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April Weather in Hamilton, Canada

Last updated: June 18, 2025

In April at Hamilton, Canada, the average temperature hovers around 6°C (44°F). While the mercury can dip to a chilly -4°C (25°F), it may also rise to a pleasant 21°C (71°F). Be prepared for some precipitation, with an average of 111 mm (4.4 in) spread over 13 days. Additionally, expect a notably high average humidity of 88%, making for a potentially damp atmosphere.

April Temperature in Hamilton

In April in Hamilton, the average temperature is 6°C (44°F), with maximums reaching 21°C (71°F) and minimums dropping as low as -4°C (25°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm clothing for chilly days and lighter layers for milder moments.

April Weather in Hamilton: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Hamilton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hamilton, April typically has an average temperature of 6°C (44°F), with highs reaching up to 21°C (71°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec272834435566737265544033
Data source: Temperature data for Hamilton generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Hamilton

In Hamilton in April, the precipitation amount reaches 111 mm (4.4 in) over the course of 13 days.

April Precipitation Trends in Hamilton

The chart displays monthly precipitation patterns in Hamilton, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Hamilton, April typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec76816811199898878671118180
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Hamilton

In Hamilton in April humidity is 88%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures less inviting and requiring warm, layered clothing to stay comfortable while exploring.

April Average Humidity in Hamilton

This chart illustrates the average monthly humidity levels in Hamilton, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Hamilton is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Hamilton

In Hamilton in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Hamilton.

Maximum UV Index Levels in Hamilton for April

The chart shows the monthly maximum UV Index (UVI) for Hamilton in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Hamilton typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Hamilton April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in Hamilton Compares to Other Months

Weather in Hamilton varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Hamilton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Hamilton, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)76 mm (3.0 inches)91%low
February Weather-2°C (28°F)81 mm (3.2 inches)91%moderate
March Weather1°C (35°F)68 mm (2.7 inches)88%moderate
April Weather6°C (44°F)111 mm (4.4 inches)88%very high
May Weather13°C (55°F)99 mm (3.9 inches)82%very high
June Weather19°C (66°F)89 mm (3.5 inches)79%very high
July Weather23°C (73°F)88 mm (3.5 inches)77%very high
August Weather22°C (72°F)78 mm (3.1 inches)72%very high
September Weather18°C (65°F)67 mm (2.7 inches)76%high
October Weather12°C (54°F)111 mm (4.4 inches)83%moderate
November Weather4°C (40°F)81 mm (3.2 inches)88%moderate
December Weather0°C (33°F)80 mm (3.1 inches)87%low

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