Weather Near Ajax, On | Canada Edition

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By Chloe Dubois, Business & Economy EditorReviewed by Grace PattersonForecast data: Open-Meteo & Environment and Climate Change Canada

Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Edition Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.

If you’re stepping out near Ajax, Ont., plan around the live forecast above — a classic Lake Ontario shoreline day with passing clouds and a breeze off the water. Layer up for temperatures that may shift quickly as the lake’s influence mixes with inland air.

What’s driving the weather near Ajax today?

A weak low-pressure system tracking east of the Greater Toronto Area is pulling in cool, moist air from Lake Ontario. Combined with a light westerly flow, this pattern often produces bands of cloud and patchy drizzle, especially closer to the water in communities like Pickering and Whitby. By evening, drier air from the north should break up the clouds, leaving a clearer but cooler night.

How does Lake Ontario affect Ajax’s forecast?

Ajax sits on the north shore of Lake Ontario, so the lake moderates temperature swings and can increase cloud cover and wind speeds. During late winter, water temperatures hover near 3–4°C, which keeps shoreline areas slightly cooler than inland spots during daytime. If the wind shifts to an onshore (southwesterly) direction, expect a sharper chill and the possibility of lake-effect flurries moving across Durham Region.

Location43.85°N, 79.02°W, along Lake Ontario’s north shore, about 40 km east of downtown Toronto

ElevationApproximately 85 metres above sea level

WindTypical March average: 14 km/h, with gusts occasionally reaching 35 km/h near the lake

Seasonal normHigh for late March near Ajax: 4°C; low: -2°C

Will rain or snow affect my evening commute near Ajax?

Based on the live forecast above, a few light rain showers are possible this afternoon, but by late evening any precipitation should taper off. If the wind shifts north, a brief dusting of snow could occur near the lake, though accumulation is unlikely.

How windy does it get along the Ajax waterfront?

Winds off Lake Ontario can be brisk, especially in open areas like Rotary Park or the waterfront trail. Expect sustained speeds around 15–20 km/h, with stronger gusts in exposed spots. For current wind advisories, check our Weather Warning page.

Is Ajax’s weather different from downtown Toronto’s?

Yes, the lake effect is often more pronounced in Ajax because it faces a longer fetch across open water. Toronto’s sheltered harbour and urban heat island can keep temperatures 1–2°C warmer, while Ajax sees slightly more cloud and a sharper breeze.