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Weather in Ko Lanta for September 2025

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

    Temperatures

  • Until now, September 2025 in Ko Lanta has been nearly identical to the historical average, with a temperature of 27.9 °C (showing only a slight deviation of -0.2 °C).

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

  • In general, the average temperature in Ko Lanta at the beginning of September is 28.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 28.9 °C by the end of September.

    • Rain 🌧️

  • Ko Lanta experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 786.9 mm.

    • More

  • 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
0
Dry days
Average rainy days
30
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/26°
Temperatures
Average wind speed
26 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Ko Lanta Weather September

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

Temperatures trend during September in Ko Lanta

See the weather trend as well as the moving average line

September weather in Ko Lanta day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 28° /27° 20.9 mm 6
2 Sept. Light rain shower
Light rain shower
 28° /26° 56.6 mm 6
3 Sept. Light rain shower
Light rain shower
 28° /26° 29.6 mm 6
4 Sept. Torrential rain shower
Torrential rain shower
 28° /26° 79 mm 6
5 Sept. Light rain shower
Light rain shower
 28° /26° 87.5 mm 6
6 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /27° 13 mm 6
7 Sept. Light rain shower
Light rain shower
 29° /27° 10.3 mm 6
8 Sept. Light rain shower
Light rain shower
 29° /27° 7.7 mm 6
9 Sept. Torrential rain shower
Torrential rain shower
 28° /26° 9.3 mm 6
10 Sept. Light rain shower
Light rain shower
 28° /26° 21.4 mm 6
11 Sept. Light rain shower
Light rain shower
 28° /26° 2.1 mm 6
12 Sept. Light rain shower
Light rain shower
 28° /27° 4.6 mm 6
13 Sept. Light rain shower
Light rain shower
 28° /26° 16.4 mm 6
14 Sept. Light rain shower
Light rain shower
 28° /26° 6.9 mm 6
15 Sept. Overcast
Overcast
 28° /26° 9.6 mm 6
16 Sept. Moderate rain
Moderate rain
 28° /27° 15.7 mm 2.2
17 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 2.2 mm 2.7
18 Sept. Moderate rain
Moderate rain
 28° /28° 6.6 mm 2.5
19 Sept. Moderate rain
Moderate rain
 29° /28° 5.4 mm 2.8
20 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 1.7 mm 2.5
21 Sept. Partly cloudy
Partly cloudy
 29° /28° 0 mm 7
22 Sept. Partly cloudy
Partly cloudy
 28° /28° 0 mm 7
23 Sept. Partly cloudy
Partly cloudy
 29° /28° 0 mm 7
24 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 0.8 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 1.8 mm 6
26 Sept. Partly cloudy
Partly cloudy
 29° /27° 0 mm 7
27 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 0.5 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 0.4 mm 6
29 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 3.6 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 28° /27° 1.6 mm 6
Next
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.
Change Month
‹
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Ko Lanta weather in September vs August vs October

Compare September weather in Ko Lanta with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures28°/27°28°/26°28°/27°
Rainfall274 mm787 mm341 mm
Wind20.1 km/h25.8 km/h20 km/h
Humidity75%77%76%
Rainy days27 days30 days30 days
Dry days4 days0 days1 days

Planning a trip to Ko Lanta? Discover the best time to visit

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 786.9 mm is expected in Ko Lanta during September, occurring over more than 30 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 26 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

September rainfall patterns in Ko Lanta

Explore the daily rainfall trends and prepare for Ko Lantas September weather 💧

UV exposure in Ko Lanta during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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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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