Climate in Ottawa, Canada

Ottawa, the capital city of Canada, is situated in Eastern Canada, along the Ottawa River in the southeastern part of the province of Ontario. Known for its rich history, cultural diversity, and stunning architecture, Ottawa experiences a humid continental climate, characterized by four distinct seasons, significant temperature variations throughout the year, and varying precipitation patterns. To provide a comprehensive description of Ottawa’s climate, it’s essential to examine various aspects, including temperature, precipitation, humidity, and seasonal variations.

Geographical Location:

According to andyeducation, Ottawa is located in the eastern part of Canada, relatively close to the U.S.-Canada border. Its geographical location along the Ottawa River and proximity to the Great Lakes region significantly influence its climate.

Seasonal Overview:

Ottawa experiences four distinct seasons: spring, summer, autumn (fall), and winter. Each season brings unique weather patterns and temperature ranges.

Spring (March to May):

  • March: Spring begins in March with average high temperatures ranging from 0°C to 4°C (32°F to 39°F). Winter snow starts to melt, and the city gradually transitions from colder conditions.
  • April: April sees a further increase in temperatures, with average highs ranging from 10°C to 15°C (50°F to 59°F). Spring blossoms and foliage emerge.
  • May: May marks the arrival of milder and more comfortable weather, with average highs between 17°C and 22°C (63°F to 72°F). Flowers bloom, and outdoor activities become more popular.

Summer (June to August):

  • June: Summer officially begins in June, with average high temperatures ranging from 22°C to 26°C (72°F to 79°F). Ottawa’s parks and outdoor attractions are bustling.
  • July: July is the warmest month, with average highs between 25°C and 29°C (77°F to 84°F). It’s a popular time for festivals and outdoor events.
  • August: August continues the warm summer weather, with average highs ranging from 23°C to 27°C (73°F to 81°F). Ottawa’s outdoor recreational opportunities are in full swing.

Autumn (September to November):

  • September: Autumn begins in September with average highs between 19°C and 23°C (66°F to 73°F). The foliage starts to change colors, creating a beautiful landscape.
  • October: October brings cooler temperatures, with average highs ranging from 13°C to 16°C (55°F to 61°F). Fall foliage is at its peak.
  • November: November sees a significant drop in temperatures, with average highs between 4°C and 7°C (39°F to 45°F). The city starts to prepare for winter.

Winter (December to February):

  • December: Winter officially arrives in December, with average highs ranging from -1°C to 1°C (30°F to 34°F). Snowfall becomes common, and winter activities commence.
  • January: January is the coldest month, with average highs between -6°C and -4°C (21°F to 25°F). Snow covers the city.
  • February: February remains cold, with average highs ranging from -5°C to -3°C (23°F to 27°F). Winter sports and festivals continue.


According to existingcountries, Ottawa receives precipitation throughout the year, primarily in the form of rain in the warmer months and snow in the colder months. The annual average precipitation in Ottawa is approximately 945 millimeters (37 inches).

  • Rainfall: The wettest months for rainfall are June, July, and August, with occasional thunderstorms bringing heavy downpours. The annual average rainfall in Ottawa is around 885 millimeters (34.8 inches).
  • Snowfall: Winter in Ottawa brings significant snowfall, with December, January, and February being the snowiest months. The annual average snowfall in Ottawa is approximately 224 centimeters (88 inches).

Humidity and Wind:

Humidity levels in Ottawa are generally moderate, with higher humidity during the warmer months and lower humidity during the colder months. Humidity can make hot summer days feel warmer and cold winter days feel colder. Winds in Ottawa are generally light to moderate, with occasional strong gusts during storms or winter cold fronts.

Climate Variability and Extreme Weather Events:

Ottawa occasionally experiences extreme weather events, particularly in the winter. These events can include heavy snowstorms, ice storms, and extreme cold snaps. Summers can also bring heatwaves, with high temperatures and high humidity.

In addition to seasonal variability, Ottawa can also experience occasional severe weather events, including thunderstorms with lightning, hail, and heavy rainfall. Flooding can occur along the Ottawa River during periods of heavy rain or snowmelt in the spring.


In summary, Ottawa, Canada, experiences a humid continental climate with four distinct seasons. Summers are warm and pleasant, winters are cold and snowy, and spring and autumn provide transitional and picturesque landscapes. The city’s climate, combined with its rich history and cultural attractions, offers a diverse range of activities and experiences throughout the year, making it an attractive destination for both residents and visitors.