Weather today
°C °F
June 21, 2026
Sunday
28°
2.8 mm
29°
0 mm
29°
0.1 mm
30°
2.3 mm

The local weather in Koh Samui today

Sunday, 21 June 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 28°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°C29°C28°C28°C29°C29°C29°C30°C
Weather
Light rain shower
Clear
Patchy rain possible
Moderate rain at times
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Chance of rain50%8%56%70%14%16%19%68%
Precipitation0.8 mm0 mm0.9 mm2.8 mm0 mm0 mm0.1 mm2.3 mm
Humidity73%73%76%77%72%69%68%75%
Wind14Km/h15Km/h14Km/h14Km/h10Km/h8Km/h12Km/h23Km/h
Wind Gust24Km/h21Km/h20Km/h19Km/h16Km/h11Km/h16Km/h33Km/h
Wind Degree243°
267°
260°
267°
305°
301°
285°
284°
Wind DirectionWSWWWWNWWNWWNWWNW
Cloud Cover75%22%79%72%72%82%82%25%
UV Index000412700
Visibility10 Km10 Km9 Km8 Km10 Km10 Km10 Km10 Km

Koh Samui today weather

Morning

The temperature in Koh Samui today in the early morning is 28°C.

If you take into account factors such as wind, humidity and other weather conditions, the temperatures can feel like 32°C.

The chance of rain in Koh Samui in the morning is 56%, and the wind will blow at 14km/h.

Noon

The temperature in Koh Samui today at noon time is 29°C and it will feel like 33°C. The humidity will be around 72% with wind speed of 10km/h.

Evening

The temperature in Koh Samui today's evening will get to 29°C.

The chance of rain in Koh Samui in the evening time is 16%, with wind speed of 8km/h.

Night

The night temperature in Koh Samui today is 30°C with a wind speed of 23km/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 moderate rain at times.
What is today's highest and lowest temperature in Koh Samui?
The temperature today in Koh Samui will range between 28° and 29°.
Will it be raining today in Koh Samui?
The chance of rain today in Koh Samui is 70%.
Will it be windy today in Koh Samui?
The wind will blow between 8 Km/h to 23 Km/h today in Koh Samui.
How many hours of sunlight today in Koh Samui?
There will be 9.5 hours of sun today in Koh Samui.
What time is the sunrise and sunset today in Koh Samui?
The sun will rise at 06:01 and set at 18:42.

Clothing recommendation for Koh Samui

Sunday, 21 June 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 06:01 and will set at 18:42. There will be 9.5 hours of sunlight in Koh Samui.

Sunrise
06:01
Sunset
18:42
More about the weather in Koh Samui