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Weather in Ko Samui for September 2024

Your guide to Ko Samui weather in September - trends and predictions

  • Until now, September 2024 in Ko Samui has been nearly identical to the historical average, with a temperature of 28.8 °C (showing only a slight deviation of 0.2 °C).

  • The forecast for the next days in Ko Samui predicts temperatures to be around 29 °C, close to the historical average.

  • In general, the average temperature in Ko Samui at the beginning of September is 28.6 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 28.6 °C by the end of September.

  • Ko Samui experiences an exceptionally high level of rainfall in September, with more than 20 rainy days on average.

  • Is September a good time to visit Ko Samui? check out the best time to travel to Ko Samui page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
6
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/27°
Temperatures
Average wind speed
27 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Ko Samui in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Moderate or heavy rain shower
29°
2
Moderate or heavy rain shower
28°
3
Light rain shower
28°
4
Light rain shower
28°
5
Moderate or heavy rain shower
29°
6
Light rain shower
29°
7
Cloudy
29°
8
Overcast
29°
9
Patchy rain possible
29°
10
Light rain shower
29°
11
Patchy rain possible
29°
12
Cloudy
29°
13
Partly cloudy
29°
14
Moderate or heavy rain shower
28°
15
Overcast
28°
16
Light rain shower
28°
17
Light rain shower
28°
18
Patchy rain possible
29°
19
Moderate rain
28°
20
Patchy rain possible
29°
21
Patchy rain possible
30°
22
Patchy rain possible
30°
23
Patchy rain possible
30°
24
Patchy rain possible
30°
25
Patchy rain possible
29°
26
Patchy rain possible
29°
27
Patchy rain possible
29°
28
Patchy rain possible
28°
29
Moderate rain
27°
30
Patchy rain possible
28°
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Temperatures trend during September in Ko Samui

See the weather trend as well as the moving average line
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September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /27° 10.2 mm 6
2 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /27° 6.5 mm 6
3 Sept. Light rain shower
Light rain shower
 28° /26° 5 mm 6
4 Sept. Light rain shower
Light rain shower
 28° /27° 6.6 mm 6
5 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /26° 24.6 mm 7
6 Sept. Light rain shower
Light rain shower
 29° /27° 7.4 mm 6
7 Sept. Cloudy
Cloudy
 29° /27° 2 mm 6
8 Sept. Overcast
Overcast
 29° /28° 0.9 mm 6
9 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 1 mm 7
10 Sept. Light rain shower
Light rain shower
 29° /27° 6 mm 6
11 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 0.6 mm 7
12 Sept. Cloudy
Cloudy
 29° /27° 0.3 mm 6
13 Sept. Partly cloudy
Partly cloudy
 29° /27° 3.6 mm 7
14 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /26° 6.4 mm 6
15 Sept. Overcast
Overcast
 28° /26° 1.6 mm 6
16 Sept. Light rain shower
Light rain shower
 28° /26° 5 mm 6
17 Sept. Light rain shower
Light rain shower
 28° /27° 3.2 mm 6
18 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 4.8 mm 6
19 Sept. Moderate rain
Moderate rain
 28° /27° 7.4 mm 10
20 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 2.2 mm 6
21 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 0.7 mm 11
22 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 1.5 mm 11
23 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 0.6 mm 10
24 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 0.9 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 2.5 mm 6
26 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 1.3 mm 6
27 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 3.3 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 28° /27° 3.2 mm 6
29 Sept. Moderate rain
Moderate rain
 27° /27° 5.6 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 28° /27° 1.5 mm 6
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Important Notice
Our weather forecast for Ko Samui in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ko Samui forecast closer to your planned date for the most up-to-date weather information.

Ko Samui in September - FAQ

What are the expected maximum and minimum temperatures in Ko Samui during September?
During September, expect a variety of temperatures with highs around 28° and lows near 27°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ko Samui during September?
Significant rainfall exceeding 258.1 mm is expected in Ko Samui during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Ko Samui during September?
The average wind speed in Ko Samui during September is 27 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Ko Samui in September?

As you prepare for your trip to Ko Samui in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Ko Samui, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips

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Location coordinates Where is Ko Samui?

Get accurate weather forecasts for Ko Samui, located at latitude 9.536 and longitude 99.936. Stay updated with localized weather information tailored for Ko Samui.

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