UV Index
UV Index
Today's UV index in Nepean, Canada 
will be up to 7.1, 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: 2025-05-09
With Nepean's UV index reaching 7.1, 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.
The UV index in Nepean, Canada, varies throughout the year, generally reaching its highest levels between May and August, often ranging from moderate to high during summer months. In winter, the UV index is typically low due to weaker sunlight and cloud cover.
Nepean experiences four distinct seasons: cold, snowy winters from December to February; mild springs in March to May; warm summers in June to August; and cool, colorful autumns from September to November. Rainfall is fairly evenly spread but peaks in summer.
Compared to the wider Ontario region, Nepean has similar seasonal weather patterns but is slightly cooler than southern parts of Ontario. Compared to neighboring Quebec, Nepean is a bit warmer in winter and less humid in summer.
See the UV index hour by hour for Nepean, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.