Slovenia (Ljubljana)
September
Weather in Slovenia for September 2027
Your guide to Slovenia weather in September - trends and predictions
In general, the average temperature in Slovenia at the beginning of September is 25.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.7 °C by the end of September.
Slovenia experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 127.5 mm.
Is September a good time to visit Slovenia? check out the best time to travel to Slovenia page.
Temperatures
Rain 🌧️
More
20
Dry days
10
Rainy days
0
Snow days
21°/11°
Temperatures
9 km/h
Avg max wind
80 %
Avg humidity
Slovenia Weather September
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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
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 26° /14° | 0 mm | 6 | |
| 2 Sept. |  Patchy rain possible | 26° /15° | 0.5 mm | 5 | |
| 3 Sept. | Patchy rain possible | 26° /14° | 2.2 mm | 6 | |
| 4 Sept. |  Overcast | 26° /13° | 0.2 mm | 6 | |
| 5 Sept. |  Light rain | 26° /14° | 3.3 mm | 6 | |
| 6 Sept. | Patchy rain possible | 23° /12° | 1.2 mm | 6 | |
| 7 Sept. | Sunny | 24° /12° | 0 mm | 6 | |
| 8 Sept. | Sunny | 26° /13° | 0.1 mm | 6 | |
| 9 Sept. | Light rain | 23° /13° | 5 mm | 5 | |
| 10 Sept. |  Heavy rain | 20° /11° | 39.7 mm | 4 | |
| 11 Sept. | Light rain | 21° /11° | 9.5 mm | 5 | |
| 12 Sept. |  Moderate rain | 21° /10° | 17.3 mm | 5.9 | |
| 13 Sept. | Light rain | 20° /10° | 3 mm | 5 | |
| 14 Sept. | Light rain | 20° /11° | 3.9 mm | 4 | |
| 15 Sept. |  Fog | 20° /10° | 0.1 mm | 5 | |
| 16 Sept. | Light rain | 20° /9° | 6 mm | 5 | |
| 17 Sept. | Light rain | 17° /9° | 5.1 mm | 3 | |
| 18 Sept. | Patchy rain possible | 21° /10° | 1 mm | 4 | |
| 19 Sept. | Light rain | 20° /11° | 3.1 mm | 4 | |
| 20 Sept. | Light rain shower | 21° /11° | 0.8 mm | 5 | |
| 21 Sept. | Mist | 21° /11° | 0.2 mm | 4 | |
| 22 Sept. | Light rain | 21° /10° | 3.5 mm | 5 | |
| 23 Sept. | Light rain | 18° /10° | 5.7 mm | 4 | |
| 24 Sept. | Light rain | 16° /10° | 8.8 mm | 3 | |
| 25 Sept. | Light rain shower | 17° /9° | 2.3 mm | 4 | |
| 26 Sept. | Fog | 18° /9° | 0.8 mm | 4 | |
| 27 Sept. | Patchy rain possible | 19° /10° | 1.3 mm | 4.6 | |
| 28 Sept. | Patchy rain possible | 19° /8° | 1.7 mm | 4.5 | |
| 29 Sept. | Sunny | 18° /8° | 0.1 mm | 4.4 | |
| 30 Sept. | Patchy rain possible | 16° /7° | 1 mm | 4 | |
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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.
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Slovenia in September - FAQ
What are the expected maximum and minimum temperatures in Slovenia during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 11°. 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 127.5 mm is expected in Slovenia during September, occurring over more than 10 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 9 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 💧
Typically, Slovenia has 10 rainy days in September with a total of 127.5 mm of rainfall.
UV exposure in Slovenia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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