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October Weather in Hamilton, Canada

Last updated: June 18, 2025

In Hamilton, Canada, the average temperature in October hovers around 12°C (54°F), with a minimum of 0°C (33°F) and a maximum reaching 28°C (83°F). Expect 111 mm (4.4 in) of precipitation over approximately 14 days that month, contributing to a high average humidity of 83%. Be prepared for a mix of cool and wet weather during your visit!

October Temperature in Hamilton

In October in Hamilton, the average temperature is 12°C (54°F). The maximum can reach 28°C (83°F) and the minimum can be as low as 0°C (33°F). Travelers should be prepared for a range of weather conditions, from mild days to chilly nights.

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

The chart illustrates October 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, October typically has an average temperature of 12°C (54°F), with highs reaching up to 28°C (83°F) and lows dropping to around 0°C (33°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.

October Precipitation in Hamilton

In Hamilton in October, the precipitation amount is 111 mm (4.4 in) during 14 days, indicating a significant amount of rainfall for that period.

October Precipitation Trends in Hamilton

The chart displays monthly precipitation patterns in Hamilton, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Hamilton, October typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec76816811199898878671118180
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Hamilton

In Hamilton in October humidity is 83%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making outdoor exploration feel sticky and uncomfortable, which can dampen the excitement of traveling.

October Average Humidity in Hamilton

This chart illustrates the average monthly humidity levels in Hamilton, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Hamilton is approximately 83%, 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in Hamilton

In Hamilton in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Hamilton.

Maximum UV Index Levels in Hamilton for October

The chart shows the monthly maximum UV Index (UVI) for Hamilton in October, 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 October, the maximum UV index in Hamilton typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Hamilton October 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 October 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 October’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 October’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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