Average weather in September in Chaweng Beach (Koh Samui), Thailand

The average minimum temperature (usually the minimum temperature is noted during the night) in Chaweng Beach in September is 25.0°C (77°F). The amount of rain in September is high with an average of 124mm (4.9in). The average maximum daytime temperature lies around 31.8°C (89.24°F). The sun will occasionally show itself with 145 hours of sunshine during the whole month.


So what to wear in September? Visitors traveling to Chaweng Beach should plan on bringing a totally waterproof rain jacket since it will often be raining. Also bring your shorts or a skirt because it can be very warm or even hot.

No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.

For other monthly average weather and what to do in September look at the numbers below.

Monthly Averages in September

Show in Celsius

Min Temperature 77 °F
Max Temperature 89 °F
Chance of Rain 53%
Precipitation 5 in
Rainy Days 16
Sunshine Hours 145

Where to stay in Chaweng Beach

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in .

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
6/10
Outdoor sports
7/10

Weather Forecasts for Chaweng Beach (Koh Samui)

MON Dec 06
81°F | 79°F

Partly cloudy

TUE Dec 07
81°F | 79°F

Patchy rain possible

WED Dec 08
81°F | 79°F

Patchy rain possible

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Chaweng Beach.

Our site offers climate and forecast data for almost all countries in the world. Are you going to Thailand? On this website you can find historical weather averages for many cities in Thailand. Not sure yet where to go? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.