Koh Samui Weather in February
February in Koh Samui brings high temperatures, with highs of 29°C (84°F) and nights dropping to 26°C (79°F). It's also the driest month of the year, ideal for those who want to avoid rain.
Rainfall in Koh Samui in February
With the lowest rainfall figures of the year, conditions are ideal for exploring the outdoors. Expect around 5 days of rain based on historical data, with 44 mm (1.7 in) average. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.
Temperature in Koh Samui in February
The temperature in Koh Samui in February is perfect. Daytime highs reach 29°C (84°F), with nights dropping to 26°C (79°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights are warm at 26°C (79°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down.
Sunshine in Koh Samui in February
The city usually sees around 215 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Average water temperature in February
The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Koh Samui's climate page.
Koh Samui Temperature in February
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Water Temperature
28°C (82°F)
Chance of Rain
16%
Precipitation
44 mm (1.7 in)
Rainy days
5 days
Humidity
82%
Sunshine
215 hours
Percentage Sunshine
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Koh Samui typically stay consistent throughout February, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in February
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in February
Historical weather for Koh Samui in February
Browse day-by-day weather records for Koh Samui spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Koh Samui historical weather extremes in February
Based on 44 years of weather observations in Koh Samui between 1982 and 2026, these are the recorded extremes.
- On February 21, 1991, temperatures climbed to 34°C (93°F), marking the warmest February day on record.
- The lowest daytime temperature in February was 25°C (77°F), recorded on February 6, 1996.
- Koh Samui registered its coldest February night on February 3, 2014, with temperatures dropping to 19°C (66°F).
Best Places in Thailand in February
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in February →
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What to Wear in Koh Samui in February
Warm weather calls for comfortable, breathable clothing in February. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. The water temperature sits at about 28°C (82°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Koh Samui in February
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Koh Samui's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Koh Samui climate overview or explore weather in Thailand.
