Porto · AutumnMonth summary
Porto weather in September
✅ Good
🌡️ Temperature min / max
61°F – 72°F
🌧 Rainy days
19% of days
☀️ Sunshine
11.0h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
8.0/10
📅 📅 Best month
August (8.9/10)
Quick decision
Should you visit Porto 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: Porto in September: 72°F and 11.0h of sunshine. Decent, but not the peak.
By trip type
Porto 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
Autumn in Porto is often underrated: 22°F, golden light and declining crowds. An interesting window. Rain risk remains low (19% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if August (8.9/10) remains theoretically better.
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All months for Porto
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌦️ January | 45°F | 57°F | 40% | 0.2in | 8.1h | 5.0/10 |
| ⛅ February | 46°F | 59°F | 37% | 0.2in | 9.0h | 6.1/10 |
| 🌦️ March | 48°F | 59°F | 46% | 0.2in | 10.1h | 5.7/10 |
| 🌦️ April | 52°F | 63°F | 42% | 0.2in | 11.6h | 7.0/10 |
| 🌤️ May | 55°F | 68°F | 31% | 0.1in | 13.0h | 7.6/10 |
| 🌤️ June | 59°F | 70°F | 26% | 0.1in | 13.2h | 8.0/10 |
| 🌤️ July | 61°F | 73°F | 10% | 0.0in | 13.4h | 8.8/10 |
| 🌤️ August | 61°F | 75°F | 8% | 0.0in | 12.5h | 8.9/10 |
| 🌤️ September | 61°F | 72°F | 19% | 0.1in | 11.0h | 8.0/10 |
| 🌤️ October | 57°F | 68°F | 40% | 0.2in | 9.5h | 7.1/10 |
| 🌦️ November | 50°F | 61°F | 50% | 0.3in | 7.9h | 5.2/10 |
| 🌦️ December | 48°F | 57°F | 47% | 0.2in | 7.3h | 4.4/10 |
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, Porto averages 72°F, 19% rainy days and 11.0h of sunshine per day. Overall weather score: 8.0/10.
See methodology →
Comparison
September vs August (best month)
The best month is August (score 8.9/10). Difference:
- 🌡️ Max temperature : +2°F
- 🌧 Rainy days : -11%
- ☀️ Sunshine : +1.5h/day
FAQ
FAQ — Porto in September
Is September a good time to visit Porto?
September is an excellent time to visit Porto (score 8.0/10). With 72°F, 11.0h of sunshine and 19% rain, conditions are very favourable.
What to do in Porto in September?
With 72°F 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 Porto
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