Today, the UV index suggests low sun danger (0-2) in Toronto, reaching up to 1.4. Remember sunglasses and SPF 30+ on sunny days, and be cautious around reflective surfaces like sand, water, and snow for increased UV exposure.
Read more here about the climate and sun exposure in and around Toronto.
The UV index in Toronto ranges from low to high throughout the year, with the highest values occurring in the summer months. In June, July, and August, the UV index can reach levels of 7 to 9, which is considered high. It is important to protect your skin from harmful UV rays by using sunscreen, wearing protective clothing, and seeking shade during peak sun hours.
Toronto experiences four distinct seasons: spring, summer, fall, and winter. Spring (March to May) is mild with temperatures ranging from 5 °C to 15 °C (41 °F to 59 °F). Summer (June to August) is warm with temperatures averaging between 20 °C and 26 °C (68 °F and 79 °F). Fall (September to November) brings cooler weather with temperatures dropping to 9 °C to 16 °C (48 °F to 61 °F). Winter (December to February) is cold with temperatures varying from -1 °C to -6 °C (30 °F to 21 °F), and snowfall is common.
Compared to its surrounding region, Toronto experiences moderate sun exposure. Although not as sunny as some southern regions, it receives an average of 2,000 to 2,400 hours of sunshine annually. The city benefits from its proximity to the Great Lakes, which can moderate extreme weather conditions. However, it is still important to be aware of the sun's impact on your health and take appropriate precautions.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Toronto. It's designed to provide you with a better understanding of the yearly weather and sun exposure.