Ottawa weather live forecast

Today's maximum temperature in Ottawa is expected to be 66°F. Select a day from the live weather forecast for Ottawa, Ontario, Canada for more weather parameters.

5-day weather forecast updated at 04:01 on Saturday 6th September 2025 GMT

More about Ottawa

Ottawa by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ontario

Marriott discount code: Kids stay & eat for free

  • Kids stay & eat for free at Marriot Bonvoy
  • Destinations include Europe, Middle East & Africa
  • Valid for up to 2 adults & 2 kids aged up to 12
Show discount codeShow discount code ******ZJ6
Redeem Marriott discount code >>

View all Marriott offers

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 6th September 2025

Expect broken clouds in Ottawa, Ontario with a maximum temperature of 66°F, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the south-west.

  • 66°F maximum temperature66
    °F maximum temperature
  • 54°F minimum temperature54
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 11 mph from the South-West11
    mph wind from SW

Back to top

Ottawa weather for Sunday 7th September 2025

Expect mostly cloudy with light rain in Ottawa, Ontario with a maximum temperature of 64°F, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 60% chance of some rain and a gentle breeze of 11 mph from the west.

  • 64°F maximum temperature64
    °F maximum temperature
  • 52°F minimum temperature52
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 60% chance of some rain60
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 64°F wind chill64
    °F wind chill
  • Gentle breeze of 11 mph from the West11
    mph wind from W

Back to top

Ottawa weather for Monday 8th September 2025

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 66°F, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the west.

  • 66°F maximum temperature66
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 9 mph from the West9
    mph wind from W

Back to top

Ottawa weather for Tuesday 9th September 2025

Expect clear skies in Ottawa, Ontario with a maximum temperature of 73°F, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the south.

  • 73°F maximum temperature73
    °F maximum temperature
  • 46°F minimum temperature46
    °F 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
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 8 mph from the South8
    mph wind from S

Back to top

Ottawa weather for Wednesday 10th September 2025

Expect broken clouds in Ottawa, Ontario with a maximum temperature of 77°F, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-west.

  • 77°F maximum temperature77
    °F maximum temperature
  • 52°F minimum temperature52
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    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 9 mph from the South-West9
    mph wind from SW

Back to top

Auto Europe: up to 25% off worldwide car hire

  • Save up to 25% on global car rentals with Auto Europe
  • Book car hire across the USA, Europe, Asia & beyond
  • Travel before 31st December 2025 (inclusive)
Go to Auto Europe deal >>

Expires at 23:59 on Sunday 7th Sep 2025 · View all Auto Europe offers

Metric (°C)  |  Imperial (°F)

Back to top

More about Ontario

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^