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Overcast

Koh Samui

Thailand

31°C

Today's high

26°C Tonight's low

Overcast

It is currently night time there

Sunrise: 06:06Sunset: 18:459pm: 27°C

Sea temperature: 31.3°C

We Say

Escape to Koh Samui where endless golden rays kiss pristine beaches and azure waters embrace your soul. Here, the sun never stops its generous dance, wrapping you in warmth from dawn till dusk as palm trees sway in tropical bliss.

16-Day Forecast

Today

10 Jul

Light drizzle

31°C

Daytime High

31.3°C sea

26°C

Overnight Low

☀☀☀☀☀

12.3h sun

Sat

11 Jul

Light drizzle

31°C

Daytime High

31.2°C sea

25°C

Overnight Low

☀☀☀☀☀

11.8h sun

Sun

12 Jul

Light drizzle

29°C

Daytime High

31°C sea

24°C

Overnight Low

☀☀☀☀☀

9.5h sun

Mon

13 Jul

Rain showers

26°C

Daytime High

30.7°C sea

23°C

Overnight Low

○○○○

1h sun

Tue

14 Jul

Light drizzle

28°C

Daytime High

30.4°C sea

22°C

Overnight Low

☀☀☀☀

8.3h sun

Wed

15 Jul

Thunderstorm

29°C

Daytime High

30.8°C sea

24°C

Overnight Low

☀☀☀☀☀

11.4h sun

Thu

16 Jul

Light drizzle

28°C

Daytime High

30.8°C sea

24°C

Overnight Low

☀☀☀☀☀

10.1h sun

Fri

17 Jul

Light drizzle

28°C

Daytime High

31°C sea

24°C

Overnight Low

☀☀☀☀

8.9h sun

Sat

18 Jul

Light drizzle

29°C

Daytime High

~30.7°C sea

24°C

Overnight Low

☀☀☀☀☀

12.5h sun

Sun

19 Jul

Light drizzle

27°C

Daytime High

~30.7°C sea

24°C

Overnight Low

☀☀☀☀☀

12.5h sun

Mon

20 Jul

Light drizzle

29°C

Daytime High

~30.7°C sea

24°C

Overnight Low

☀☀☀☀☀

9.7h sun

Tue

21 Jul

Light drizzle

28°C

Daytime High

~30.7°C sea

24°C

Overnight Low

☀☀☀☀☀

10h sun

Wed

22 Jul

Light drizzle

28°C

Daytime High

~30.7°C sea

23°C

Overnight Low

☀☀☀☀☀

10.4h sun

Thu

23 Jul

Light drizzle

28°C

Daytime High

~30.7°C sea

23°C

Overnight Low

☀☀☀☀☀

10.9h sun

Fri

24 Jul

Light drizzle

29°C

Daytime High

~30.7°C sea

23°C

Overnight Low

☀☀☀☀☀

11.7h sun

Sat

25 Jul

Mainly clear

~28.7°C

Daytime High

~30.7°C sea

~23.6°C

Overnight Low

☀☀☀☀

8.6h sun

hist. avg

☀ = sunshine score · °C high / low · hours of sunshine shown below

About Koh Samui

Koh Samui in Thailand stands as one of Southeast Asia's most captivating tropical island destinations, offering the perfect blend of pristine beaches, vibrant culture, and year-round sunshine that makes it an ideal choice for anyone seeking an unforgettable holiday. This crescent-shaped island, nestled in the Gulf of Thailand, has earned its reputation as a premier vacation spot thanks to its stunning natural beauty, world-class hospitality, and the kind of warm, welcoming atmosphere that keeps travelers returning year after year. Whether you're dreaming of lazy beach days, underwater adventures, or immersive cultural experiences, Koh Samui delivers the quintessential tropical holiday that many people envision when planning their escape from colder climates.

The climate in Koh Samui is consistently warm throughout the year, with summer temperatures averaging around 30°C during peak season and winter months settling at a pleasant 24°C. The sea temperature peaks at approximately 32°C, creating swimming conditions comparable to the warmest Mediterranean spots like southern Spain or the Canary Islands, yet with the added tropical character that makes Thailand truly special. The island experiences three distinct seasons, though even during the cooler months, temperatures remain warm enough for beach activities and water sports. Humidity is typically high year-round, characteristic of tropical climates, and brief afternoon showers are common though rarely spoil extended periods of sunshine. The consistent warmth means that holidays in Koh Samui suit everyone from families seeking reliable weather for children to couples desiring romantic beachside evenings, and solo travelers eager to enjoy water-based adventures.

The best time to visit Koh Samui weather-wise falls between December and September, when the island enjoys its warmest and sunniest conditions, making these months ideal for maximizing your beach time and outdoor activities. If planning holidays in Koh Samui specifically for the absolute peak sunshine and warmth, aim for the months between May and October when temperatures are at their highest. Getting to Koh Samui in Thailand is remarkably convenient, with direct flights available from Singapore, the United Arab Emirates, and Australia. Travelers from further afield will find efficient one-stop connections available from the United Kingdom, Ireland, Germany, Netherlands, France, New Zealand, South Africa, United States, Canada, and various Northern European destinations including Sweden, Denmark, Finland, Norway, and others. Once on the island, visitors can explore spectacular attractions including the iconic Big Buddha temple, relax at some of Asia's most beautiful beaches, indulge in authentic Thai cuisine at beachfront restaurants, and experience vibrant night markets. Adventure seekers can enjoy snorkeling, diving, kayaking, and jungle trekking, ensuring that Koh Samui offers something memorable for every type of traveler.