Piran · AutumnMonth summary
Piran weather in September
✅ Good
🌡️ Temperature min / max
18°C – 24°C
🌧 Rainy days
35% of days
☀️ Sunshine
11.7h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.8/10
📅 📅 Best month
July (9.0/10)
Quick decision
Should you visit Piran in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 24°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Piran in September: 24°C and 11.7h of sunshine. Decent, but not the peak.
By trip type
Piran 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
🎯 Peak season — book ahead for best rates. Accommodation prices at their highest Autumn in Piran is often underrated: 24°C, golden light and declining crowds. An interesting window. Expect rain on 35% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if July (9.0/10) remains theoretically better.
Browse by month
All months for Piran
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | 3°C | 9°C | 30% | 2.3 | 7.7h | 4.6/10 |
| 🌫️ February | 4°C | 11°C | 31% | 3.1 | 9.0h | 5.3/10 |
| ⛅ March | 6°C | 13°C | 30% | 2.4 | 10.8h | 6.8/10 |
| ⛅ April | 9°C | 16°C | 31% | 2.6 | 12.1h | 7.1/10 |
| 🌦️ May | 14°C | 20°C | 46% | 4.0 | 13.0h | 7.3/10 |
| 🌤️ June | 19°C | 26°C | 25% | 2.3 | 14.0h | 8.8/10 |
| 🌤️ July | 21°C | 28°C | 27% | 2.4 | 14.0h | 9.0/10 |
| ☀️ August | 22°C | 28°C | 22% | 2.7 | 13.0h | 9.0/10 |
| 🌤️ September | 18°C | 24°C | 35% | 5.4 | 11.7h | 7.8/10 |
| 🌤️ October | 13°C | 19°C | 31% | 4.1 | 9.9h | 7.2/10 |
| 🌦️ November | 9°C | 15°C | 44% | 4.9 | 8.0h | 5.1/10 |
| 🌫️ December | 5°C | 11°C | 34% | 3.5 | 7.0h | 4.5/10 |
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, Piran averages 24°C, 35% rainy days and 11.7h of sunshine per day. Overall weather score: 7.8/10.
See methodology →
Comparison
September vs July (best month)
The best month is July (score 9.0/10). Difference:
- 🌡️ Max temperature : +4°C
- 🌧 Rainy days : -8%
- ☀️ Sunshine : +2.3h/day
FAQ
FAQ — Piran in September
Is September a good time to visit Piran?
September is an excellent time to visit Piran (score 7.8/10). With 24°C, 11.7h of sunshine and 35% rain, conditions are very favourable.
What to do in Piran in September?
With 24°C max and 11.7h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
Find a place to stay in Piran
Find places to stay in Piran in September
Search on Hotels.com
Activities & tours
Activities and tours in Piran
Guided tours, skip-the-line tickets and local experiences.
Browse activities on GetYourGuide
Flights
Find a flight to Piran
Compare flights from all airlines.
Search flights
←
Explore also
Similar destinations in September
Trieste🌍 Top destinations
Other top destinations in September
Dakar
Peru
Turks and Caicos
Cabo San LucasWeather rankings
Compare destinations by weather
Best in EuropeGuides & comparisons