Ottawa residents can expect a mild but unsettled stretch of spring weather, with scattered showers, cloudy periods, and cooler nights appearing in the latest forecast. The city is seeing light rain and temperatures around 14°C, with more shower chances expected through the coming days.
Environment Canada’s Ottawa forecast, issued Sunday, May 10, 2026, calls for a mix of sun and cloud with a 40 percent chance of showers late in the afternoon. Winds are expected from the west at 20 km/h, gusting to 40 km/h, while the daytime high reaches 15°C.
Scattered Showers Could Affect Outdoor Plans
The Ottawa weather forecast is not severe, but it may still affect outdoor plans, travel, sports, and weekend activities. With showers possible late Sunday afternoon and into the evening, residents may want to keep umbrellas or rain jackets nearby.
Sunday night is expected to become partly cloudy, with a 40 percent chance of showers during the evening. Winds should ease later in the evening, but temperatures may fall to around 2°C, with a risk of frost in some areas.
Monday Stays Cool With More Shower Risk
Monday, May 11, is expected to bring another cool spring day for Ottawa. Environment Canada forecasts a mix of sun and cloud with a 30 percent chance of afternoon showers and a high of 14°C. Monday night may bring cloudy periods, another 30 percent chance of showers, and a low near -1°C.
That colder overnight low means sensitive plants, gardens, and early spring flowers may need extra attention. Residents who have already started planting may want to protect vulnerable outdoor plants from possible frost.
Midweek Forecast Shows More Rain
After a sunnier Tuesday with a high near 16°C, wet weather is expected to return by Wednesday. The forecast calls for showers on Wednesday, May 13, with a high of 13°C. Wednesday night remains cloudy, with a 60 percent chance of showers and a low near 10°C.
Thursday also looks cloudy, with a 40 percent chance of showers and a high near 16°C. By Friday, Ottawa should see a mix of sun and cloud with temperatures rising closer to 19°C.
Mild Weather Still Feels Cooler Than Normal
Although the forecast may feel mild compared with winter, Ottawa’s daytime highs remain somewhat cool for mid-May. Environment Canada lists the normal high for this period at 19°C and the normal low at 7°C, meaning several forecast highs and overnight lows are below seasonal averages.
This creates a mixed spring pattern: daytime weather may feel comfortable at times, but chilly mornings, gusty winds, and rain chances could make conditions feel less pleasant.
What Ottawa Residents Should Expect This Week
The main weather story for Ottawa is changeable spring conditions. Residents should expect cloudy skies at times, scattered showers, cooler-than-normal nights, and occasional gusty winds. The forecast does not point to extreme weather, but rain risks could still create slippery roads, damp commutes, and delays for outdoor events.
Drivers should use extra caution during showers, especially when roads become wet after dry periods. Pedestrians, cyclists, and transit users may also want to plan for sudden changes in weather.
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