16-Day Forecast
Wed
3 Jun
28°C
Daytime High
30.4°C sea
23°C
Overnight Low
☀☀☀○○
6.3h sun
Today
4 Jun
28°C
Daytime High
30.4°C sea
24°C
Overnight Low
☀☀☀☀☀
9.1h sun
Fri
5 Jun
28°C
Daytime High
30.5°C sea
24°C
Overnight Low
☀☀☀☀☀
10.6h sun
Sat
6 Jun
29°C
Daytime High
30.6°C sea
24°C
Overnight Low
☀☀☀☀○
8.5h sun
Sun
7 Jun
29°C
Daytime High
30.9°C sea
23°C
Overnight Low
☀☀☀☀☀
11.2h sun
Mon
8 Jun
29°C
Daytime High
31°C sea
23°C
Overnight Low
☀☀☀☀☀
10.9h sun
Tue
9 Jun
28°C
Daytime High
30.9°C sea
23°C
Overnight Low
☀☀☀☀☀
9.1h sun
Wed
10 Jun
30°C
Daytime High
31°C sea
25°C
Overnight Low
☀☀☀☀☀
12.5h sun
Thu
11 Jun
29°C
Daytime High
31°C sea
23°C
Overnight Low
☀☀☀☀☀
11.8h sun
Fri
12 Jun
30°C
Daytime High
31.2°C sea
24°C
Overnight Low
☀☀☀☀☀
12.6h sun
Sat
13 Jun
29°C
Daytime High
~31°C sea
24°C
Overnight Low
☀☀☀☀☀
10.1h sun
Sun
14 Jun
29°C
Daytime High
~31°C sea
24°C
Overnight Low
☀☀☀☀☀
10.4h sun
Mon
15 Jun
29°C
Daytime High
~31°C sea
23°C
Overnight Low
☀☀☀☀☀
10.8h sun
Tue
16 Jun
29°C
Daytime High
~31°C sea
24°C
Overnight Low
☀☀☀☀☀
9.9h sun
Wed
17 Jun
30°C
Daytime High
~31°C sea
25°C
Overnight Low
☀☀☀☀☀
12.6h sun
Thu
18 Jun
27°C
Daytime High
~31°C sea
25°C
Overnight Low
☀☀☀☀☀
12.6h sun
☀ = sunshine score · °C high / low · hours of sunshine shown below
About Koh Samui
Koh Samui in Thailand stands out as one of Southeast Asia's most captivating tropical destinations, offering the perfect combination of pristine beaches, vibrant culture, and year-round sunshine that makes it ideal for anyone seeking an authentic island escape. Whether you're a couple looking for romance, a family wanting adventure, or a solo traveller seeking relaxation and connection, this stunning island delivers unforgettable experiences against a backdrop of crystal-clear waters and lush coconut groves. The destination has earned its reputation as a premier sunshine holiday hotspot thanks to its consistently warm climate and diverse range of activities that cater to every type of traveller.
The climate in Koh Samui, Thailand offers warm, tropical conditions throughout the year, though temperatures and conditions do vary by season. During the peak summer months, average temperatures reach around 30°C, while the winter period sees slightly cooler averages of 24°C, creating consistently pleasant conditions comparable to the Mediterranean climate of southern Europe. The sea temperature peaks at approximately 32°C during warmer months, making it ideal for swimming and water activities. The island experiences two distinct seasons: the dry season brings sunny skies and lower humidity, while the monsoon season from October to November can bring rainfall, though the island still receives plenty of sunshine during this period.
The best time to visit Koh Samui aligns with the warmest and sunniest months from December through March, when you'll experience peak sunshine, minimal rainfall, and the most comfortable conditions for beach activities and exploration. This period represents the ideal window for holidays in Koh Samui weather-wise, though the island remains attractive year-round for budget-conscious travellers and those seeking fewer crowds during shoulder seasons.
Koh Samui weather creates the perfect backdrop for exploring a remarkable array of attractions and experiences. Discover the iconic Big Buddha statue, explore vibrant night markets filled with street food, relax at world-class spas, or embrace adventure through snorkelling, diving, and jungle treks. The island's culinary scene showcases authentic Thai cuisine alongside international dining, while beach clubs and traditional fishing villages offer contrasting experiences of island life.
Getting to Koh Samui is straightforward, with direct flights available from Singapore, the UAE, and Australia. Travellers from the United Kingdom, Ireland, Germany, Netherlands, France, New Zealand, South Africa, the United States, Canada, and numerous European destinations including Sweden, Denmark, Finland, Spain, Italy, Norway, Belgium, Switzerland, and Austria can access the island via convenient one-stop connections, making it easily accessible for international visitors planning their next tropical getaway.