Ljubljana
September
Weather in Ljubljana for September 2025
Your guide to Ljubljana weather in September - trends and predictions
In general, the average temperature in Ljubljana at the beginning of September is 26 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.1 °C by the end of September.
Ljubljana in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 90.6 mm.
Temperatures
Rain 🌧️
13
Dry days
17
Rainy days
0
Snow days
21°/10°
Temperatures
10 km/h
Avg max wind
79 %
Avg humidity
Ljubljana in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2 28° | 3 27° | 4  25° | 5  25° | 6 24° | 7 25° |
| 8 26° | 9 22° | 10 24° | 11 25° | 12  21° | 13 17° | 14 18° |
| 15 18° | 16 20° | 17 18° | 18 21° | 19  18° | 20 18° | 21 21° |
| 22 21° | 23 19° | 24  17° | 25 18° | 26 21° | 27 21° | 28 20° |
| 29 19° | 30  18° |
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Temperatures trend during September in Ljubljana
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. | Mist | 28° /13° | 0 mm | 7 | |
| 2 Sept. | Mist | 28° /14° | 0 mm | 7 | |
| 3 Sept. | Mist | 27° /13° | 4.2 mm | 6 | |
| 4 Sept. | Overcast | 25° /12° | 0.4 mm | 6 | |
| 5 Sept. | Sunny | 25° /12° | 3.7 mm | 6 | |
| 6 Sept. | Sunny | 24° /11° | 2.3 mm | 6 | |
| 7 Sept. | Sunny | 25° /12° | 0 mm | 6 | |
| 8 Sept. | Sunny | 26° /12° | 0.2 mm | 7 | |
| 9 Sept. | Sunny | 22° /12° | 5.6 mm | 6 | |
| 10 Sept. | Sunny | 24° /11° | 0.2 mm | 6 | |
| 11 Sept. | Sunny | 25° /11° | 0.2 mm | 6 | |
| 12 Sept. | Partly cloudy | 21° /9° | 31.9 mm | 6 | |
| 13 Sept. | Partly cloudy | 17° /8° | 5.5 mm | 5 | |
| 14 Sept. | Mist | 18° /9° | 3.7 mm | 4 | |
| 15 Sept. | Fog | 18° /8° | 0.2 mm | 5 | |
| 16 Sept. | Mist | 20° /8° | 1.5 mm | 5 | |
| 17 Sept. | Mist | 18° /8° | 1.7 mm | 4 | |
| 18 Sept. | Mist | 21° /9° | 0.1 mm | 5 | |
| 19 Sept. | Light rain shower | 18° /10° | 3.6 mm | 5 | |
| 20 Sept. | Light rain shower | 18° /10° | 1.5 mm | 4 | |
| 21 Sept. | Patchy rain possible | 21° /10° | 0.3 mm | 5 | |
| 22 Sept. | Light rain shower | 21° /10° | 6.9 mm | 5 | |
| 23 Sept. | Light rain shower | 19° /9° | 3.7 mm | 5 | |
| 24 Sept. | Light drizzle | 17° /11° | 5.2 mm | 4 | |
| 25 Sept. | Patchy rain possible | 18° /9° | 1.4 mm | 4 | |
| 26 Sept. | Fog | 21° /9° | 0.1 mm | 5 | |
| 27 Sept. | Partly cloudy | 21° /12° | 2.6 mm | 5 | |
| 28 Sept. | Sunny | 20° /8° | 3.5 mm | 5 | |
| 29 Sept. | Sunny | 19° /7° | 0.2 mm | 5 | |
| 30 Sept. | Cloudy | 18° /6° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Ljubljana 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 Ljubljana forecast closer to your planned date for the most up-to-date weather information.
Ljubljana in September - FAQ
What are the expected maximum and minimum temperatures in Ljubljana during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Ljubljana during September?
Moderate rainfall is anticipated in Ljubljana during September, with a total of 90.6 mm spread over approximately 17 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Ljubljana during September?
The average wind speed in Ljubljana during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Ljubljana
Explore the daily rainfall trends and prepare for Ljubljanas September weather 💧
UV exposure in Ljubljana during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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