Weather

Bangkok Pattaya Phuket Koh Samui Chiang Mai

Weather now in Koh Samui

Updated: Jul 20, 18:38 Thailand time

28° ⛅

Partly cloudy. Feels like 31°C.

Humidity
58%
Cloud cover
70%
Wind
5 km/h
Rain now
0 mm

16-day weather calendar

Forecast-style calendar based on available API data.

Sun
Mon
Tue
Wed
Thu
Fri
Sat
20 Jul
🌦️
30° 25°
Rain: 57% · 0.2 mm
21 Jul
🌦️
31° 24°
Rain: 65% · 0.7 mm
22 Jul
🌦️
31° 23°
Rain: 72% · 4.9 mm
23 Jul
⛈️
29° 23°
Rain: 75% · 5.3 mm
24 Jul
🌦️
25° 22°
Rain: 72% · 11.5 mm
25 Jul
⛈️
27° 23°
Rain: 55% · 7 mm
26 Jul
⛈️
27° 23°
Rain: 73% · 6.6 mm
27 Jul
🌦️
26° 23°
Rain: 80% · 13.6 mm
28 Jul
🌦️
24° 22°
Rain: 92% · 20.4 mm
29 Jul
🌦️
25° 22°
Rain: 90% · 17 mm
30 Jul
🌦️
26° 23°
Rain: 76% · 4.4 mm
31 Jul
🌦️
27° 23°
Rain: 78% · 5.4 mm
1 Aug
🌦️
27° 23°
Rain: 73% · 0.6 mm
2 Aug
🌦️
27° 22°
Rain: 76% · 11.4 mm
3 Aug
🌦️
27° 22°
Rain: 71% · 11 mm
4 Aug
🌦️
27° 23°
Rain: 55% · 9.55 mm

Seasonal travel notes for Koh Samui

Current season
Mixed season
Most popular travel months
January to April

Weather can vary, but that does not make it a bad time to visit. Plan with flexibility and keep backup indoor or short-distance options.

Thailand has no bad seasons — only different travel styles. Koh Samui has a different weather pattern from Phuket, so planning by region matters.

Same period last year in Koh Samui

Historical weather from 2025-07-20 to 2025-08-04. Updated: Jul 20, 18:38 Thailand time.

Sun
Mon
Tue
Wed
Thu
Fri
Sat
20 Jul
🌦️
29° 24°
Rain: 0.9 mm · Wind: 27 km/h
21 Jul
🌦️
30° 24°
Rain: 0.1 mm · Wind: 25 km/h
22 Jul
☁️
31° 25°
Rain: 0 mm · Wind: 29 km/h
23 Jul
☁️
32° 25°
Rain: 0 mm · Wind: 28 km/h
24 Jul
☁️
33° 24°
Rain: 0 mm · Wind: 22 km/h
25 Jul
☁️
33° 25°
Rain: 0 mm · Wind: 20 km/h
26 Jul
☁️
33° 25°
Rain: 0 mm · Wind: 21 km/h
27 Jul
🌦️
30° 25°
Rain: 0.4 mm · Wind: 20 km/h
28 Jul
☁️
32° 25°
Rain: 0 mm · Wind: 21 km/h
29 Jul
🌦️
30° 25°
Rain: 0.9 mm · Wind: 22 km/h
30 Jul
☁️
31° 25°
Rain: 0 mm · Wind: 23 km/h
31 Jul
🌦️
32° 25°
Rain: 1.6 mm · Wind: 18 km/h
1 Aug
🌧️
31° 24°
Rain: 6.8 mm · Wind: 12 km/h
2 Aug
🌦️
31° 24°
Rain: 0.7 mm · Wind: 13 km/h
3 Aug
🌧️
30° 22°
Rain: 14.5 mm · Wind: 11 km/h
4 Aug
🌦️
32° 25°
Rain: 0.1 mm · Wind: 19 km/h

Historical values are based on archived weather datasets and may differ from observations at a specific local station.