UV Index
UV Index
Today's UV index in Santiago, Chile 
will be up to 4.5, 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: 2025-05-10
With a UV index reaching up to 4.5 in Santiago, 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 Santiago, Chile, can be very high during summer months, often reaching levels above 10, which is considered extreme. In winter, the UV index drops and is usually much lower, around 2 or 3.
Santiago has a Mediterranean climate with hot, dry summers and cool, wet winters. Summers are typically sunny and dry from December to February, while winters from June to August bring most of the rainfall and cooler temperatures.
Compared to the wider region, Santiago is drier than many parts of southern Chile, which have a rainy and temperate climate. Neighboring countries like Argentina have similar seasonal patterns but often experience colder winters in the Andes region near Santiago.
See the UV index hour by hour for Santiago, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.