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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 sees moderate rainfall in September, averaging 6 rainy days.

  • Is September a good time to visit Ljubljana? check out the best time to travel to Ljubljana page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/11°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Ljubljana in September average weather

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Temperatures trend during September in Ljubljana

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
28° /13° 0 mm 7
2 Sept. Mist
Mist
28° /14° 0 mm 7
3 Sept. Mist
Mist
27° /13° 4.2 mm 6
4 Sept. Overcast
Overcast
25° /12° 0.4 mm 6
5 Sept. Sunny
Sunny
25° /12° 3.7 mm 6
6 Sept. Sunny
Sunny
24° /11° 2.3 mm 6
7 Sept. Sunny
Sunny
25° /12° 0 mm 6
8 Sept. Sunny
Sunny
26° /12° 0.2 mm 7
9 Sept. Sunny
Sunny
22° /12° 5.6 mm 6
10 Sept. Sunny
Sunny
24° /11° 0.2 mm 6
11 Sept. Sunny
Sunny
25° /11° 0.2 mm 6
12 Sept. Partly cloudy
Partly cloudy
21° /9° 31.9 mm 6
13 Sept. Partly cloudy
Partly cloudy
17° /8° 5.5 mm 5
14 Sept. Mist
Mist
18° /9° 3.7 mm 4
15 Sept. Fog
Fog
18° /8° 0.2 mm 5
16 Sept. Mist
Mist
20° /8° 1.5 mm 5
17 Sept. Mist
Mist
18° /8° 1.7 mm 4
18 Sept. Mist
Mist
21° /9° 0.1 mm 5
19 Sept. Light rain shower
Light rain shower
18° /10° 3.6 mm 5
20 Sept. Light rain shower
Light rain shower
18° /10° 1.5 mm 4
21 Sept. Patchy rain possible
Patchy rain possible
21° /10° 0.3 mm 5
22 Sept. Light rain shower
Light rain shower
21° /10° 6.9 mm 5
23 Sept. Light rain shower
Light rain shower
19° /9° 3.7 mm 5
24 Sept. Light drizzle
Light drizzle
17° /11° 5.2 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
18° /9° 1.4 mm 4
26 Sept. Fog
Fog
21° /9° 0.1 mm 5
27 Sept. Partly cloudy
Partly cloudy
21° /12° 2.6 mm 5
28 Sept. Sunny
Sunny
20° /8° 3.5 mm 5
29 Sept. Sunny
Sunny
19° /7° 0.2 mm 5
30 Sept. Cloudy
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 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Ljubljana during September?
In September, Ljubljana can expect light to moderate rainfall, totaling 31.7 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
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.

What to pack to Ljubljana in September?

As you prepare for your trip to Ljubljana 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 Ljubljana, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

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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Location coordinates Where is Ljubljana?

Get accurate weather forecasts for Ljubljana, located at latitude 46.051 and longitude 14.505. Stay updated with localized weather information tailored for Ljubljana.

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