Nantes · AutumnMonth summary
Nantes weather in September
✅ Good
🌡️ Temperature min / max
13°C – 22°C
🌧 Rainy days
34% of days
☀️ Sunshine
11.0h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.7/10
📅 📅 Best month
July (8.6/10)
Quick decision
Should you visit Nantes 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: Favourable conditions in September (7.7/10). July scores higher but the gap is small.
By trip type
Nantes in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
🎯 Grape harvest — winery visits, tastings and festive atmosphere in the vineyards Autumn in Nantes is often underrated: 22°C, golden light and declining crowds. An interesting window. Expect rain on 34% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if July (8.6/10) remains theoretically better.
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All months for Nantes
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌦️ January | 4°C | 10°C | 44% | 3.2 | 4.9h | 4.0/10 |
| 🌦️ February | 5°C | 11°C | 41% | 2.4 | 6.8h | 4.3/10 |
| 🌦️ March | 6°C | 13°C | 42% | 2.4 | 8.8h | 5.1/10 |
| ⛅ April | 8°C | 15°C | 31% | 1.9 | 11.7h | 7.0/10 |
| 🌤️ May | 11°C | 19°C | 39% | 2.0 | 12.6h | 7.3/10 |
| 🌤️ June | 14°C | 22°C | 37% | 2.3 | 13.5h | 7.9/10 |
| 🌤️ July | 16°C | 24°C | 25% | 1.4 | 13.9h | 8.6/10 |
| 🌤️ August | 16°C | 24°C | 25% | 1.3 | 12.7h | 8.4/10 |
| 🌤️ September | 13°C | 22°C | 34% | 1.9 | 11.0h | 7.7/10 |
| 🌦️ October | 11°C | 18°C | 40% | 3.4 | 8.5h | 7.0/10 |
| 🌦️ November | 7°C | 13°C | 41% | 3.2 | 7.0h | 4.6/10 |
| 🌦️ December | 5°C | 11°C | 42% | 3.2 | 4.8h | 4.0/10 |
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, Nantes averages 22°C, 34% rainy days and 11.0h of sunshine per day. Overall weather score: 7.7/10.
See methodology →
Comparison
September vs July (best month)
The best month is July (score 8.6/10). Difference:
- 🌡️ Max temperature : +2°C
- 🌧 Rainy days : -9%
- ☀️ Sunshine : +2.9h/day
FAQ
FAQ — Nantes in September
Is September a good time to visit Nantes?
September is an excellent time to visit Nantes (score 7.7/10). With 22°C, 11.0h of sunshine and 34% rain, conditions are very favourable.
What to do in Nantes in September?
With 22°C max and 11.0h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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