Monaco · AutumnMonth summary
Monaco weather in September
✅ Good
🌡️ Temperature min / max
17°C – 24°C
🌧 Rainy days
23% of days
☀️ Sunshine
11.0h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
8.1/10
📅 📅 Best month
July (9.5/10)
Quick decision
Should you visit Monaco in September?
✅ Good
✅ Yes if: you want good weather with lower prices than peak season.
❌ No if: you need guaranteed perfect weather — some mixed days are possible.
Our take: Favourable conditions in September (8.1/10). July scores higher but the gap is small.
By trip type
Monaco 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
🎯 Ideal conditions for families — pleasant weather and outdoor activities accessible Autumn in Monaco is often underrated: 24°C, golden light and declining crowds. An interesting window. Rain risk remains low (23% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if July (9.5/10) remains theoretically better.
Browse by month
All months for Monaco
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 4°C | 12°C | 19% | 1.8 | 7.9h | 6.1/10 |
| ⛅ February | 6°C | 12°C | 23% | 2.4 | 8.9h | 6.1/10 |
| ⛅ March | 6°C | 14°C | 22% | 2.5 | 10.6h | 7.0/10 |
| ⛅ April | 10°C | 17°C | 27% | 2.1 | 11.8h | 7.2/10 |
| 🌤️ May | 13°C | 20°C | 29% | 2.0 | 13.0h | 7.7/10 |
| ☀️ June | 18°C | 25°C | 22% | 1.2 | 13.7h | 8.8/10 |
| ☀️ July | 21°C | 27°C | 11% | 0.4 | 13.5h | 9.5/10 |
| ☀️ August | 21°C | 28°C | 14% | 0.8 | 12.8h | 9.4/10 |
| 🌤️ September | 17°C | 24°C | 23% | 1.9 | 11.0h | 8.1/10 |
| 🌤️ October | 14°C | 20°C | 26% | 3.7 | 9.6h | 7.3/10 |
| ⛅ November | 8°C | 15°C | 31% | 3.9 | 8.1h | 6.3/10 |
| ⛅ December | 6°C | 13°C | 25% | 2.7 | 7.6h | 5.8/10 |
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, Monaco averages 24°C, 23% rainy days and 11.0h of sunshine per day. Overall weather score: 8.1/10.
See methodology →
Comparison
September vs July (best month)
The best month is July (score 9.5/10). Difference:
- 🌡️ Max temperature : +3°C
- 🌧 Rainy days : -12%
- ☀️ Sunshine : +2.5h/day
FAQ
FAQ — Monaco in September
Is September a good time to visit Monaco?
September is an excellent time to visit Monaco (score 8.1/10). With 24°C, 11.0h of sunshine and 23% rain, conditions are very favourable.
What to do in Monaco in September?
With 24°C and 11.0h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
Accommodation
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Activities & tours
Activities and tours in Monaco
Guided tours, skip-the-line tickets and local experiences.
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