White sandy beaches, emerald-colored sea. It truly felt like a tropical island, and I thoroughly enjoyed it. I can't believe there's such a wonderful place relatively close to Pattaya! Next time, I'd like to stay overnight and explore more parts of the island.
Anonymous User
Couple
Koh Samet Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Koh Samet year round climate
Spring (March–May): Average 28.6–29.9°C, hot climate. March and April are relatively dry, while May sees more rainfall. Common activities: Swimming, sunbathing, snorkeling. Recommended clothing: Light and breathable clothing, swimwear, sun hat, sunglasses.
Summer (June–August): Average 28.9–29.8°C, hot and dry climate with abundant sunshine. Common activities: Swimming, water sports, exploring the island. Recommended clothing: Light and breathable clothing, swimwear, sun hat, sunglasses.
Autumn (September–November): Average 27.6–28.4°C. October has heavier rainfall, while other months are drier. Common activities: Swimming, diving, but be aware of potential rain in October. Recommended clothing: Light and breathable clothing, and rain gear for October.
Winter (December–February): Average 26.5–27.5°C, warm and comfortable climate, dry with little rain. Common activities: Swimming, snorkeling, enjoying the beach. Recommended clothing: Light clothing, a light jacket may be needed in the mornings and evenings.
Koh Samet climatological average
Annual average temperature: approx. 28°C / Annual rainfall: approx. 486 mm / Summer humidity: 60%–70% / Rainiest month: October
Koh Samet monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
26.5°C
0
February
27.5°C
48.5
March
28.6°C
24.9
April
29.9°C
7.5
May
29.9°C
145.2
June
29.8°C
0
July
28.9°C
0
August
29.1°C
0
September
28.4°C
0
October
27.8°C
230
November
27.6°C
28.4
December
26.8°C
2
Koh Samet weather for the next seven days
4/24
Friday
Sunny
30.5°C/28.4°C
4/25
Saturday
Partly Cloudy
30.6°C/28.4°C
4/26
Sunday
Sunny
30.7°C/28.4°C
4/27
Monday
Sunny
30.9°C/28.3°C
4/28
Tuesday
Patchy rain nearby
30.9°C/28.3°C
4/29
Wednesday
Sunny
31.1°C/28.6°C
4/30
Thursday
Patchy rain nearby
30.9°C/29.1°C
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