14-day forecast — Koh Samui
Updated every hour
Tue · Today · 28 Jul
Showers
+29°
+28°
15,9 mm
Wed · Tomorrow · 29 Jul
Showers
+28°
+27°
10,5 mm
Thursday · 30 Jul
Showers
+29°
+27°
3,3 mm
Friday · 31 Jul
Showers
+29°
+27°
4,4 mm
Saturday · 1 Aug
Showers
+29°
+28°
2,9 mm
Sunday · 2 Aug
Partly cloudy
+30°
+28°
1,7 mm
Monday · 3 Aug
Partly cloudy
+30°
+28°
3,4 mm
Tuesday · 4 Aug
Partly cloudy
+30°
+28°
2,1 mm
Wednesday · 5 Aug
Partly cloudy
+30°
+28°
3,6 mm
Thursday · 6 Aug
Showers
+30°
+28°
3,1 mm
Friday · 7 Aug
Partly cloudy
+30°
+28°
1,4 mm
Saturday · 8 Aug
Partly cloudy
+30°
+28°
2,4 mm
Sunday · 9 Aug
Partly cloudy
+31°
+28°
1,0 mm
Monday · 10 Aug
Partly cloudy
+31°
+29°
8%
About Koh Samui
Île tropicale du golfe de Thaïlande, plages et chaleur moite.
CountryThailand
RegionGolfe de Thaïlande
ContinentAsia
Time zoneAsia/Bangkok (+07:00)
Latitude9.5120°
Longitude100.0136°
Air qualityFair (EAQI 26)
Climate in Koh Samui in August
Normals 8 years · best time to visit · Open-MeteoBest time to visit Koh Samui: January–December. With good weather, August is a recommended month to visit.
| July | August | September | |
|---|---|---|---|
| Average temperature | → 26°C | 26°C | ▼ 25°C |
| Highest temperature | → 29°C | 29°C | ▼ 27°C |
| Lowest temperature | ▼ 24°C | 23°C | → 23°C |
| Sea temperature | ▲ 30,7°C | 30,9°C | ▼ 30,1°C |
| Precipitation | ▼ 96 mm | 92 mm | ▲ 131 mm |
| Days with precipitation | ▲ 18 d | 19 d | ▲ 21 d |
| Humidity | ▲ 77% | 79% | ▼ 78% |
| Sunshine hours per day | ▲ 9,1 h | 9,4 h | ▼ 8,9 h |
| Cloud cover | ▼ 28% | 24% | ▲ 27% |
| UV index (midday) | → 12 | 12 | → 12 |
| Day length | 12:37 | 12:26 | 12:11 |
| Our rating | Good | Good | Good |
Temperature day by day in August mean + moving average
Precipitation day by day in August mm
UV index day by day in August midday value, clear-sky
Climate normals calculated from Open-Meteo (ERA5 archive 8 years, sea temperature Marine API). UV estimated from solar elevation.
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Data source
Global weather models — international forecasts
Météo de Koh Samui (Thailand) : conditions actuelles et prévisions à 24 h et 14 jours pour préparer votre voyage. Sur place actuellement, il fait +27°, partly cloudy, vent 34 km/h. Sur les 7 prochains jours, les températures varient de 27 à 30 °C avec 2 belles journées et 42 mm de pluie. Heure locale (fuseau Asia/Bangkok). Données Open-Meteo et WeatherAPI.