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Ottawa
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Ottawa Weather and climate
Data source：Meteostat
Update date：2025-09
Ottawa year round climate
- Spring (March–May): Average -32–58°F, the climate gradually warms, but early spring can still be chilly, with occasional rainfall. Snow is possible in March. April brings warmer weather and blooming flowers, while May offers pleasant temperatures. Common activities: flower viewing, outdoor walks, cycling. Suggested clothing: layers, including warm base layers, a light jacket, and comfortable shoes.
- Summer (June–August): Average 65–71°F, warm and humid climate with frequent rainfall, especially in August. Common activities: boating, picnics, hiking. Suggested clothing: light and breathable clothing, rain gear.
- Autumn (September–November): Average 61–37°F, temperatures gradually decrease, the weather is dry and comfortable, with occasional rainfall. The vibrant fall foliage is a highlight of autumn. Common activities: leaf peeping, outdoor activities such as hiking. Suggested clothing: warm jacket, comfortable long pants and shoes.
- Winter (December–February): Average -8.5–-36.9°F, cold climate with frequent snow and ice, low temperatures require adequate warmth. Common activities: skiing, ice skating, indoor activities. Suggested clothing: heavy warm clothing, including a down jacket, warm hat, gloves and scarf, waterproof and snow-proof shoes.
Ottawa climatological average
Annual average temperature: approx. 46.4°F / Annual rainfall: approx. 956 mm / Summer humidity: 65%–75% / Rainiest month: August
Ottawa monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
16.7°F
59.7
February
19.9°F
44.1
March
31.8°F
54.8
April
44.6°F
100.9
May
58.6°F
76.9
June
65.8°F
112.6
July
71.1°F
109.5
August
67.6°F
142.5
September
61.3°F
54.1
October
50.2°F
57.5
November
37.2°F
51.2
December
27.1°F
92.4
Ottawa weather for the next seven days
10/10
Friday
Sunny
57.2°F/30.7°F
10/11
Saturday
Partly Cloudy
67.8°F/43°F
10/12
Sunday
Overcast
57.9°F/44.8°F
10/13
Monday
Overcast
53.6°F/46.4°F
10/14
Tuesday
Partly Cloudy
63.2°F/46.9°F
10/15
Wednesday
Partly Cloudy
59.5°F/44.1°F
10/16
Thursday
Overcast
52.3°F/43.2°F
