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Weather in Ko Lanta for September 2025

Your guide to Ko Lanta weather in September - trends and predictions
  • In general, the average temperature in Ko Lanta at the beginning of September is 27.9 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 28.1 °C by the end of September.

  • Ko Lanta experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.

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

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
3
Dry days
Average rainy days
27
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/26°
Temperatures
Average wind speed
25 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Ko Lanta in September average weather

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Temperatures trend during September in Ko Lanta

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

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Date Weather Temperatures Rain UV More
1 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
28° /27° 24.9 mm 6
2 Sept. Torrential rain shower
Torrential rain shower
28° /26° 77.6 mm 6
3 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
28° /26° 34.2 mm 6
4 Sept. Torrential rain shower
Torrential rain shower
27° /26° 114.7 mm 6
5 Sept. Torrential rain shower
Torrential rain shower
28° /26° 126.9 mm 6
6 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
28° /27° 19.2 mm 6
7 Sept. Light rain shower
Light rain shower
28° /27° 12.8 mm 6
8 Sept. Partly cloudy
Partly cloudy
29° /27° 7.4 mm 7
9 Sept. Torrential rain shower
Torrential rain shower
28° /27° 13.9 mm 6
10 Sept. Torrential rain shower
Torrential rain shower
28° /26° 32 mm 6
11 Sept. Light rain shower
Light rain shower
28° /26° 3.1 mm 6
12 Sept. Cloudy
Cloudy
28° /27° 2.8 mm 6
13 Sept. Cloudy
Cloudy
28° /26° 14.1 mm 6
14 Sept. Partly cloudy
Partly cloudy
28° /26° 4.5 mm 7
15 Sept. Overcast
Overcast
28° /26° 9.6 mm 6
16 Sept. Light rain shower
Light rain shower
28° /26° 13.4 mm 6
17 Sept. Patchy light drizzle
Patchy light drizzle
28° /27° 11.4 mm 6
18 Sept. Light rain shower
Light rain shower
28° /26° 16.8 mm 6
19 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
28° /27° 22.3 mm 6
20 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
28° /26° 14.5 mm 6
21 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
28° /26° 21.7 mm 6
22 Sept. Torrential rain shower
Torrential rain shower
28° /26° 72 mm 6
23 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
27° /26° 32.3 mm 6
24 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
28° /25° 33.9 mm 6
25 Sept. Light rain shower
Light rain shower
28° /26° 9.2 mm 6
26 Sept. Light rain shower
Light rain shower
28° /26° 11.8 mm 6
27 Sept. Light rain shower
Light rain shower
27° /25° 23.9 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
29° /26° 2.4 mm 6
29 Sept. Patchy rain possible
Patchy rain possible
29° /27° 2.2 mm 7
30 Sept. Patchy rain possible
Patchy rain possible
28° /27° 1.6 mm 6
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Important Notice
Our weather forecast for Ko Lanta 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 Lanta forecast closer to your planned date for the most up-to-date weather information.

Ko Lanta in September - FAQ

What are the expected maximum and minimum temperatures in Ko Lanta during September?
During September, expect a variety of temperatures with highs around 28° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ko Lanta during September?
Significant rainfall exceeding 1246.8 mm is expected in Ko Lanta during September, occurring over more than 27 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Ko Lanta during September?
The average wind speed in Ko Lanta during September is 25 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Ko Lanta in September?

As you prepare for your trip to Ko Lanta 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 Lanta, 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 Lanta?

Get accurate weather forecasts for Ko Lanta, located at latitude 7.534 and longitude 99.086. Stay updated with localized weather information tailored for Ko Lanta.

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