Ottawa weather forecast

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Last updated at 04:02 on Saturday 18th September 2021 GMT

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The 5-day weather forecast for Ottawa, Ontario is provided by the Swiss meteorological agency, MeteoBlue. Find out more about our data sources.

Ottawa weather forecast by day

Below are the detailed weather forecasts for Ottawa for the next 5 days.

Ottawa weather for Saturday 18th September 2021

Below is the Ottawa weather forecast for Saturday 18th September 2021. Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north.

  • 23°C maximum temperature23
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 16 kph from the North16
    kph wind from N

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Ottawa weather for Sunday 19th September 2021

Below is the Ottawa weather forecast for Sunday 19th September 2021. Expect clear skies in Ottawa, Ontario with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.

  • 22°C maximum temperature22
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Clear skies
    clear skies
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 22°C wind chill22
    °C wind chill
  • Light breeze of 7 kph from the North7
    kph wind from N

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Ottawa weather for Monday 20th September 2021

Below is the Ottawa weather forecast for Monday 20th September 2021. Expect clear skies in Ottawa, Ontario with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-east.

  • 25°C maximum temperature25
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Clear skies
    clear skies
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 25°C wind chill25
    °C wind chill
  • Gentle breeze of 13 kph from the South-East13
    kph wind from SE

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Ottawa weather for Tuesday 21st September 2021

Below is the Ottawa weather forecast for Tuesday 21st September 2021. Expect mostly cloudy with light rain in Ottawa, Ontario with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 35% chance of some rain and a moderate breeze of 20 kph from the south.

  • 25°C maximum temperature25
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 35% chance of some rain35
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 25°C wind chill25
    °C wind chill
  • Moderate breeze of 20 kph from the South20
    kph wind from S

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Ottawa weather for Wednesday 22nd September 2021

Below is the Ottawa weather forecast for Wednesday 22nd September 2021. Expect mostly cloudy with rain in Ottawa, Ontario with a maximum temperature of 22°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 30-40 mm of rainfall expected with 95% chance of some rain and a gentle breeze of 15 kph from the south.

  • 22°C maximum temperature22
    °C maximum temperature
  • 17°C minimum temperature17
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 95% chance of some rain95
    % chance of some rain
  • 30-40 mm of rainfall expected<40
    mm of rainfall expected
  • 22°C wind chill22
    °C wind chill
  • Gentle breeze of 15 kph from the South15
    kph wind from S

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Metric (°C / mm)  |  Imperial (°F / inches)

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