UV Index
UV Index
Today's UV index in Rosario, Argentina 
will be up to 4, indicating a moderate level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-09
With a UV index reaching up to 4 in Rosario, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
The UV index in Rosario, Argentina, is high during the summer months, often reaching levels above 10. It decreases in autumn and winter, dropping to moderate or low levels by June and July. Rosario has warm summers with temperatures often above 30°C (86°F) and mild winters with temperatures around 10°C to 15°C (50°F to 59°F). Rainfall is spread throughout the year but is slightly higher in spring and summer. Compared to the wider region of Argentina, Rosario's climate is milder than the northern tropical areas but warmer than southern Patagonia. Neighboring countries like Uruguay have similar weather patterns due to close proximity and shared geography.
See the UV index hour by hour for Rosario, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.