Rosario Weather in January

Rosario in January sees very high daytime temperatures of 31°C (88°F) and nighttime lows of 19°C (66°F). Rainfall is fairly high this month at around 107 mm (4.2 in), so pack a rain jacket to stay dry.

Rainfall in Rosario in January

This month experiences about 9 days of rain according to historical data, averaging 107 mm (4.2 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Rosario in January

In January, expect very high temperatures in Rosario, with highs of 31°C (88°F) and lows of 19°C (66°F) at night. Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights drop to around 19°C (66°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. Bear in mind, these are average temperatures, and it can get even warmer on particular days. Make sure to choose clothing that accommodates the warmth.

Sunshine in Rosario in January

With approximately 294 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Rosario in January

January sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Rosario. Our weather planner can help you explore destinations with more pleasant weather conditions.