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Weather Forecast for Koh Samui

Surat Thani, Thailand

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Cloudy

Current Weather - Koh Samui: 28°C

Surat Thani, Thailand

Cloudy

Feels like 31°C

Wind

5 km/h SSE

Humidity

75%

Pressure

1013 mb

UV Index

9

Visibility

10 km
Light rain shower

Light rain shower

Tuesday, October 20, 2026

High

28°C

Low

26°C

Rain Chance

85%

Hourly Forecast

Light rain shower 27°C
06:00
Overcast 28°C
07:00
Patchy rain nearby 28°C
08:00
Light rain shower 28°C
09:00
Light rain shower 28°C
10:00
Cloudy 28°C
11:00
Partly Cloudy 28°C
12:00
Partly Cloudy 28°C
13:00
Patchy rain nearby 28°C
14:00
Light drizzle 28°C
15:00
Light rain shower 28°C
16:00
Light rain shower 28°C
17:00
Moderate rain 28°C
18:00
Moderate or heavy rain shower 28°C
19:00
Moderate or heavy rain shower 28°C
20:00
Light rain shower 27°C
21:00
Light rain shower 27°C
22:00
Light drizzle 26°C
23:00
Oct 21

Day Statistics

Maximum Wind

17 km/h

Humidity

78%

Precipitation

26 mm

UV Index

9

Visibility

9 km

Rain Chance

85%

Snow Chance

0%

Sun & Moon

Sunrise

06:08 AM

Sunset

06:01 PM

Moonrise

02:04 PM

Moonset

01:17 AM

Moon Phase

Waxing Gibbous

Moon Illumination

77%

Air Quality

PM2.5

2.7

μg/m³

PM10

3.3

μg/m³

NO₂

0.9

μg/m³

O₃

88.5

μg/m³

SO₂

0.5

μg/m³

CO

258.9

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

757.32

Diffuse Radiation

269.58

DNI

567.52

GTI

719.53