Ko Samui Weather Today

Temperature, Feels Like, Rain Chance & Hourly Forecast in Ko Samui

Ko Samui temperature today is 29°, feels like 36°, with a humidity level of 84% and wind at 5.54 km/h. Rain chance today is 100%. Use the hourly forecast and 5-day outlook below to plan your day.

Tomorrow in Ko Samui: expect a high of 31° and a low of 28°, with overcast clouds. Rain chance tomorrow is 100%.

light rain
29°
light rain
H: 29° L: 29°
Feels like 36°
AQI: Good (1/5)
Humidity
84%
Dew 26°
Wind speed
5.54 km/h
W
Pressure
1014 hPa
Visibility
10 km
Rain
0.24 mm
Weather Summary
Currently in Ko Samui, expect varied conditions with hot temperatures around 29°, though it feels warmer. Winds are a light breeze. High humidity may make it feel uncomfortable. Stay hydrated and seek shade during peak hours.
Precipitation Probability
100%
13
0%
16
6%
19
29%
22
20%
01
43%
04
33%
07
34%
10
100%
13
13%
16
4%
19
0%
22
20%
01
100%
04
100%
07
0%
10
Evolution
Daily Weather Forecast Evolution (°C)
Lowest temperature
Highest temperature
Temperature Forecast (48h)
32°
Wed
13:00
31°
 
30°
 
28°
 
29°
Thu
01:00
28°
 
28°
 
30°
 
31°
Thu
13:00
30°
 
29°
 
29°
 
29°
Fri
01:00
28°
 
28°
 
28°
 
Hot (≥30°)
Warm
Cool
Cold (<0°)
Weather Map
Sun & Moon
Sunrise
Sunrise
06:08
Sunset
Sunset
18:11
Moon Phase
Waning Gibbous (76%)
Timezone: GMT+05:30
Last updated: Sep 30, 2026 10:17 AM · Data refreshes every 5 min
Location Info
Latitude
Latitude
9.535670
Longitude
Longitude
99.935669
Embed This Weather

Copy the code below to embed Ko Samui weather on your website:

<iframe src="https://nearweather.com/embed/ko-samui-th-1154689" width="350" height="200" frameborder="0" style="border-radius:12px;box-shadow:0 2px 8px rgba(0,0,0,0.1);"></iframe>
More about Ko Samui
Content curated by the NearWeather editorial team · Updated periodically

Climate and Weather in Ko Samui, Thailand

Ko Samui is a beautiful island located in the Gulf of Thailand. It is known for its stunning beaches, crystal-clear waters, and tropical climate. The island experiences a tropical monsoon climate, which means it has two distinct seasons - the wet season and the dry season. Let's explore the climate and weather in Ko Samui throughout the year.

Wet Season (May - October)

The wet season in Ko Samui typically starts in May and lasts until October. During this period, the island experiences high humidity, frequent rain showers, and occasional thunderstorms. The rainfall gradually increases over the months, with September being the wettest month.

Here is a table showing the average precipitation in Ko Samui during the wet season:

Month Average Precipitation (mm)
May 120
June 170
July 170
August 150
September 270
October 240

Despite the rainfall, temperatures during the wet season remain warm and pleasant. The average high temperature ranges from 28°C (82°F) to 32°C (90°F), and the average low temperature ranges from 24°C (75°F) to 26°C (79°F). The sea temperature is also warm, making it suitable for swimming and water activities.

It's important to note that although the wet season brings rain, it doesn't necessarily mean that it rains all day, every day. There are still plenty of sunny days during this period, and the rain showers often occur in short bursts.

Dry Season (November - April)

The dry season in Ko Samui starts in November and lasts until April. This period is characterized by lower humidity, minimal rainfall, and plenty of sunshine. The weather during the dry season is generally more predictable and ideal for outdoor activities.

Here is a table showing the average precipitation in Ko Samui during the dry season:

Month Average Precipitation (mm)
November 90
December 60
January 30
February 30
March 50
April 90

During the dry season, temperatures in Ko Samui remain warm, with average high temperatures ranging from 28°C (82°F) to 31°C (88°F), and average low temperatures ranging from 22°C (72°F) to 24°C (75°F). The sea temperature remains inviting, making it a great time for water activities such as snorkeling and diving.

Best Time to Visit Ko Samui

The best time to visit Ko Samui depends on personal preferences and the type of activities you plan to engage in. If you prefer fewer crowds and lower prices, the wet season may be a good option for you. However, if you want to enjoy sunny days and spend more time on the beach, the dry season is the ideal time to visit.

It's worth mentioning that even during the wet season, the rain showers are usually short-lived, and the island remains lush and green. It's also a great time to witness the beauty of tropical flora and enjoy the refreshing rainforest landscapes.

When planning your visit to Ko Samui, it's always a good idea to check the weather forecast and plan your activities accordingly. Regardless of the season, Ko Samui offers a charming tropical experience with its stunning beaches, vibrant culture, and warm hospitality.

Weather data sourced from OpenWeatherMap. Forecasts are estimates and may differ from actual conditions. For severe weather, consult your local meteorological authority.
FAQ's about Ko Samui
What is the temperature in Ko Samui right now?

The current temperature in Ko Samui is 29°, and it feels like 36°. Today's high is 29° and the low is 29°.

Will it rain in Ko Samui today?

The chance of rain in Ko Samui today is 100%. Current rainfall is 0.24 mm. Check the hourly forecast above for exact timing.

What is the weather in Ko Samui today?

Ko Samui is experiencing light rain with a temperature of 29°. Humidity is at 84% and wind speed is 5.54 km/h from the W.

What is the humidity in Ko Samui today?

Humidity in Ko Samui is 84% right now, with a dew point of 26°. Conditions may feel muggy or uncomfortable.

What is the wind speed in Ko Samui today?

Wind speed in Ko Samui is 5.54 km/h, flowing at 260° W wind direction.

What is the 5-day forecast for Ko Samui?

NearWeather provides a detailed 5-day forecast and 48-hour hourly forecast for Ko Samui. Today's high is 29° and low is 29°, with a 100% chance of rain. Scroll up to view the full day-by-day and hourly breakdown.

What does it feel like in Ko Samui today?

It feels like 36° in Ko Samui today, with 84% cloud cover and 10 km visibility.

Weather in Ko Samui