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.

• Wednesday
  23rd Sep
  19
  6
  
  12
  5
• Thursday
  24th Sep
  18
  7
  
  12
  5
• Friday
  25th Sep
  23
  7
  
  12
  4
• Saturday
  26th Sep
  23
  10
  
  9
  4
• Sunday
  27th Sep
  21
  11
  
  4
  5

5-day weather forecast updated at 04:00 on Wednesday 23rd September 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 Wednesday 23rd September 2026

Expect clear skies in Ottawa, Ontario with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the east.

• 19
  °C maximum temperature
• 6
  °C minimum temperature
• 
  clear skies
• 12
  hours of sunshine
• 5
  UV index (Moderate)
• 0
  mm of rainfall expected
• 0
  no heat & humidity
• 12
  kph wind from E

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Ottawa weather for Thursday 24th September 2026

Expect clear skies in Ottawa, Ontario with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-east.

• 18
  °C maximum temperature
• 7
  °C minimum temperature
• 
  clear skies
• 12
  hours of sunshine
• 5
  UV index (Moderate)
• 0
  mm of rainfall expected
• 0
  no heat & humidity
• 8
  kph wind from NE

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Ottawa weather for Friday 25th September 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north.

• 23
  °C maximum temperature
• 7
  °C minimum temperature
• 
  scattered clouds
• 12
  hours of sunshine
• 4
  UV index (Moderate)
• 0
  mm of rainfall expected
• 23
  °C wind chill
• 10
  kph wind from N

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Ottawa weather for Saturday 26th September 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north.

• 23
  °C maximum temperature
• 10
  °C minimum temperature
• 
  scattered clouds
• 9
  hours of sunshine
• 4
  UV index (Moderate)
• 0
  mm of rainfall expected
• 23
  °C wind chill
• 13
  kph wind from N

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Ottawa weather for Sunday 27th September 2026

Expect broken clouds in Ottawa, Ontario with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-east.

• 21
  °C maximum temperature
• 11
  °C minimum temperature
• 
  broken clouds
• 4
  hours of sunshine
• 5
  UV index (Moderate)
• 0
  mm of rainfall expected
• 0
  no heat & humidity
• 12
  kph wind from NE

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Virgin Atlantic: Worldwide flights sale now on

Sale

• Book Virgin Atlantic flights from Heathrow & Manchester
• Fly to popular destinations in the USA, Caribbean & beyond
• Travel before 31st August 2027 (inclusive)

Go to Virgin Atlantic deal >>

Expires at 23:59 on Wednesday 30th Sep 2026 · View all Virgin Atlantic offers

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