September Rainfall and Precipitation in Koh Samui
Koh Samui Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Koh Samui - and find the best time to visit. See also: Koh Samui weather by month.
Best Places to Visit in Koh Samui in September
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Koh Samui.
Monthly precipitation
0 mm (0 in) dry → 150 mm (5.9 in) wet
Marker color shows total monthly precipitation in September: pale blue is dry, deep blue is wet.
Koh Samui precipitation in September: frequently asked questions
How much rainfall does Koh Samui, Thailand receive in September?
With an average of 162 mm (6.4 in) of rain in September, Chaweng Beach's weather becomes notably unpredictable due to the frequent downpours.
How many days does it rain in Koh Samui, Thailand in September?
On average, Chaweng Beach has about 18 days days of rain in September.
Is September part of the rainy season in Koh Samui, Thailand?
Not really. September is outside the wettest stretch of the year in Koh Samui, Thailand.
What is the wettest city in September in Koh Samui, Thailand?
In our database, Suratthani stands out as having an average rainfall level of 208 mm (8.2 in), making it the wettest location.
What is the driest city in September in Koh Samui, Thailand?
The driest place is Laem Set Beach with an average rainfall of 143 mm (5.6 in) according to our data.
Interested in more climate information?
We have much more information about the climate in Koh Samui.
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