City in Santa Fe, Argentina
Rosario weather by month and the best time to visit
When to go to Rosario
Mar–May and Oct–Nov are mild. Dec–Feb is hot, humid and stormy; Jun–Aug is cool and damp but fine for city life.
Rosario weather by month
Average daily high, rainfall and conditions.
- Jan33°123 mm
- Feb31°139 mm
- Mar28°148 mm
- Apr24°111 mm
- May19°52 mm
- Jun16°22 mm
- Jul16°26 mm
- Aug18°38 mm
- Sep22°58 mm
- Oct25°122 mm
- Nov29°109 mm
- Dec32°142 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 33°C91°F | 19°C66°F | 123 mm | 61% | Pleasant |
| February | 31°C87°F | 18°C64°F | 139 mm | 67% | Pleasant |
| March | 28°C82°F | 15°C60°F | 148 mm | 71% | Pleasant |
| April | 24°C74°F | 12°C53°F | 111 mm | 75% | Pleasant |
| May | 19°C66°F | 8°C47°F | 52 mm | 80% | Pleasant |
| June | 16°C61°F | 5°C41°F | 22 mm | 80% | Cool |
| July | 16°C60°F | 4°C40°F | 26 mm | 78% | Cool |
| August | 18°C65°F | 6°C42°F | 38 mm | 74% | Pleasant |
| September | 22°C71°F | 8°C47°F | 58 mm | 69% | Pleasant |
| October | 25°C78°F | 12°C53°F | 122 mm | 68% | Pleasant |
| November | 29°C84°F | 15°C58°F | 109 mm | 63% | Pleasant |
| December | 32°C89°F | 17°C63°F | 142 mm | 60% | Pleasant |
Best months across Argentina
| Place | Best months | Warmest month |
|---|---|---|
| Buenos Aires | Mar–May, Oct–Nov | Jan (28°C) |
| Mendoza | Mar–May, Oct–Nov | Jan (33°C) |
| Bariloche | Jul–Aug, Dec–Mar | Feb (22°C) |
| El Calafate | Nov–Mar | Feb (15°C) |
| El Chaltén | Dec–Mar | Feb (11°C) |
| Ushuaia | Dec–Mar | Feb (12°C) |
| Salta | Apr–May, Sep–Oct | Nov (32°C) |
| Puerto Iguazú | Apr–Jun, Sep–Oct | Jan (32°C) |
| Córdoba | Mar–May, Sep–Nov | Jan (32°C) |
| Puerto Madryn | Sep–Nov | Jan (27°C) |
| Mar del Plata | Dec–Mar | Jan (24°C) |
| Quebrada de Humahuaca | Apr–May, Sep–Oct | Nov (28°C) |
| Cafayate | Mar–May, Sep–Oct | Nov (30°C) |
| Rosario | Mar–May, Oct–Nov | Jan (33°C) |
Quick answers
What is the best month to visit Rosario?
Mar–May, Oct–Nov. Mar–May and Oct–Nov are mild. Dec–Feb is hot, humid and stormy; Jun–Aug is cool and damp but fine for city life.
When is the rainy season in Rosario?
Rain peaks in March with about 148 mm. No month averages 150 mm or more.
What is the hottest month in Rosario?
January, with average highs of 33°C (91°F).
How cold does Rosario get?
The coolest nights are in July, averaging 4°C (40°F).
More about Rosario
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Sources
- NASA POWER climatology (2001–2020)
- Rosario Airport (Aeropuerto Rosario)
- Municipalidad de Rosario
- Argentina tourism
- La Capital: Rosario bus fare 1,720 ARS (Feb 2026)
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.