nomadseason

October Weather in Oshawa, Canada

Last updated: June 18, 2025

In Oshawa, Canada, the average temperature in October hovers around 11°C (51°F), making it a moderately cool time of year. Expect temperatures to dip as low as -3°C (28°F) and rise up to a delightful 28°C (83°F). With an average precipitation of 99 mm (3.9 in) spread over 14 days, don’t forget your umbrella! Additionally, the air is quite moist, with an average humidity of 83%, creating a unique climate experience.

October Temperature in Oshawa

In October in Oshawa, the average temperature is 11°C (51°F). Maximums can reach 28°C (83°F), while minimums can drop as low as -3°C (28°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!

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

The chart illustrates October temperature patterns in Oshawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oshawa, October typically has an average temperature of 11°C (51°F), with highs reaching up to 28°C (83°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec232432435566727063513729
Data source: Temperature data for Oshawa 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.

October Precipitation in Oshawa

In Oshawa in October, the precipitation amount is 99 mm (3.9 in) over the course of 14 days.

October Precipitation Trends in Oshawa

The chart displays monthly precipitation patterns in Oshawa, 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 Oshawa, October typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec65696211298909310873998375
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in Oshawa

In Oshawa in October, humidity is 83%. With an average temperature of 11°C (51°F), this humidity feels like a chilly dampness that clings to your skin, making any outdoor adventures a bit uncomfortable and best enjoyed with layered clothing and a light raincoat.

October Average Humidity in Oshawa

This chart illustrates the average monthly humidity levels in Oshawa, 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 Oshawa 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 Oshawa

In Oshawa 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 Oshawa.

Maximum UV Index Levels in Oshawa for October

The chart shows the monthly maximum UV Index (UVI) for Oshawa 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 Oshawa typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Oshawa 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 Oshawa Compares to Other Months

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

This table compares monthly weather conditions in Oshawa, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)65 mm (2.5 inches)91%low
February Weather-4°C (24°F)69 mm (2.7 inches)91%moderate
March Weather0°C (32°F)62 mm (2.4 inches)88%moderate
April Weather6°C (43°F)112 mm (4.4 inches)88%very high
May Weather13°C (56°F)98 mm (3.9 inches)82%very high
June Weather19°C (66°F)90 mm (3.5 inches)79%very high
July Weather22°C (72°F)92 mm (3.6 inches)77%very high
August Weather21°C (70°F)108 mm (4.2 inches)72%very high
September Weather17°C (63°F)73 mm (2.9 inches)76%high
October Weather11°C (51°F)99 mm (3.9 inches)83%moderate
November Weather3°C (37°F)83 mm (3.2 inches)88%moderate
December Weather-2°C (29°F)75 mm (2.9 inches)87%low

Compare Oshawa's Climate with Cities Worldwide