UV Index
UV Index
Today's UV index in Mendoza, Argentina 
will be up to 3.1, 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: 2025-06-01
With a UV index reaching up to 3.1 in Mendoza, 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.
Mendoza's UV index is generally high, especially during summer months, often reaching levels above 8, which means strong sun exposure. This is due to its clear skies and high altitude.
The weather in Mendoza changes with seasons: hot, dry summers with temperatures often above 30°C (86°F) and cold winters that can drop below 0°C (32°F). Rain mostly falls in spring and autumn, making these seasons mild.
Compared to other parts of Argentina, Mendoza is drier because it lies in a rain shadow by the Andes mountains. It has more sunshine and less humidity than Buenos Aires and is generally warmer than southern regions. Neighboring Chile shares similar dry and sunny conditions on the eastern side of the Andes.
See the UV index hour by hour for Mendoza, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.