Measurements:
°C
°F
Oshawa
2°F
W 4 mph
Feels like: -6°F
Precip: 0%
World Resorts Canada Oshawa Weather October Weather in Oshawa

Oshawa Weather: October

Average Day Temperature: 57.9°F
Average Night Temperature: 48.8°F
Sea Water Temperature: 59.5°F
Number of Sunny Days: 11 days
Sunshine Hours: 10.3 - 11.7 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.7 in

Air Temperature in October, °F

Select Year: 2025 2024 2023

The highest day temperature in October 2025 was 82°F. The lowest night temperature was 30°F. The average values for day and night temperatures during October were 60.4°F и 45.6°F respectivly.

Oshawa Water Sea Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Oshawa was 63.6°F. The maximum and minimum values were 54.8°F and 69.6°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during October. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in October, in

Precipitation total in October for Oshawa is 0.7 in. It makes october one of the least rainy months of the year.

Wind Speed in October, mph

The average wind speed in October is 9.9 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Oshawa in October is 6.0 hours.

Best Time to Visit Oshawa
The most sunny months:
September 15 days
August 14 days
July 12 days
The most warm months:
July 79.0 °F
August 78.1 °F
June 72.0 °F
Warmest sea temperature:
August 72.9 °F
September 69.3 °F
July 69.0 °F
The most cold months:
January 24.7 °F
February 25.5 °F
December 33.1 °F
The most rainy months:
July 3 days
April 3 days
March 2 days
The most windy months:
November 11 mph
March 11 mph
February 11 mph

Oshawa on the Weather Map

Canada Resorts:
NAME
Halifax +24
Kingston +4
Moncton +2
Montreal -2
Niagara Falls +10
Ottawa -4
Prince Edward Island +16
Quebec -12
Rocky Harbour +28
St. John's +32
Sydney +34
Toronto +10
Vancouver +42
Victoria +44
Winnipeg +12
24 Hours Weather Forecast
Oshawa
Local time: 00:24
05 dec, friday
0300 4°F
N
4 mph
0600 8°F
N
5 mph
0900 18°F
N
12 mph
1200 24°F
NE
14 mph
1500 28°F
NE
13 mph
1800 28°F
NE
9 mph
2100 30°F
NE
11 mph
06 dec, saturday
0000 30°F
NE
14 mph