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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scene Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
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The live forecast above shows Hamilton’s conditions right now. Today’s weather is typical for the season, with temperatures and precipitation that match the long‑term average for this date. Check the radar for hourly shifts if you’re planning outdoor time.
What is the best time to visit Hamilton?
Late spring (May–June) and early autumn (September–October) offer the most comfortable temperatures for exploring the city’s waterfalls and trails. July and August are warm and humid, ideal for lake activities, while winter brings lake‑effect snow that can affect driving. Snowbirds and March‑break travellers should aim for late March, when the risk of heavy snow drops and daytime highs reach 5–10°C.
What should you pack for a day in Hamilton?
Dress in layers year‑round. In summer, light clothing and a rain jacket are enough; a sweater is useful for cooler evenings. From November to March, pack a warm coat, boots, gloves and a hat. An umbrella is handy any month – Hamilton sees rain on roughly 140 days per year. If you’re checking the Canada weather hub for a 14‑day outlook, adjust your packing accordingly.
Does Hamilton get lake‑effect snow?
Yes. Hamilton lies downwind of Lake Ontario, so westerly winds can bring heavy, localised snowbands from November to February. The city often sees more snow than nearby Toronto, especially in the upper escarpment areas.
When is the rainiest month?
November and December are the wettest months, each averaging about 80 mm of precipitation (mostly rain, but some snow). July is also wet due to thunderstorms. Use the weather warning page to stay ahead of heavy rain events.
Is Hamilton warmer than Toronto in winter?
Slightly cooler on average because Hamilton is farther from Lake Ontario’s moderating influence. January highs in Hamilton are about 1°C lower than Toronto’s. The difference is small but noticeable on blustery days.