Residents in Burlington can expect a mix of sun and warm temperatures this Thursday, April 23, 2026, though outdoor plans should include sun protection due to a high ultraviolet index. According to Environment Canada, inland areas will reach a high of 15°C, while those near Lake Ontario will see cooler temperatures of 9°C due to the cooling effect of the water.
The weather agency has issued a high UV index of 7 for the area. To stay safe while outdoors, Health Canada recommends that residents use sunscreen with a protection factor of 30 or higher. Experts also advise wearing protective clothing, hats, and sunglasses, and seeking shade during the peak midday hours between 11 a.m. and 3 p.m. Southern Ontario typically records the highest UV levels in the country due to its southerly latitude.
Following the sunny weather, conditions are expected to shift heading into the weekend. Friday, April 24, will bring a mix of sun and cloud with a 40 percent chance of showers in the morning and a high of 8°C. By Saturday, April 25, the sky will turn cloudy with a 60 percent chance of rain and a high of 10°C.
