Weather in Ottawa by month: what to expect

Оттава experiences distinct seasons, each bringing its own character to the city. Winters here are long and cold, with temperatures often dropping below freezing from December through March. Snow is common, and the city embraces winter activities during these months. Spring arrives gradually, with April and May offering a mix of lingering chill and warmer days as the city thaws.

Summers in Оттава are warm and pleasant, with June through August bringing the most comfortable weather for exploring. The city comes alive with festivals and outdoor events, though occasional rain showers can occur. By September, temperatures begin to cool, and autumn colors transform the landscape, making it a scenic time to visit before the winter sets in again.

Winter in Оттава is cold, with average temperatures hovering around -8.5 °C in January and -7.1 °C in February. Nighttime lows can drop to -12.4 °C, so layers and warm clothing are essential. By March, temperatures start to rise, though it remains chilly with averages near -0.8 °C.

Оттава warms up significantly in May, with average temperatures reaching 13.9 °C, and by June, summer arrives in full swing. The warmest months are July and August, with averages of 22.2 °C and 20.6 °C respectively, and daytime highs often climbing to 27.8 °C. Evenings can still be cool, especially in September, when temperatures begin to dip toward 16.3 °C.

Autumn in Оттава sees a steady decline in temperatures, with October averaging 10.1 °C and November bringing a return to near-freezing conditions at 1.9 °C. By December, winter is back, with averages dropping to -4.4 °C and the city preparing for another cold season.

Оттава receives precipitation year-round, though the amounts vary by season. Winter months like January and February see around 60 mm of snowfall each, while March brings slightly more at 64.2 mm. Spring showers increase in April, with 91.6 mm of precipitation, making it one of the wetter months.

Summer in Оттава is the rainiest season, with July and August recording 94.3 mm and 113.7 mm of precipitation respectively. These months can bring sudden downpours, so packing a light rain jacket is a good idea. September and October see a mix of rain and cooler weather, with October receiving 97.2 mm of precipitation.

As winter approaches, precipitation in Оттава decreases slightly, with November and December averaging around 60 mm and 80.5 mm respectively. Snow becomes more frequent, and the city’s landscape transforms under a blanket of white.

For a winter trip to Оттава, pack warm, layered clothing to handle the cold. A heavy coat, gloves, a hat, and waterproof boots are essential, especially if you plan to explore outdoor attractions. Thermal layers will help you stay comfortable in temperatures that can drop below -10 °C.

Spring and autumn in Оттава require versatile clothing, as temperatures can fluctuate. A light jacket or sweater is useful for cooler mornings and evenings, while a waterproof layer will help with spring showers or autumn rains. Comfortable walking shoes are a must for exploring the city’s parks and trails.

Summer in Оттава calls for lightweight, breathable clothing, but it’s wise to pack a light jacket or sweater for cooler evenings. A compact umbrella or rain jacket will prepare you for occasional summer showers. Sunglasses and sunscreen are also recommended, as the sun can be strong during the day.