nomadseason

May Weather in Hamilton, Canada

Last updated: June 18, 2025

In May, the average temperature in Hamilton, Canada hovers around 13°C (55°F), providing a comfortable climate. Expect a minimum chill of -1°C (30°F) and a maximum warmth of 29°C (84°F). With 99 mm (3.9 in) of precipitation spread over 12 days, don't forget your umbrella! The air remains quite humid at 82%, adding a touch of moisture to the atmosphere.

May Temperature in Hamilton

In May in Hamilton, the average temperature is 13°C (55°F), with maximums reaching 29°C (84°F) and minimums dropping as low as -1°C (30°F). This diverse temperature range makes Hamilton a unique destination for travelers, offering the chance to experience both warm and crisp conditions.

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

The chart illustrates May 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, May typically has an average temperature of 13°C (55°F), with highs reaching up to 29°C (84°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec272834435566737265544033
Data source: Temperature data for Hamilton generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Hamilton

In Hamilton in May, the total precipitation amount is 99 mm (3.9 in) recorded over a span of 12 days.

May Precipitation Trends in Hamilton

The chart displays monthly precipitation patterns in Hamilton, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Hamilton, May typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec76816811199898878671118180
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Hamilton

In Hamilton in May, humidity is 82%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities sticky and uncomfortable for traveling.

May Average Humidity in Hamilton

This chart illustrates the average monthly humidity levels in Hamilton, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Hamilton is approximately 82%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Hamilton

In Hamilton in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Hamilton.

Maximum UV Index Levels in Hamilton for May

The chart shows the monthly maximum UV Index (UVI) for Hamilton in May, 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 May, the maximum UV index in Hamilton typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Hamilton May 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 May 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 May’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 May’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

Compare Hamilton's Climate with Cities Worldwide