Year-round weather and climate in Rosario, Argentina
Average temperatures in Rosario run from an average low of 7°C45°F in July up to an average high of 31°C88°F in January. May is the driest month at 4 rainy days; March the wettest at 10. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 948K
- Currency
- ARS
- Language
- Guaraní / Spanish
- Time zone
- Cordoba
Best time to visit
The most pleasant weather falls in October, November, and December, offering a perfect balance of comfortable temperatures and clear skies.
Rain character
Tropical Downpours: Expect intense bursts of rain during wetter months. Pack quick-drying footwear and a compact umbrella.
Day-to-night swing
Evening Chill: Temperatures drop by a noticeable 11°C20°F when the sun goes down. A light sweater or jacket is usually all you need for evening plans.
Seasonality Profile
Humid Subtropical: Sweltering, wet summers accompanied by mild, drier winters.
Evening vibe
Outdoor Haven: With over half the year supporting mild evenings, open-air dining and rooftop bars are the norm. Pack smart-casual, breathable evening wear.
Sightseeing stamina
All-Day Strolling: Weather is generally forgiving for long walking days. Comfortable sneakers are your most important packing item.
Average temperatures, sunshine, and rainfall
Average monthly weather in Rosario, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. May is typically driest at 4 days (57mm); Mar the wettest at 10 days (163mm).
| Month | Average high | Average low | Sunshine hours | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 31°C / 87°F | 21°C / 69°F | 12h | 8 | 122mm |
| Feb | 29°C / 85°F | 19°C / 67°F | 12h | 8 | 67mm |
| Mar | 28°C / 82°F | 19°C / 66°F | 10h | 10 | 163mm |
| Apr | 23°C / 74°F | 14°C / 58°F | 9h | 7 | 108mm |
| May | 19°C / 65°F | 10°C / 50°F | 8h | 4 | 57mm |
| Jun | 17°C / 62°F | 8°C / 47°F | 8h | 4 | 12mm |
| Jul | 17°C / 62°F | 7°C / 44°F | 8h | 4 | 21mm |
| Aug | 19°C / 67°F | 8°C / 47°F | 9h | 4 | 33mm |
| Sep | 22°C / 71°F | 11°C / 51°F | 9h | 5 | 38mm |
| Oct | 25°C / 77°F | 13°C / 56°F | 11h | 7 | 86mm |
| Nov | 28°C / 82°F | 17°C / 62°F | 12h | 6 | 50mm |
| Dec | 30°C / 85°F | 19°C / 66°F | 13h | 8 | 70mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Rosario?
The most sunshine in Rosario comes around December, averaging 13 hours a month. If you're heading there then, pack your sunglasses and sunscreen.
What clothes should I pack for Rosario?
Your packing list depends entirely on when you travel. Temperatures in Rosario swing from an average low of 7°C45°F in July up to 31°C88°F in January. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Rosario?
Rosario gets rain on about 75 days out of the year. The wettest month is March. If you're traveling during the rainy season, you'll definitely want to pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Rosario with Packola.
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