Kathmandu
September
Weather in Kathmandu for September 2025
Your guide to Kathmandu weather in September - trends and predictions
In general, the average temperature in Kathmandu at the beginning of September is 26 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 23.9 °C by the end of September.
Kathmandu experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.
Is September a good time to visit Kathmandu? check out the best time to travel to Kathmandu page.
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1
Dry days
29
Rainy days
0
Snow days
25°/17°
Temperatures
6 km/h
Avg max wind
86 %
Avg humidity
Kathmandu in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2  26° | 3  26° | 4 26° | 5 26° | 6  26° | 7 27° |
| 8 26° | 9 26° | 10 24° | 11 25° | 12  26° | 13 27° | 14 25° |
| 15 25° | 16 24° | 17 25° | 18 26° | 19 26° | 20 26° | 21 25° |
| 22 26° | 23 26° | 24 25° | 25 25° | 26 23° | 27 22° | 28 21° |
| 29 25° | 30 26° |
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Temperatures trend during September in Kathmandu
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Patchy light rain with thunder | 25° /18° | 21.6 mm | 6 | |
| 2 Sept. | Moderate or heavy rain shower | 26° /18° | 15.8 mm | 6 | |
| 3 Sept. | Torrential rain shower | 26° /17° | 48.3 mm | 6 | |
| 4 Sept. | Patchy light rain with thunder | 26° /17° | 33.3 mm | 6 | |
| 5 Sept. | Moderate or heavy rain shower | 26° /17° | 17.9 mm | 6 | |
| 6 Sept. | Patchy rain possible | 26° /17° | 10 mm | 6 | |
| 7 Sept. | Moderate or heavy rain shower | 27° /17° | 30.6 mm | 6 | |
| 8 Sept. | Moderate or heavy rain shower | 26° /16° | 7.9 mm | 6 | |
| 9 Sept. | Moderate or heavy rain shower | 26° /17° | 36.5 mm | 6 | |
| 10 Sept. | Light rain shower | 24° /18° | 9.9 mm | 6 | |
| 11 Sept. | Moderate or heavy rain shower | 25° /17° | 23.1 mm | 6 | |
| 12 Sept. | Cloudy | 26° /18° | 6 mm | 6 | |
| 13 Sept. | Moderate or heavy rain shower | 27° /18° | 16 mm | 6 | |
| 14 Sept. | Moderate or heavy rain shower | 25° /17° | 9.4 mm | 6 | |
| 15 Sept. | Moderate or heavy rain shower | 25° /17° | 7 mm | 6 | |
| 16 Sept. | Light rain shower | 24° /16° | 8.9 mm | 5 | |
| 17 Sept. | Patchy rain possible | 25° /17° | 9.2 mm | 6 | |
| 18 Sept. | Light rain shower | 26° /16° | 6.5 mm | 6 | |
| 19 Sept. | Patchy rain possible | 26° /16° | 7.4 mm | 6 | |
| 20 Sept. | Light rain shower | 26° /17° | 11.2 mm | 6 | |
| 21 Sept. | Light rain shower | 25° /18° | 15.4 mm | 6 | |
| 22 Sept. | Light rain shower | 26° /17° | 10.1 mm | 6 | |
| 23 Sept. | Light rain shower | 26° /18° | 17.7 mm | 6 | |
| 24 Sept. | Light rain shower | 25° /17° | 18.2 mm | 6 | |
| 25 Sept. | Light rain shower | 25° /17° | 17.5 mm | 6 | |
| 26 Sept. | Patchy rain possible | 23° /16° | 7.2 mm | 5 | |
| 27 Sept. | Patchy rain possible | 22° /16° | 9.9 mm | 5 | |
| 28 Sept. | Patchy rain possible | 21° /16° | 56.5 mm | 5 | |
| 29 Sept. | Patchy rain possible | 25° /16° | 3.5 mm | 6 | |
| 30 Sept. | Patchy rain possible | 26° /16° | 5 mm | 6 | |
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Important Notice
Our weather forecast for Kathmandu 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 Kathmandu forecast closer to your planned date for the most up-to-date weather information.
Kathmandu in September - FAQ
What are the expected maximum and minimum temperatures in Kathmandu during September?
During September, expect a variety of temperatures with highs around 25° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Kathmandu during September?
Significant rainfall exceeding 477.7 mm is expected in Kathmandu during September, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Kathmandu during September?
The average wind speed in Kathmandu during September is 6 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Kathmandu in September?
As you prepare for your trip to Kathmandu 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 Kathmandu, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- 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
September rainfall patterns in Kathmandu
Explore the daily rainfall trends and prepare for Kathmandus September weather 💧
UV exposure in Kathmandu during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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