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Koh Samui weather by month
Check out Koh Samui weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Koh Samui (°C)
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Max temperature (daytime) | 29 |
29 |
30 |
32 |
32 |
31 |
31 |
31 |
31 |
30 |
29 |
29 |
Min temperature (night-time) | 22 |
23 |
24 |
25 |
25 |
24 |
24 |
24 |
24 |
23 |
23 |
22 |
Heat & Humidity | H |
H |
VH |
VH |
VH |
VH |
VH |
VH |
VH |
H |
H |
H |
Sea temperature | 28 |
28 |
29 |
30 |
30 |
30 |
29 |
29 |
29 |
29 |
28 |
28 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & Daylight in Koh Samui
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Daily hours of sunshine | ||||||||||||
Daily hours of daylight | 12 |
12 |
12 |
12 |
13 |
13 |
13 |
12 |
12 |
12 |
12 |
12 |
UV Index (Maximum) | 11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
10 |
Rainfall in Koh Samui
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Number of days with some rain | 10 |
5 |
5 |
8 |
17 |
16 |
17 |
17 |
17 |
20 |
19 |
13 |
Average monthly rainfall (mm) | 123 |
39 |
54 |
85 |
172 |
118 |
146 |
137 |
141 |
275 |
463 |
188 |
More about Koh Samui
Koh Samui by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Thailand
The climate guide for Thailand (Koh Samui) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Koh Samui?
Koh Samui has a hot tropical climate with a short dry season.
Metric (°C / mm) | Imperial (°F / inches)
Tropical storm risk: Koh Samui, Thailand typhoon season
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Compare Koh Samui with the USA
Below the Koh Samui chart shows average maximum daytime temperature for Koh Samui, Thailand and the USA (Washington).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
Compare more Koh Samui weather >>
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