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Ottawa

Ottawa 1
Travel guide
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Travel guide

Top 10 things to do in Ottawa

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

10/28
Wednesday
Overcast
7.1°C/-0.8°C
10/29
Thursday
Sunny
18°C/1.8°C
10/30
Friday
Sunny
10.6°C/4.2°C
10/31
Saturday
Sunny
8.7°C/-0.7°C
11/1
Sunday
Sunny
13.7°C/0.2°C
11/2
Monday
Partly Cloudy
12.6°C/4.4°C
11/3
Tuesday
Light rain
9.7°C/3.2°C

Ottawa travel FAQs and useful info

What is the best time to visit?

Summer and autumn are the best times to visit as the weather is mild during these seasons and tulip festivals and light shows are also held during this time.

Which attractions are must-sees?

Parliament Hill, Rideau Canal and the Canadian War Museum are must-see attractions.