Best time to visit Rosario, Argentina
Based on 2020–2024 of daily weather data, the best months to visit Rosario are September, November, February — when temperatures are comfortable, rainfall is low, and sunshine is plentiful.
Months ranked by travel comfort
| Rank | Month | High | Low | Precip | Rainy days | Sun | Score |
|---|---|---|---|---|---|---|---|
| 1 ★ | September | 21.8° | 10.7° | 188.9 mm | 40 | 9.4 h | 91 |
| 2 ★ | November | 27.8° | 16.8° | 252.5 mm | 51 | 11.7 h | 90 |
| 3 ★ | February | 29.3° | 19.2° | 335.9 mm | 58 | 11.6 h | 87 |
| 4 | December | 29.7° | 18.8° | 349.9 mm | 54 | 12.5 h | 87 |
| 5 | August | 19.3° | 8.3° | 163.9 mm | 29 | 8.8 h | 86 |
| 6 | October | 24.8° | 13.4° | 428.3 mm | 58 | 10.5 h | 85 |
| 7 | May | 18.5° | 9.8° | 285.2 mm | 34 | 8.4 h | 82 |
| 8 | June | 16.7° | 8.3° | 60.3 mm | 47 | 7.5 h | 82 |
| 9 | July | 16.5° | 6.8° | 105.1 mm | 39 | 7.9 h | 80 |
| 10 | April | 23.1° | 14.2° | 541.3 mm | 52 | 8.7 h | 79 |
| 11 | January | 30.8° | 20.6° | 610 mm | 58 | 12 h | 77 |
| 12 | March | 27.9° | 18.9° | 814.4 mm | 69 | 9.9 h | 73 |
Score (0–100) blends ideal-temperature comfort (50%), low-rainfall (30%), and sunshine (20%). Higher is better for a typical sightseeing trip.
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