Koh Samui
Tours Tours Things To See Things To See Weather Forecast

Weather Forecast for Koh Samui

Surat Thani, Thailand

select dropwdown icon
Share
Sunny

Current Weather - Koh Samui: 28°C

Surat Thani, Thailand

Sunny

Feels like 32°C

Wind

17 km/h SE

Humidity

74%

Pressure

1010 mb

UV Index

1

Visibility

10 km
Partly Cloudy

Partly Cloudy

Monday, January 19, 2026

High

27°C

Low

26°C

Rain Chance

0%

Hourly Forecast

Partly Cloudy 26°C
11:00
Sunny 26°C
12:00
Sunny 26°C
13:00
Sunny 26°C
14:00
Sunny 26°C
15:00
Sunny 27°C
16:00
Sunny 28°C
17:00
Sunny 27°C
18:00
Partly Cloudy 27°C
19:00
Clear 27°C
20:00
Partly Cloudy 27°C
21:00
Partly Cloudy 27°C
22:00
Partly Cloudy 27°C
23:00
Jan 20

Day Statistics

Maximum Wind

25 km/h

Humidity

78%

Precipitation

0 mm

UV Index

2

Visibility

10 km

Rain Chance

0%

Snow Chance

0%

Sun & Moon

Sunrise

06:41 AM

Sunset

06:20 PM

Moonrise

06:59 AM

Moonset

06:50 PM

Moon Phase

Waxing Crescent

Moon Illumination

0%

Air Quality

PM2.5

17.7

μg/m³

PM10

21.8

μg/m³

NO₂

1.4

μg/m³

O₃

104.2

μg/m³

SO₂

1.7

μg/m³

CO

228.4

μg/m³

US EPA Index: 2 GB DEFRA Index: 2

Solar Radiation Data

Shortwave Radiation

582.78

Diffuse Radiation

186.77

DNI

586.06

GTI

532.14