14-day forecast — Koh Samui
Updated every hour
Sun · Today · 13 Sep
Showers
+28°
+26°
11,1 mm
Mon · Tomorrow · 14 Sep
Showers
+30°
+27°
9,4 mm
Tuesday · 15 Sep
Showers
+30°
+28°
5,4 mm
Wednesday · 16 Sep
Showers
+30°
+28°
11,7 mm
Thursday · 17 Sep
Showers
+29°
+28°
2,7 mm
Friday · 18 Sep
Showers
+28°
+26°
34,2 mm
Saturday · 19 Sep
Showers
+28°
+26°
21,1 mm
Sunday · 20 Sep
Showers
+29°
+26°
7,9 mm
Monday · 21 Sep
Cloudy
+29°
+28°
1,5 mm
Tuesday · 22 Sep
Cloudy
+29°
+28°
2,2 mm
Wednesday · 23 Sep
Showers
+29°
+26°
12,7 mm
Thursday · 24 Sep
Showers
+27°
+26°
24,8 mm
Friday · 25 Sep
Showers
+27°
+26°
3,3 mm
Saturday · 26 Sep
Showers
+28°
+26°
8,7 mm
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 39)
Climate in Koh Samui in April
Normals 8 years · best time to visit · Open-MeteoBest time to visit Koh Samui: January–December. With good weather, April is a recommended month to visit.
| March | April | May | |
|---|---|---|---|
| Average temperature | ▲ 25°C | 26°C | → 26°C |
| Highest temperature | ▲ 28°C | 29°C | → 29°C |
| Lowest temperature | ▲ 23°C | 24°C | → 24°C |
| Sea temperature | ▲ 30,1°C | 31,5°C | ▲ 32,0°C |
| Precipitation | ▲ 41 mm | 97 mm | ▲ 122 mm |
| Days with precipitation | ▲ 11 d | 16 d | ▲ 20 d |
| Humidity | ▼ 75% | 74% | ▲ 80% |
| Sunshine hours per day | ▼ 11,0 h | 10,9 h | ▼ 10,4 h |
| Cloud cover | ▲ 9% | 12% | ▲ 17% |
| UV index (midday) | ▲ 11 | 12 | → 12 |
| Day length | 12:04 | 12:20 | 12:34 |
| Our rating | Perfect | Good | Good |
Temperature day by day in April mean + moving average
Precipitation day by day in April mm
UV index day by day in April 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 +28°, showers, vent 21 km/h. Sur les 7 prochains jours, les températures varient de 26 à 30 °C et 96 mm de pluie. Heure locale (fuseau Asia/Bangkok). Données Open-Meteo et WeatherAPI.