Ontario - Canada weather in October 2025
October
Ontario - Canada weather in October 2025
October
Day
14 °C
Night
5 °C
Sea
9 °C
Precipitation
78 mm
in month
Rainy days
11 days
in month
Daylight
11 hours
average
Sunshine
5 hours
average
Humidity
76 %
Day
14 °C
Night
5 °C
Sea
9 °C
Precipitation
78 mm
in month
Rainy days
11 days
in month
Daylight
11 hours
average
Sunshine
5 hours
average
Humidity
76 %
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Weather overview and FAQs
Weather overview
In October in Ontario, the average air temperature ranges from 14 °C (58 °F) during the day to 5 °C (42 °F) at night. There are 12 days of rain on average, where the rainfall is 78 mm (3.06 in).
Is October a good month to visit Ontario?
Ontario can be visited in October - the weather will be moderate. A relatively low temperature of 14 °C (58 °F) may be ideal for walking or outdoor activities, but some people may have a different idea of the holiday. The night temperature of 5 °C (42 °F) is not inviting for evening and night activities except for visiting a bar and having beer or two.
What temperature can I expect during the day in October in Ontario?
In Ontario in October, the average daily temperatures will be 14 °C (58 °F). Don't forget a sweater and light or normal jacket, but also pack light clothing in case the temperatures are above average. The weather at this time can be somewhat changeable and a wide range of clothing can become handy.
What is the night temperature in October in Ontario?
The average night temperature in Ontario in October is 5 °C (42 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.
How many rainy days can I expect in October in Ontario?
There are 12 days, which are rainy in October in Ontario, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.7 days of the week, or in general - 38 % days.
How long is the day (from dawn till dusk) in Ontario in October?
The length of daylight in Ontario in October is 11 hours.
How heavy is the precipitation in Ontario in October?
In Ontario in October, there is 78 mm (3.06 in) rainfall, which means on average 3 mm (0.10 in) rainfall per day.
How many sunny hours can I expect in October in Ontario?
There is an average length of sunshine of 5 hours per day in Ontario in October.
Is there a dry season in October in Ontario?
No, October is not a dry month in Ontario, expect rain approximately 12 days in a month.
What is the temperature trend in October in Ontario?
During October in Ontario, the day temperatures are decreasing - from 18 °C (64 °F) at the beginning of the month to 11 °C (52 °F) at the end of the month.
How windy is it in Ontario in October?
In Ontario in October, there will be an average wind scale of 4.
Is Ontario rainier in October than in November?
No, October in Ontario is not a rainier month than November.
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