Ljubljana · AutumnMonth summary
Ljubljana weather in September
✅ Good
🌡️ Temperature min / max
12°C – 22°C
🌧 Rainy days
39% of days
☀️ Sunshine
11.3h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.5/10
📅 📅 Best month
July (8.7/10)
Quick decision
Should you visit Ljubljana in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 22°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Ljubljana in September: 22°C and 11.3h of sunshine. Decent, but not the peak.
By trip type
Ljubljana in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
🎯 Harvest season — fresh local produce at markets and restaurants Autumn in Ljubljana is often underrated: 22°C, golden light and declining crowds. An interesting window. Expect rain on 39% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if July (8.7/10) remains theoretically better.
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Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | -4°C | 5°C | 29% | 2.8 | 6.1h | 4.0/10 |
| 🌫️ February | -2°C | 9°C | 31% | 3.0 | 7.2h | 4.4/10 |
| ⛅ March | 1°C | 12°C | 35% | 2.7 | 10.0h | 5.7/10 |
| ⛅ April | 5°C | 16°C | 31% | 2.8 | 11.7h | 7.1/10 |
| 🌦️ May | 9°C | 19°C | 50% | 4.5 | 12.0h | 7.1/10 |
| 🌤️ June | 14°C | 26°C | 38% | 2.7 | 14.0h | 8.4/10 |
| 🌤️ July | 16°C | 28°C | 35% | 3.1 | 14.0h | 8.7/10 |
| 🌤️ August | 16°C | 27°C | 31% | 2.9 | 12.7h | 8.5/10 |
| 🌤️ September | 12°C | 22°C | 39% | 5.0 | 11.3h | 7.5/10 |
| ⛅ October | 7°C | 17°C | 32% | 3.7 | 9.1h | 7.0/10 |
| 🌦️ November | 3°C | 10°C | 38% | 4.6 | 5.2h | 4.0/10 |
| 🌫️ December | -2°C | 5°C | 30% | 3.2 | 5.0h | 3.6/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Ljubljana averages 22°C, 39% rainy days and 11.3h of sunshine per day. Overall weather score: 7.5/10.
See methodology →
Comparison
September vs July (best month)
The best month is July (score 8.7/10). Difference:
- 🌡️ Max temperature : +6°C
- 🌧 Rainy days : -4%
- ☀️ Sunshine : +2.7h/day
FAQ
FAQ — Ljubljana in September
Is September a good time to visit Ljubljana?
September is an excellent time to visit Ljubljana (score 7.5/10). With 22°C, 11.3h of sunshine and 39% rain, conditions are very favourable.
What to do in Ljubljana in September?
With 22°C max and 11.3h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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