Weather today
°C °F
September 20, 2026
Sunday
28°
0.4 mm
28°
0.8 mm
26°
0.8 mm
25°
1.2 mm

The local weather in Koh Samui today

Sunday, 20 September 2026

The weather today in Koh Samui will be hot with temperatures reaching 29°C. During the evening and night time the temperatures will drop to 25°C.

For deep dive information check out our hourly weather forecast for today down the page.

Today's hourly weather in Koh Samui

Previous day
Next day
00:0003:0006:0009:0012:0015:0018:0021:00
Temperature29°C28°C27°C28°C28°C27°C26°C25°C
Weather
Overcast
Light rain shower
Light rain shower
Light rain shower
Light rain shower
Light rain shower
Light rain shower
Light rain shower
Chance of rain18%57%63%48%62%55%66%74%
Precipitation0 mm0.7 mm0.8 mm0.4 mm0.8 mm0.5 mm0.8 mm1.2 mm
Humidity73%78%82%80%81%85%85%89%
Wind21Km/h27Km/h20Km/h21Km/h23Km/h24Km/h13Km/h10Km/h
Wind Gust27Km/h29Km/h24Km/h24Km/h23Km/h35Km/h16Km/h10Km/h
Wind Degree239°
258°
252°
250°
234°
231°
208°
121°
Wind DirectionWSWWSWWSWWSWSWSWSSWESE
Cloud Cover94%100%100%100%100%99%100%100%
UV Index00019300
Visibility10 Km10 Km10 Km10 Km10 Km10 Km10 Km10 Km

Koh Samui today weather

Morning

The temperature in Koh Samui today in the early morning is 27°C.

If you take into account factors such as wind, humidity and other weather conditions, the temperatures can feel like 31°C.

The chance of rain in Koh Samui in the morning is 63%, and the wind will blow at 20km/h.

Noon

The temperature in Koh Samui today at noon time is 28°C and it will feel like 32°C. The humidity will be around 81% with wind speed of 23km/h.

Evening

The temperature in Koh Samui today's evening will get to 27°C.

The chance of rain in Koh Samui in the evening time is 55%, with wind speed of 24km/h.

Night

The night temperature in Koh Samui today is 25°C with a wind speed of 10km/h.

The weather in Koh Samui today - FAQ

What is the weather today in Koh Samui?
The wather forecast for today in Koh Samui is mostly light rain shower.
What is today's highest and lowest temperature in Koh Samui?
The temperature today in Koh Samui will range between 25° and 29°.
Will it be raining today in Koh Samui?
The chance of rain today in Koh Samui is 74%.
Will it be windy today in Koh Samui?
The wind will blow between 10 Km/h to 27 Km/h today in Koh Samui.
How many hours of sunlight today in Koh Samui?
There will be 0 hours of sun today in Koh Samui.
What time is the sunrise and sunset today in Koh Samui?
The sun will rise at 06:09 and set at 18:17.

Clothing recommendation for Koh Samui

Sunday, 20 September 2026
Umbrella
T-Shirt

Sunrise and sunset time in Koh Samui today

What time is the sunset and sunrise in Koh Samui today? The sun will rise at 06:09 and will set at 18:17. There will be 0 hours of sunlight in Koh Samui.

Sunrise
06:09
Sunset
18:17
More about the weather in Koh Samui