Measurements:
°C
°F
Ottawa
16°F
N 2 mph
Feels like: 16°F
Precip: 0%
World Resorts Canada Ottawa Weather September Weather in Ottawa

Ottawa Weather: September

Average Day Temperature: 70.6°F
Average Night Temperature: 55.3°F
Number of Sunny Days: 12 days
Sunshine Hours: 11.7 - 13.3 hours
Number of Rainy Days: 4 days
Precipitation Totals: 1.8 in

Air Temperature in September, °F

Select Year: 2024 2023 2022

The highest day temperature in September 2024 was 88°F. The lowest night temperature was 41°F. The average values for day and night temperatures during September were 72.1°F и 55.8°F respectivly.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Ottawa is 1.8 in. It makes september one of the least rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 6.9 mph. This value is relatively stable throughout the year.

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 Ottawa in September is 7.4 hours.

Best Time to Visit Ottawa
The most sunny months:
July 14 days
August 14 days
September 12 days
The most warm months:
July 81.3 °F
August 79.1 °F
June 73.8 °F
The most cold months:
January 15.5 °F
February 18.4 °F
December 24.7 °F
The most rainy months:
June 6 days
April 6 days
August 5 days
The most windy months:
April 9 mph
March 9 mph
February 9 mph

Ottawa on the Weather Map

Canada Resorts:
NAME
Barrie +28
Halifax +30
Moncton +26
Montreal +12
Niagara Falls +26
Ottawa +16
Quebec +10
Saint John +30
St. John's +32
Tofino +44
Toronto +30
Vancouver +40
Victoria +46
Winnipeg +30
Yellowknife -12
24 Hours Weather Forecast
Ottawa
Local time: 11:42
26 dec, thursday
1200 16°F
N
2 mph
1500 18°F
N
1 mph
1800 18°F
NW
1 mph
2100 14°F
SW
2 mph
27 dec, friday
0000 14°F
S
2 mph
0300 18°F
W
3 mph
0600 20°F
SW
2 mph
0900 20°F
SE
1 mph