Rosario, Argentina, enjoys a humid subtropical climate, characterized by four distinct seasons. The city experiences hot and humid summers, mild and relatively dry winters, and transitional autumn and spring seasons. **Summer (December – February):** Summers in Rosario are typically hot and humid. Temperatures often soar into the high 80s and low 90s Fahrenheit (30s Celsius), with occasional heatwaves pushing temperatures even higher. Humidity levels are also high, making the heat feel more intense. Rainfall is common, often occurring in the form of afternoon or evening thunderstorms. While the summer months offer plenty of sunshine, these storms can provide a brief respite from the heat. Swimming and enjoying outdoor activities in the early mornings or late evenings are popular strategies for coping with the summer heat. **Autumn (March – May):** Autumn brings a welcome relief from the summer heat. Temperatures gradually cool down, and humidity levels decrease, making for more pleasant weather. The days are still mostly sunny, but the evenings become noticeably cooler. This is a beautiful time of year in Rosario, as the leaves on the trees begin to change color, creating a picturesque landscape. Rainfall is generally less frequent than in the summer, making it a good time for outdoor activities such as walking, cycling, and exploring the city’s parks. **Winter (June – August):** Winters in Rosario are mild compared to many other regions. Temperatures rarely drop below freezing, and snowfall is extremely rare. Daytime temperatures typically range from the low 50s to the mid-60s Fahrenheit (10s-18s Celsius). While the days are often sunny, the evenings can be quite cool. Rainfall is generally low during the winter months, making it the driest season of the year. However, occasional cold fronts can bring periods of rain and wind. Layering clothing is essential during the winter months to stay comfortable. **Spring (September – November):** Spring is a delightful time of year in Rosario. Temperatures gradually warm up, and the city comes alive with blooming flowers and lush greenery. Days are mostly sunny, and rainfall is moderate. The weather is generally pleasant and comfortable, making it a great time to explore the city and enjoy outdoor activities. However, spring can also be a bit unpredictable, with occasional cold snaps and periods of rain. Overall, Rosario’s climate provides a diverse range of weather conditions throughout the year. The hot and humid summers are followed by mild and pleasant autumns, cool and relatively dry winters, and vibrant springs. Understanding the seasonal variations in temperature and rainfall is helpful for planning trips and activities in Rosario. Whether you prefer the warmth of summer, the colors of autumn, the mildness of winter, or the vibrancy of spring, Rosario offers something for everyone throughout the year.
815×611 rosario climate weather rosario temperature month from en.climate-data.org 
800×194 el clima en rosario una semana fresca inestable rosario from www.rosario3.com