UV Index
UV Index
Today's UV index in Wellesley, United States 
will be up to 6.6, indicating a high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-08
With Wellesley's UV index reaching 6.6, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.
Wellesley, United States, typically experiences a UV index that ranges from low to moderate throughout the year, with higher values during summer months reaching around 7 to 8 on sunny days. The UV index is lower in winter, often near 1 or 2, due to the sun's lower angle and shorter daylight hours.
Wellesley has four distinct seasons: warm summers with temperatures often in the 70s to 80s Fahrenheit, cold winters that can drop below freezing with snow, mild and colorful autumns, and cool springs with occasional rain. The weather changes gradually from one season to the next, showing typical Northeastern US patterns.
Compared to the wider New England region, Wellesley's weather is fairly typical, with similar seasonal changes and precipitation. It is cooler and snowier in winter than southern states like Virginia, but milder in summer than northern areas such as Maine or Vermont. Neighboring cities nearby have comparable weather conditions.
See the UV index hour by hour for Wellesley, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.