Rosario · AutumnMonth summary
Rosario weather in September
✅ Good
🌡️ Temperature min / max
50°F – 70°F
🌧 Rainy days
18% of days
☀️ Sunshine
11.2h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.8/10
📅 📅 Best month
November (8.7/10)
Quick decision
Should you visit Rosario in September?
✅ Good
✅ Yes if: you want to explore the city on foot without suffering from heat.
❌ No if: you're looking for a beach destination — water and air are still cool.
Our take: Favourable conditions in September (7.8/10). November scores higher but the gap is small.
By trip type
Rosario in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in September
Autumn in Rosario is often underrated: 21°F, golden light and declining crowds. An interesting window. Rain risk remains low (18% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if November (8.7/10) remains theoretically better.
Browse by month
All months for Rosario
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 70°F | 88°F | 28% | 0.1in | 13.5h | 8.0/10 |
| 🌤️ February | 68°F | 86°F | 28% | 0.1in | 12.6h | 8.1/10 |
| 🌤️ March | 64°F | 81°F | 31% | 0.2in | 11.7h | 8.2/10 |
| 🌤️ April | 59°F | 73°F | 31% | 0.2in | 10.1h | 7.6/10 |
| 🌤️ May | 52°F | 66°F | 20% | 0.1in | 9.6h | 7.3/10 |
| ⛅ June | 45°F | 61°F | 14% | 0.0in | 9.2h | 7.1/10 |
| ⛅ July | 45°F | 61°F | 18% | 0.0in | 9.5h | 7.1/10 |
| 🌤️ August | 46°F | 64°F | 14% | 0.1in | 10.0h | 7.3/10 |
| 🌤️ September | 50°F | 70°F | 18% | 0.1in | 11.2h | 7.8/10 |
| 🌤️ October | 55°F | 75°F | 26% | 0.1in | 12.0h | 8.1/10 |
| ☀️ November | 61°F | 81°F | 23% | 0.1in | 13.1h | 8.7/10 |
| 🌤️ December | 66°F | 86°F | 27% | 0.1in | 13.9h | 8.4/10 |
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, Rosario averages 70°F, 18% rainy days and 11.2h of sunshine per day. Overall weather score: 7.8/10.
See methodology →
Comparison
September vs November (best month)
The best month is November (score 8.7/10). Difference:
- 🌡️ Max temperature : +6°F
- 🌧 Rainy days : +5%
- ☀️ Sunshine : +1.9h/day
FAQ
FAQ — Rosario in September
Is September a good time to visit Rosario?
September is an excellent time to visit Rosario (score 7.8/10). With 70°F, 11.2h of sunshine and 18% rain, conditions are very favourable.
What to do in Rosario in September?
With 70°F max and 11.2h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Rosario
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