UV Index
UV Index
Today's UV index in Port Colborne, Canada 
will be up to 7.5, 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 Port Colborne's UV index reaching 7.5, 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.
Port Colborne's UV index varies throughout the year, typically low in the winter and reaching moderate to high levels in the summer months, especially in June and July. UV levels peak around midday during the summer, rising as the sun is highest in the sky.
The area experiences warm summers with temperatures often in the 20s°C (70s°F) and cold winters with snow and temperatures below freezing. Spring and fall are mild with gradual temperature changes and occasional rain, marking clear seasonal shifts.
Compared to the rest of Ontario and nearby U.S. states, Port Colborne is slightly cooler in summer than inland areas due to its proximity to Lake Erie. It has more lake effect snow in winter than regions further from the Great Lakes, making winters chillier.
See the UV index hour by hour for Port Colborne, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.