m³
SO₂
1.7
μg/m³
CO
233.1
μg/m³
Patchy rain nearby
Tuesday, December 09, 2025
High
27°C
Low
26°C
Rain Chance
89%
Hourly Forecast
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
26°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
Day Statistics
Maximum Wind
28 km/h
Humidity
71%
Precipitation
3 mm
UV Index
2
Visibility
10 km
Rain Chance
89%
Snow Chance
0%
Sun & Moon
Sunrise
06:24 AM
Sunset
06:00 PM
Moonrise
10:31 PM
Moonset
10:30 AM
Moon Phase
Waning Gibbous
Moon Illumination
78%
Air Quality
PM2.5
12.5
μg/m³
PM10
15.3
μg/m³
NO₂
1.4
μg/m³
O₃
105.6
μg/m³
SO₂
1.7
μg/m³
CO
228.4
μg/m³
Partly Cloudy
Wednesday, December 10, 2025
High
27°C
Low
26°C
Rain Chance
0%
Hourly Forecast
26°C
26°C
26°C
26°C
26°C
26°C
26°C
26°C
26°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
Day Statistics
Maximum Wind
19 km/h
Humidity
71%
Precipitation
0 mm
UV Index
2
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
06:25 AM
Sunset
06:00 PM
Moonrise
11:23 PM
Moonset
11:16 AM
Moon Phase
Waning Gibbous
Moon Illumination
69%
Air Quality
PM2.5
16
μg/m³
PM10
19.3
μg/m³
NO₂
1.5
μg/m³
O₃
125.9
μg/m³
SO₂
2.2
μg/m³
CO
287
μg/m³
Moderate rain
Thursday, December 11, 2025
High
27°C
Low
26°C
Rain Chance
74%
Hourly Forecast
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
26°C
26°C
26°C
26°C
26°C
26°C
27°C
27°C
27°C
27°C
26°C
26°C
Day Statistics
Maximum Wind
28 km/h
Humidity
77%
Precipitation
14 mm
UV Index
2
Visibility
10 km
Rain Chance
74%
Snow Chance
0%
Sun & Moon
Sunrise
06:25 AM
Sunset
06:01 PM
Moonrise
No moonrise
Moonset
11:56 AM
Moon Phase
Last Quarter
Moon Illumination
59%
Air Quality
PM2.5
12
μg/m³
PM10
14.1
μg/m³
NO₂
1.6
μg/m³
O₃
98.6
μg/m³
SO₂
1.7
μg/m³
CO
241.9
μg/m³
Heavy rain
Friday, December 12, 2025
High
28°C
Low
25°C
Rain Chance
72%
Hourly Forecast
26°C
26°C
26°C
27°C
27°C
27°C
27°C
27°C
26°C
26°C
26°C
25°C
25°C
25°C
25°C
25°C
26°C
27°C
28°C
27°C
27°C
27°C
27°C
27°C
Day Statistics
Maximum Wind
36 km/h
Humidity
83%
Precipitation
35 mm
UV Index
0
Visibility
9 km
Rain Chance
72%
Snow Chance
0%
Sun & Moon
Sunrise
06:26 AM
Sunset
06:01 PM
Moonrise
12:10 AM
Moonset
12:34 PM
Moon Phase
Waning Crescent
Moon Illumination
49%
Patchy rain nearby
Saturday, December 13, 2025
High
27°C
Low
27°C
Rain Chance
83%
Hourly Forecast
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
28°C
27°C
27°C
27°C
27°C
Day Statistics
Maximum Wind
16 km/h
Humidity
77%
Precipitation
4 mm
UV Index
6
Visibility
10 km
Rain Chance
83%
Snow Chance
0%
Sun & Moon
Sunrise
06:26 AM
Sunset
06:01 PM
Moonrise
12:56 AM
Moonset
01:11 PM
Moon Phase
Waning Crescent
Moon Illumination
39%
Moderate rain
Sunday, December 14, 2025
High
27°C
Low
26°C
Rain Chance
89%
Hourly Forecast
27°C
26°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
Day Statistics
Maximum Wind
22 km/h
Humidity
78%
Precipitation
6 mm
UV Index
6
Visibility
10 km
Rain Chance
89%
Snow Chance
0%
Sun & Moon
Sunrise
06:27 AM
Sunset
06:02 PM
Moonrise
01:40 AM
Moonset
01:47 PM
Moon Phase
Waning Crescent
Moon Illumination
30%
Solar Radiation Data
Shortwave Radiation
610.34
Diffuse Radiation
101.64
DNI
0
GTI
101.78
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