Ottawa weather forecast

  • Wednesday
    18th May
    Scattered clouds
  • Thursday
    19th May
    Mostly cloudy with rain (10-20 mm of rainfall expected)
  • Friday
    20th May
    Isolated thunderstorms (10-20 mm of rainfall expected)
  • Saturday
    21st May
    Isolated thunderstorms (10-20 mm of rainfall expected)
  • Sunday
    22nd May
    Mostly cloudy with rain (10-20 mm of rainfall expected)

Last updated at 04:02 on Wednesday 18th May 2022 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.

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Ottawa weather forecast by day

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

Ottawa weather for Wednesday 18th May 2022

Below is the Ottawa weather forecast for Wednesday 18th May 2022. Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 18°C, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-west.

  • 18°C maximum temperature18
    °C maximum temperature
  • 6°C minimum temperature6
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 13 hours of bright sunshine13
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 18°C wind chill18
    °C wind chill
  • Light breeze of 12 kph from the North-West12
    kph wind from NW

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Ottawa weather for Thursday 19th May 2022

Below is the Ottawa weather forecast for Thursday 19th May 2022. Expect mostly cloudy with rain in Ottawa, Ontario with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 87% chance of some rain and a light breeze of 12 kph from the east.

  • 15°C maximum temperature15
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 87% chance of some rain87
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 15°C wind chill15
    °C wind chill
  • Light breeze of 12 kph from the East12
    kph wind from E

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Ottawa weather for Friday 20th May 2022

Below is the Ottawa weather forecast for Friday 20th May 2022. Expect isolated thunderstorms in Ottawa, Ontario with a maximum temperature of 26°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 78% chance of some rain and a gentle breeze of 19 kph from the south.

  • 26°C maximum temperature26
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 78% chance of some rain78
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 19 kph from the South19
    kph wind from S

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Ottawa weather for Saturday 21st May 2022

Below is the Ottawa weather forecast for Saturday 21st May 2022. Expect isolated thunderstorms in Ottawa, Ontario with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 71% chance of some rain and a gentle breeze of 13 kph from the south-west.

  • 28°C maximum temperature28
    °C maximum temperature
  • 19°C minimum temperature19
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 71% chance of some rain71
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 13 kph from the South-West13
    kph wind from SW

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Ottawa weather for Sunday 22nd May 2022

Below is the Ottawa weather forecast for Sunday 22nd May 2022. Expect mostly cloudy with rain in Ottawa, Ontario with a maximum temperature of 19°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 59% chance of some rain and a moderate breeze of 20 kph from the west.

  • 19°C maximum temperature19
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 59% chance of some rain59
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 19°C wind chill19
    °C wind chill
  • Moderate breeze of 20 kph from the West20
    kph wind from W

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

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