City break

Hamilton, Ontario weather in April

Temperature, rain and sunshine in April: long-term averages from 30 years of weather data, not a forecast.

30

Holiday weather in April

Poor

Best time to visit: June – September

What is the weather like in Hamilton, Ontario in April?

In April, Hamilton, Ontario is cold: daytime highs average 9 °C, and nights cool down to about 3 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 94 mm in total. All in all, April is not an ideal month for a holiday in Hamilton, Ontario.

April compared

How the weather changes from March to May. Tap a month to open it.

MarchMarAprilAprMayMay
Score253069
Day4°9°16°
Night−3°3°10°
Sun5 h6 h8 h
Rain days101211

More details for April

Daylight
13 h 22 min06:39 – 20:00
UV index
7 · highclear sky, noon (estimate)All months
Muggy days
0 daysdew point 18 °C or moreAll months
Wind
21 km/haverage daily peakAll months
Cloud cover
62 %on averageAll months
Hot days
0 days30 °C or moreAll months
Snow days
1 day1 cm or more of fresh snowAll months
Time zone
UTC−4America/Toronto

How the score comes together

  • Temperatureweight 50 %10 %
  • Sunshineweight 20 %57 %
  • Few rainy daysweight 30 %45 %

Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.

What to pack in April

  • Sunscreen
  • Sunglasses & sun hat
  • Warm jacket
  • Rain jacket or umbrella

Hamilton, Ontario in April: quick answers

Is Hamilton, Ontario hot in April?

No. In April, Hamilton, Ontario is cold: daytime highs average 9 °C and nights drop to about 3 °C.

Does it rain much in Hamilton, Ontario in April?

Rain is frequent, with about 12 rainy days and 94 mm in total.

Hamilton, Ontario month by month

Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences