Ottawa weather live forecast

Today's maximum temperature in Ottawa is expected to be 19°C. Select a day from the live weather forecast for Ottawa, Ontario, Canada for more weather parameters.

  • Monday
    20th Oct
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Tuesday
    21st Oct
    Mostly cloudy with light rain (0-2 mm of rainfall expected)
  • Wednesday
    22nd Oct
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Thursday
    23rd Oct
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Friday
    24th Oct
    Broken clouds

5-day weather forecast updated at 04:02 on Monday 20th October 2025 GMT

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The 5-day weather forecast for Ontario (Ottawa) 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 Monday 20th October 2025

Expect mostly cloudy with light rain in Ottawa, Ontario with a maximum temperature of 19°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 74% chance of some rain and a moderate breeze of 22 kph from the west.

  • 19°C maximum temperature19
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 74% chance of some rain74
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 22 kph from the West22
    kph wind from W

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Ottawa weather for Tuesday 21st October 2025

Expect mostly cloudy with light rain in Ottawa, Ontario with a maximum temperature of 15°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 66% chance of some rain and a moderate breeze of 20 kph from the west.

  • 15°C maximum temperature15
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 66% chance of some rain66
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 15°C wind chill15
    °C wind chill
  • Moderate breeze of 20 kph from the West20
    kph wind from W

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Ottawa weather for Wednesday 22nd October 2025

Expect mostly cloudy with light rain in Ottawa, Ontario with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 95% chance of some rain and a gentle breeze of 13 kph from the south-west.

  • 13°C maximum temperature13
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 95% chance of some rain95
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 13°C wind chill13
    °C wind chill
  • Gentle breeze of 13 kph from the South-West13
    kph wind from SW

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Ottawa weather for Thursday 23rd October 2025

Expect mostly cloudy with light rain in Ottawa, Ontario with a maximum temperature of 11°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 62% chance of some rain and a gentle breeze of 13 kph from the west.

  • 11°C maximum temperature11
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 62% chance of some rain62
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 13 kph from the West13
    kph wind from W

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Ottawa weather for Friday 24th October 2025

Expect broken clouds in Ottawa, Ontario with a maximum temperature of 9°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.

  • 9°C maximum temperature9
    °C maximum temperature
  • 5°C minimum temperature5
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 7°C wind chill7
    °C wind chill
  • Gentle breeze of 14 kph from the West14
    kph wind from W

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

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