2026 Climate Averages

Weather: Ljubljana — September

The weather is near-perfect with ideal temperatures and minimal rain. Recommended month to visit.

🌟 Climate Overview

September is an excellent time to visit Ljubljana. Warm weather with highs of 23°C—great for outdoor activities. Rain is common, so pack an umbrella. Temperatures vary significantly between day and night—layering is recommended. As peak season, expect higher prices and more tourists.

6.4
GoTripzi Score Good

Based on weather comfort, crowds, prices, and activity options

Avg High

23°C

Avg Low

13°C

Rainy days

12days

Daylight

12.6h

Rainfall

143mm

Sunshine

8.8h/day

Humidity

78%

Humid
Sun Strength

5.4

High
Wind

11 km/h (gusts 31)

Is September a good time to visit Ljubljana?

The weather is near-perfect with ideal temperatures and minimal rain.

Now

--

Feels like --
Wind --
Humidity --
UV Index --
Local time —

Air Quality

Travel Context

  • Crowds
    Very Busy
  • Travel Costs Shoulder Rates

Daylight

Sunrise

06:41

Sunset

19:16

12.6h daylight

Visiting Ljubljana in September: Pros & Cons

Pros

  • Comfortable temperatures for sightseeing
  • One of the best months to visit

Cons

  • Peak season — expect crowds and higher prices

Things to Do in September

Events & Festivals

🎭
Ljubljana Festival
June–September Cultural

Recommended for This Weather

🥾 Hiking & nature trails
🏛️ Museums & galleries
🍳 Cooking classes & food tours
🎭 Cultural tours & local experiences

Ljubljana Weather by Month

Month Avg High Avg Low Rain Sunshine Humidity UV Index Crowds Condition
Jan 7°C 0°C 9d (82mm) 4.9h
83% Very Humid
1.9 Low
Good
Feb 10°C 2°C 5d (50mm) 6.1h
76% Humid
3 Moderate
Good
Mar 13°C 3°C 11d (90mm) 8.3h
69% Humid
5.2 High
Good
Apr 17°C 6°C 9d (79mm) 9.6h
68% Humid
6.9 High
Excellent
May 20°C 11°C 17d (151mm) 9.9h
74% Humid
7.4 Very High
Excellent
Jun 27°C 16°C 11d (84mm) 12.2h
71% Humid
8.9 Very High
Excellent
Jul 28°C 17°C 12d (107mm) 12.2h
71% Humid
8.8 Very High
Good
Aug 28°C 17°C 12d (122mm) 10.8h
74% Humid
7.4 Very High
Good
Sep Current 23°C 13°C 12d (143mm) 8.8h
78% Humid
5.4 High
Excellent
Oct 18°C 9°C 10d (117mm) 6.4h
84% Very Humid
3.3 Moderate
Excellent
Nov 11°C 4°C 9d (102mm) 4.8h
86% Very Humid
2 Low
Good
Dec 7°C 2°C 10d (102mm) 3.4h
88% Very Humid
1.4 Low
Good

⚖️Find Your Ideal Month

Adjust the sliders to weight what matters most to you.

5
3
3
Your Best MonthJulScore: 7
1.Jul
72.Aug
73.Feb
5.64.Jan
5.25.Jun
5.26.Sep
5.27.Dec
5.28.Mar
5.19.Nov
4.210.Apr
3.811.May
3.812.Oct
3.4

Where to Stay

See hotels, apartments & rentals around Ljubljana – live prices from Booking.com, Expedia, Vrbo and more

Open map in new tab

Ljubljana

Car-free riverside capital, including a medieval castle, Ljubljana Castle funicular and Dragon Bridge & Triple Bridge, dragon bridges, and charming café culture.

View Full Destination Guide

What to Pack for September

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces. A waterproof jacket and shoes are non-negotiable — showers are frequent.

Moderate Very Busy

🎒Personalized Packing List

Tell us about your trip and we'll create a custom packing list based on the weather.

Your Packing List

📋Essentials
👕Clothing
👟Footwear
🎒Accessories
🧴Toiletries & Health

Planning a trip to Ljubljana?

🔥 Peak season — book early for best rates

Frequently Asked Questions

Is September a good time to visit Ljubljana?
September is typically excellent for visiting Ljubljana, with average highs of 23°C and around 12 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.
Does it get cold at night in Ljubljana in September?
Evenings in Ljubljana during September are mild at 13°C. A light cardigan or long sleeves for evenings is usually enough. Outdoor dining remains comfortable, making it a great time to enjoy rooftop bars and terrace restaurants.
What should I pack for Ljubljana in September?
With highs of 23°C and lows of 13°C in September, we recommend: Compact umbrella, Waterproof jacket/shell, Sunscreen SPF 30+, Sunglasses. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.
Does it rain a lot in Ljubljana in September?
Ljubljana typically sees around 12 rainy days in September. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.
How many hours of daylight are there in Ljubljana in September?
In September, Ljubljana gets approximately 12.6 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.
Is September peak season in Ljubljana?
Yes, September is peak season in Ljubljana. Expect higher prices for accommodation and more crowds at popular attractions, but also the best weather conditions. Book hotels and major attractions in advance to secure availability and better rates.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Solar calculations: SunCalc (timezone: Europe/Ljubljana)

Last Updated: February 2026

More Ljubljana Guides

Best Time to Visit

Coming soon

Things to Do

Coming soon

Where to Stay

Best neighborhoods and hotel recommendations

Find Hotels →

Cost & Budget

Daily costs, money-saving tips, and budget breakdown

Read Guide →

Itineraries

Coming soon

Overview

Complete travel guide for Ljubljana: top things to do, itineraries, and typical costs.

Read Full Guide →