Laos (Savannakhet)
September
Weather in Laos for September 2025
Your guide to Laos weather in September - trends and predictions
Until now, September 2025 in Laos has been nearly identical to the historical average, with a temperature of 29.3 °C (showing only a slight deviation of -0.3 °C).
The forecast for the next days in Laos predicts temperatures to be around 29 °C, close to the historical average.
In general, the average temperature in Laos at the beginning of September is 30.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 28.3 °C by the end of September.
Laos experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 467 mm.
Temperatures
Rain 🌧️
0
Dry days
30
Rainy days
0
Snow days
29°/23°
Temperatures
12 km/h
Avg max wind
87 %
Avg humidity
Laos Weather September
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What’s the Weather Like in Laos This September?
Discover the average temperatures and weather trends across Laos’s cities this September.
Temperatures trend during September in Laos
See the weather trend as well as the moving average line
September weather in Laos day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 32° /22° | 10.1 mm | 7 | |
| 2 Sept. |  Moderate or heavy rain shower | 31° /22° | 19.8 mm | 7 | |
| 3 Sept. | Moderate or heavy rain shower | 31° /23° | 12.3 mm | 7 | |
| 4 Sept. | Moderate or heavy rain shower | 31° /23° | 17.5 mm | 7 | |
| 5 Sept. | Light rain shower | 30° /23° | 11.5 mm | 6 | |
| 6 Sept. | Moderate or heavy rain shower | 29° /23° | 17.8 mm | 7 | |
| 7 Sept. | Moderate or heavy rain shower | 30° /23° | 14.2 mm | 7 | |
| 8 Sept. | Moderate or heavy rain shower | 29° /23° | 21.5 mm | 6 | |
| 9 Sept. | Light rain shower | 29° /23° | 18 mm | 6 | |
| 10 Sept. | Moderate or heavy rain shower | 28° /22° | 22 mm | 6 | |
| 11 Sept. | Moderate or heavy rain shower | 30° /23° | 17.2 mm | 7 | |
| 12 Sept. |  Overcast | 29° /23° | 5.4 mm | 6 | |
| 13 Sept. | Overcast | 28° /22° | 8.5 mm | 6 | |
| 14 Sept. |  Mist | 29° /22° | 12.2 mm | 6 | |
| 15 Sept. | Moderate or heavy rain shower | 29° /22° | 6.7 mm | 6 | |
| 16 Sept. | Light rain shower | 29° /22° | 20.6 mm | 6 | |
| 17 Sept. | Light rain shower | 29° /23° | 7.7 mm | 7 | |
| 18 Sept. |  Moderate rain | 31° /23° | 5.4 mm | 2.9 | |
| 19 Sept. |  Heavy rain | 30° /23° | 22.1 mm | 2.7 | |
| 20 Sept. | Moderate rain | 28° /23° | 15.4 mm | 1.4 | |
| 21 Sept. | Moderate rain | 30° /23° | 7.5 mm | 2.9 | |
| 22 Sept. | Moderate rain | 27° /23° | 16.7 mm | 5 | |
| 23 Sept. | Patchy rain possible | 30° /23° | 3.8 mm | 6 | |
| 24 Sept. | Moderate rain | 30° /23° | 11.4 mm | 6 | |
| 25 Sept. | Moderate rain | 29° /23° | 5.5 mm | 5 | |
| 26 Sept. | Patchy rain possible | 26° /23° | 1.7 mm | 5 | |
| 27 Sept. | Patchy rain possible | 25° /22° | 0.5 mm | 5 | |
| 28 Sept. | Patchy rain possible | 28° /22° | 0.6 mm | 5 | |
| 29 Sept. | Patchy rain possible | 30° /22° | 0.2 mm | 6 | |
| 30 Sept. | Moderate rain | 30° /24° | 5.9 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Laos 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 Laos forecast closer to your planned date for the most up-to-date weather information.
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Laos in September - FAQ
What are the expected maximum and minimum temperatures in Laos during September?
During September, expect a variety of temperatures with highs around 29° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Laos during September?
Significant rainfall exceeding 467 mm is expected in Laos during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Laos during September?
The average wind speed in Laos during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Laos
Explore the daily rainfall trends and prepare for Laoss September weather 💧
UV exposure in Laos during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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