Buenos Aires (Ezeiza) vs Rosario: which is sunnier?
🇦🇷 Argentina vs 🇦🇷 Argentina · 298 km apart · long-term climate normals (NASA POWER, 2001–2020)
Buenos Aires (Ezeiza) and Rosario are virtually tied for annual sunshine — about 2,741 vs 2,737 hours a year. Month by month it's balanced: each has the higher Sunshine Score in 5 months, with 2 within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
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At a glance
| Buenos Aires (Ezeiza) | Rosario | |
|---|---|---|
| Sunshine hours / year | 2,741 | 2,737 |
| Sunniest month | December (79/100) | September (84/100) |
| Nov–Feb average score | 76/100 | 70/100 |
| Jun–Aug average score | 49/100 | 65/100 |
| Rain / year | 1,067 mm | 1,090 mm |
| Peak midday UV | 12 (extreme) | 11 (extreme) |
Buenos Aires (Ezeiza) vs Rosario month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Buenos Aires (Ezeiza) | Rosario | Buenos Aires (Ezeiza) | Rosario | Buenos Aires (Ezeiza) | Rosario | |
| January | 76 | 65 | 32° | 33° | 103 | 123 |
| February | 73 | 70 | 30° | 31° | 119 | 139 |
| March | 73 | 68 | 27° | 28° | 118 | 148 |
| April | 78 | 75 | 22° | 24° | 96 | 111 |
| May | 69 | 78 | 18° | 19° | 70 | 52 |
| June | 50 | 61 | 15° | 16° | 48 | 22 |
| July | 41 | 60 | 14° | 16° | 68 | 26 |
| August | 55 | 73 | 16° | 18° | 69 | 38 |
| September | 75 | 84 | 19° | 22° | 75 | 58 |
| October | 75 | 73 | 22° | 25° | 110 | 122 |
| November | 77 | 75 | 26° | 29° | 101 | 109 |
| December | 79 | 69 | 30° | 32° | 90 | 142 |
The sunnier month by month: Jan Buenos Aires (Ezeiza) · Feb Buenos Aires (Ezeiza) · Mar Buenos Aires (Ezeiza) · Apr Buenos Aires (Ezeiza) · May Rosario · Jun Rosario · Jul Rosario · Aug Rosario · Sep Rosario · Oct even · Nov even · Dec Buenos Aires (Ezeiza).
When to pick which
- November–February: Buenos Aires (Ezeiza) (average score 76/100 vs 70). Daytime highs are similar (30°C vs 31°C).
- March–May: too close to call — Buenos Aires (Ezeiza) averages 73/100, Rosario 74/100. Rosario is the warmer, around 24°C daytime highs vs 22°C.
- June–August: Rosario (average score 65/100 vs 49). Rosario is the warmer, around 17°C daytime highs vs 15°C.
- September–October: Rosario (average score 79/100 vs 75). Rosario is the warmer, around 24°C daytime highs vs 21°C.
Full month-by-month guides: Buenos Aires (Ezeiza) weather by month · Rosario weather by month · Best time to visit Argentina.
More comparisons: Buenos Aires (Ezeiza) vs Cordoba · Buenos Aires (Ezeiza) vs Montevideo · Rosario vs Cordoba · Rosario vs Montevideo · all head-to-heads