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Ottawa
Top 10 things to do in Ottawa
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Ongoing promotions in Ottawa
Best time to visit Ottawa
Data source：Meteostat
Last updated：2025-09
Weather in Ottawa throughout the year
- Spring (March–May): Average -0.1–14.8°C, 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 18.8–21.7°C, 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 16.3–2.9°C, 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–-2.7°C, 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.
Weather in Ottawa
Annual average temperature: approx. 8°C / Annual rainfall: approx. 956 mm / Summer humidity: 65%–75% / Rainiest month: August
Ottawa weather by month
Month
Temperature (°C)
Rainfall (mm)
January
-8.5°C
59.7
February
-6.7°C
44.1
March
-0.1°C
54.8
April
7°C
100.9
May
14.8°C
76.9
June
18.8°C
112.6
July
21.7°C
109.5
August
19.8°C
142.5
September
16.3°C
54.1
October
10.1°C
57.5
November
2.9°C
51.2
December
-2.7°C
92.4
7-day weather forecast for Ottawa
11/4
Wednesday
Overcast
20.1°C/11°C
11/5
Thursday
Patchy rain nearby
19.1°C/10.6°C
11/6
Friday
Overcast
13.4°C/9.1°C
11/7
Saturday
Patchy rain nearby
9.4°C/4.1°C
11/8
Sunday
Sunny
9.4°C/-0.1°C
11/9
Monday
Cloudy
7.3°C/2.4°C
11/10
Tuesday
Cloudy
9.9°C/1.9°C
