UV Index
UV Index
Today's UV index in Mazatlán, Mexico 
will be up to 12.4, indicating a extreme level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-22
UV index at 12.4 in Mazatlán means extreme risk: limit outdoor time especially from 10 a.m. to 4 p.m., actively seek shade, wear protective clothing, broad-brimmed hat, apply SPF 30+ sunscreen every 2 hours, and wear UV-blocking sunglasses. Watch for bright surfaces like water and snow increasing UV exposure.
Mazatlán's UV index is often high, especially during spring and summer months, frequently reaching levels that indicate strong sun exposure. The city experiences intense sunlight mostly from March through September.
The weather in Mazatlán is tropical with a hot, humid summer and a mild, dry winter. The rainy season lasts from June to October, bringing most of the annual rainfall, while winters are warm and pleasant with little rain.
Compared to other places in Mexico, Mazatlán is warmer and more humid than inland areas like Mexico City. It is cooler and less humid than tropical coastal regions further south, such as in the Yucatán Peninsula. Neighboring coastal cities share similar weather patterns but may vary slightly in rainfall amounts.
See the UV index hour by hour for Mazatlán, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.