Hamilton weather

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Recommended for Ontario

The weather guide for Ontario (Hamilton) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

When is the best time to go to Hamilton?

The best time to go to Hamilton is June and July based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

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Max Day Temperature (°C)

  • -2°C maximum daytime temperature in January in Hamilton-2
  • -1°C maximum daytime temperature in February in Hamilton-1
  • 4°C maximum daytime temperature in March in Hamilton4
  • 12°C maximum daytime temperature in April in Hamilton12
  • 19°C maximum daytime temperature in May in Hamilton19
  • 24°C maximum daytime temperature in June in Hamilton24
  • 27°C maximum daytime temperature in July in Hamilton27
  • 26°C maximum daytime temperature in August in Hamilton26
  • 21°C maximum daytime temperature in September in Hamilton21
  • 14°C maximum daytime temperature in October in Hamilton14
  • 8°C maximum daytime temperature in November in Hamilton8
  • 1°C maximum daytime temperature in December in Hamilton1

Hours of Sunshine (daily)

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec

Best time to go for the weather

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Canada

Which is the hottest month in Hamilton?

The hottest time of year in Hamilton is normally July. Expect maximum daytime temperatures to reach 27°C with moderate heat and humidity.

Which month has the most rain in Hamilton?

In terms of rainfall, August is usually the wettest month in Hamilton with 91mm on average. There are normally 9 days in August with some rain.

When is it sunniest in Hamilton?

The sunniest time of year in Hamilton is normally July with bright sunshine on average for 61% of daylight hours; that's 9 hours of sunshine per day.

When is the sea warmest in Hamilton?

The sea is usually at its warmest in Hamilton in August when the water temperature reaches 21°C.

Compare Hamilton weather with the USA

Below the Hamilton weather chart shows average maximum daytime temperature for Hamilton, Ontario, Canada and the USA (Washington).

Maximum daytime temperature (°C)

Hamilton, Ontario, Canada
USA (Washington)

Metric (°C / mm)  |  Imperial (°F / inches)

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