Slovenia (Ljubljana)
September
Weather in Slovenia for September 2026
Your guide to Slovenia weather in September - trends and predictions
In general, the average temperature in Slovenia at the beginning of September is 25.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.7 °C by the end of September.
With an average of 5 rainy days, Slovenia experiences minimal rainfall in September.
Temperatures
Rain 🌧️
25
Dry days
5
Rainy days
0
Snow days
24°/8°
Temperatures
10 km/h
Avg max wind
80 %
Avg humidity
Slovenia Weather September
Move between months or click on a day
What’s the Weather Like in Slovenia This September?
Discover the average temperatures and weather trends across Slovenia’s cities this September.
Temperatures trend during September in Slovenia
See the weather trend as well as the moving average line
September weather in Slovenia day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Mist | 27° /13° | 0 mm | 6 | |
| 2 Sept. |  Patchy rain possible | 27° /14° | 0.6 mm | 6 | |
| 3 Sept. | Mist | 25° /13° | 2.9 mm | 6 | |
| 4 Sept. |  Overcast | 25° /12° | 0.3 mm | 6 | |
| 5 Sept. |  Sunny | 26° /12° | 3.7 mm | 6 | |
| 6 Sept. | Sunny | 23° /11° | 1.6 mm | 5 | |
| 7 Sept. | Sunny | 24° /11° | 0 mm | 6 | |
| 8 Sept. | Sunny | 26° /12° | 0.2 mm | 6 | |
| 9 Sept. | Sunny | 23° /12° | 3.8 mm | 5 | |
| 10 Sept. | Sunny | 21° /11° | 23.3 mm | 5 | |
| 11 Sept. | Sunny | 23° /11° | 5.2 mm | 6 | |
| 12 Sept. | Light rain shower | 21° /9° | 23.1 mm | 5 | |
| 13 Sept. |  Partly cloudy | 19° /10° | 4.1 mm | 5 | |
| 14 Sept. | Mist | 19° /10° | 4.1 mm | 4 | |
| 15 Sept. | Fog | 20° /9° | 0.1 mm | 5 | |
| 16 Sept. | Mist | 19° /8° | 8 mm | 4 | |
| 17 Sept. | Fog | 18° /8° | 1.1 mm | 4 | |
| 18 Sept. | Mist | 21° /9° | 0.1 mm | 5 | |
| 19 Sept. | Light rain shower | 20° /10° | 2.4 mm | 5 | |
| 20 Sept. | Light rain shower | 21° /10° | 1 mm | 5 | |
| 21 Sept. | Mist | 23° /10° | 0.2 mm | 5 | |
| 22 Sept. | Light rain shower | 22° /10° | 4.6 mm | 5 | |
| 23 Sept. | Light rain shower | 18° /10° | 7.6 mm | 4 | |
| 24 Sept. | Light rain shower | 16° /11° | 9.2 mm | 4 | |
| 25 Sept. | Light rain shower | 18° /9° | 3 mm | 4 | |
| 26 Sept. | Fog | 19° /9° | 1 mm | 4 | |
| 27 Sept. | Partly cloudy | 19° /10° | 1.7 mm | 5 | |
| 28 Sept. | Sunny | 19° /7° | 2.3 mm | 5 | |
| 29 Sept. | Sunny | 18° /7° | 0.2 mm | 5 | |
| 30 Sept. |  Cloudy | 15° /6° | 1.4 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Slovenia 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 Slovenia forecast closer to your planned date for the most up-to-date weather information.
Change Month
Slovenia in September - FAQ
What are the expected maximum and minimum temperatures in Slovenia during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Slovenia during September?
Significant rainfall exceeding 186.8 mm is expected in Slovenia during September, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Slovenia during September?
The average wind speed in Slovenia during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Slovenia
Explore the daily rainfall trends and prepare for Slovenias September weather 💧
UV exposure in Slovenia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Regions in Slovenia
Choose a region for an accurate weather forecasts
Top locations in Slovenia
Select a location for an accurate weather forecast
More Locations Quick links
More Slovenia weather pages
You are here
Where is Slovenia?Get accurate weather forecasts for Slovenia, located at latitude 46.051 and longitude 14.505. Stay updated with localized weather information tailored for Slovenia.
Found a mistake?
We appreciate your attention to details. Tell us here.