Ottawa is expected to hit 30 degrees Celsius today for the first time this year, according to Environment Canada. The forecast calls for a high of 30 C, surpassing the previous high for 2026. The warm weather comes after a spring that saw below-average temperatures in April and May.
Heat Advisory and Safety Tips
Residents are advised to stay hydrated, avoid strenuous outdoor activities during peak heat hours, and check on vulnerable neighbours. The city has opened cooling centres at select community centres. Ottawa Public Health reminds everyone to never leave people or pets in parked vehicles.
Record-Breaking Potential
While 30 C is notable, the record for June 4 in Ottawa is 34.5 C set in 1999. Today's forecast falls short of that mark but signals the onset of summer heat. The warm spell is expected to continue into the weekend, with highs near 28 C on Friday and 26 C on Saturday.
This temperature milestone follows a pattern of fluctuating spring weather. In May, Ottawa saw several days with highs below 15 C, making the sudden jump to 30 C a stark contrast. Climate experts attribute the variability to shifting jet stream patterns.
For those planning outdoor activities, sunscreen and hats are recommended. The UV index is expected to be high, reaching 8 out of 11. The city’s beaches and pools are open, and residents are encouraged to take advantage of the heat safely.
