Ko Samui
10 day weather forecast for Ko Samui
Friday, 6th November 2026, at 13:52
Today
29° 27°
Tomorrow
29° 26°
Sunday
29° 27°
Monday
29° 26°
Tuesday
29° 26°
Wednesday
29° 26°
Thursday
27° 26°
Seemore
Ko Samui Weather Pages
Ko Samui weather forecast
The weather forecast for Ko Samui over the next 5 days indicates very wet conditions with temperatures around 29 °C.
Rain is expected today and will continue at least through Tuesday.
Wind speeds are expected to be breezy, averaging around 16.9 km/h.
Ko Samui 14 days weather forecast
This weeks weather in Ko Samui. Click on a date for detailed forecasts
Fri. 6
29°
27°
10.5 mm
Sat. 7
29°
26°
5.7 mm
Sun. 8
29°
27°
17.1 mm
Mon. 9
29°
26°
18.5 mm
Tue. 10
29°
26°
10.4 mm
Wed. 11
29°
26°
26.3 mm
Thu. 12
27°
26°
36 mm
Fri. 13
27°
26°
21.9 mm
Sat. 14
27°
26°
15.4 mm
Sun. 15
28°
26°
3.5 mm
Mon. 16
28°
27°
2.8 mm
Tue. 17
28°
26°
7.7 mm
Wed. 18
28°
26°
8.6 mm
Thu. 19
28°
26°
19.4 mm
Further Ahead
You can click on date
Access Ko Samui weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Ko Samui long range weather forecast
30 day weather forecast for Ko Samui
Important Notice
Our Ko Samui long range weather forecast is based on historical data analysis rather than real-time forecasting models. While this provides a general outlook, weather conditions can change. We recommend checking the forecast closer to your planned date for the most current information.
Rain Forecast for the Next 14 Days in Ko Samui
A total of 203.8 mm is expected over 14 rainy days. The wettest day is Thursday 12, with 36 mm. Click a day for details.
Ko Samui Wind Speed Forecast Chart
The windiest day is Tuesday 10, with winds up to 36.7 km/h from the E. The calmest day is Monday 16. The average daily maximum is 19.2 km/h.
Fri. 6
16.9 km/h
E · Gentle breeze
Sat. 7
20.2 km/h
E · Moderate breeze
Sun. 8
24.1 km/h
E · Moderate breeze
Mon. 9
34.2 km/h
E · Fresh breeze
Tue. 10
36.7 km/h
E · Fresh breeze
Wed. 11
27.4 km/h
E · Moderate breeze
Thu. 12
20.5 km/h
E · Moderate breeze
Fri. 13
19.4 km/h
E · Gentle breeze
Sat. 14
14 km/h
SE · Gentle breeze
Sun. 15
12.2 km/h
E · Gentle breeze
Mon. 16
8.3 km/h
E · Light breeze
Tue. 17
8.3 km/h
E · Light breeze
Wed. 18
11.5 km/h
E · Light breeze
Thu. 19
14.4 km/h
E · Gentle breeze
CalmLight breezeGentle breezeModerate breezeFresh breeze
Frequently asked questions about the weather in Ko Samui
How warm is it in Ko Samui over the next 14 days?
Over the next two weeks, temperatures in Ko Samui are expected to range from around 26 °C on the coldest nights up to about 29 °C on the warmest days. Use this range to plan what to pack and wear.
Will it rain in Ko Samui in the next two weeks?
Yes - rain is expected on about 14 of the next 14 days in Ko Samui, with roughly 203.8 mm of rainfall in total. It is worth keeping an umbrella or raincoat handy.
How windy is it in Ko Samui?
Maximum wind speeds in Ko Samui are forecast to reach about 36.7 km/h at their peak over the next 14 days.
When is the best time to visit Ko Samui?
For a month-by-month look at temperatures and rainfall, see our best time to visit Ko Samui guide.
How accurate is the 14-day forecast for Ko Samui?
Our Ko Samui forecast uses leading meteorological models and is most reliable over the next few days. Long-range days beyond a week show general trends and can change, so check back closer to the date for updates.
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