Ottawa weather live forecast

Today's maximum temperature in Ottawa is expected to be 21°C. Select a day from the live weather forecast for Ottawa, Ontario, Canada for more weather parameters.

5-day weather forecast updated at 04:00 on Saturday 23rd May 2026 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 Saturday 23rd May 2026

Expect broken clouds in Ottawa, Ontario with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the east.

  • 21°C maximum temperature21
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 5 (Moderate)UV5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 21°C wind chill21
    °C wind chill
  • Gentle breeze of 18 kph from the East18
    kph wind from E

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Ottawa weather for Sunday 24th May 2026

Expect cloudy with some rain in Ottawa, Ontario with a maximum temperature of 13°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 96% chance of some rain and a moderate breeze of 20 kph from the south-east.

  • 13°C maximum temperature13
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)UV1
    UV index (Low)
  • 96% chance of some rain96
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 13°C wind chill13
    °C wind chill
  • Moderate breeze of 20 kph from the South-East20
    kph wind from SE

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Ottawa weather for Monday 25th May 2026

Expect sunshine and showers in Ottawa, Ontario with a maximum temperature of 22°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 33% chance of some rain and a light breeze of 11 kph from the west.

  • 22°C maximum temperature22
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 6 (High)UV6
    UV index (High)
  • 33% chance of some rain33
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 22°C wind chill22
    °C wind chill
  • Light breeze of 11 kph from the West11
    kph wind from W

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Ottawa weather for Tuesday 26th May 2026

Expect isolated thunderstorms in Ottawa, Ontario with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 2-5 mm of rainfall expected with 53% chance of some rain and a gentle breeze of 17 kph from the south-west.

  • 27°C maximum temperature27
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)UV6
    UV index (High)
  • 53% chance of some rain53
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 17 kph from the South-West17
    kph wind from SW

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Ottawa weather for Wednesday 27th May 2026

Expect broken clouds in Ottawa, Ontario with a maximum temperature of 25°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-west.

  • 25°C maximum temperature25
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 7 (High)UV7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 25°C wind chill25
    °C wind chill
  • Gentle breeze of 17 kph from the North-West17
    kph wind from NW

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