Ottawa weather forecast

Last updated at 04:02 on Tuesday 16th July 2019 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.

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

Ottawa weather forecast by day

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

Ottawa weather for Tuesday 16th July 2019

Below is the Ottawa weather forecast for Tuesday 16th July 2019. Expect isolated thunderstorms in Ottawa, Ontario with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 61% chance of some rain and a light breeze of 9 kph from the south-west.

  • 28°C maximum temperature28
    °C maximum temperature
  • 18°C minimum temperature18
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 61% chance of some rain61
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 9 kph from the South-West9
    kph wind from SW

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Ottawa weather for Wednesday 17th July 2019

Below is the Ottawa weather forecast for Wednesday 17th July 2019. Expect isolated thunderstorms in Ottawa, Ontario with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 72% chance of some rain and a light breeze of 9 kph from the south-west.

  • 28°C maximum temperature28
    °C maximum temperature
  • 21°C minimum temperature21
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 72% chance of some rain72
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 9 kph from the South-West9
    kph wind from SW

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Ottawa weather for Thursday 18th July 2019

Below is the Ottawa weather forecast for Thursday 18th July 2019. Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south-east.

  • 29°C maximum temperature29
    °C maximum temperature
  • 18°C minimum temperature18
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Little or no wind of 5 kph from the South-East5
    kph wind from SE

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Ottawa weather for Friday 19th July 2019

Below is the Ottawa weather forecast for Friday 19th July 2019. Expect isolated thunderstorms in Ottawa, Ontario with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 50% chance of some rain and a gentle breeze of 16 kph from the south-west.

  • 33°C maximum temperature33
    °C maximum temperature
  • 22°C minimum temperature22
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 50% chance of some rain50
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 16 kph from the South-West16
    kph wind from SW

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Ottawa weather for Saturday 20th July 2019

Below is the Ottawa weather forecast for Saturday 20th July 2019. Expect isolated thunderstorms in Ottawa, Ontario with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 35% chance of some rain and a gentle breeze of 16 kph from the south-west.

  • 34°C maximum temperature34
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 35% chance of some rain35
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 16 kph from the South-West16
    kph wind from SW

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