Ottawa weather live forecast

Today's maximum temperature in Ottawa is expected to be 23°C. Select a day from the live weather forecast for Ottawa, Ontario, Canada for more weather parameters.

• Friday
  14th Aug
  23
  15
  
  8
  6
• Saturday
  15th Aug
  23
  13
  
  10
  6
• Sunday
  16th Aug
  21
  14
  
  2
  6
• Monday
  17th Aug
  24
  16
  
  6
  4
• Tuesday
  18th Aug
  25
  15
  
  13
  6

5-day weather forecast updated at 04:00 on Friday 14th August 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 Friday 14th August 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 23°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north-west.

• 23
  °C maximum temperature
• 15
  °C minimum temperature
• 
  scattered clouds
• 8
  hours of sunshine
• 6
  UV index (High)
• 0
  mm of rainfall expected
• 0
  no heat & humidity
• 10
  kph wind from NW

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Ottawa weather for Saturday 15th August 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 23°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north.

• 23
  °C maximum temperature
• 13
  °C minimum temperature
• 
  scattered clouds
• 10
  hours of sunshine
• 6
  UV index (High)
• 0
  mm of rainfall expected
• 23
  °C wind chill
• 8
  kph wind from N

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Ottawa weather for Sunday 16th August 2026

Expect mostly cloudy with rain in Ottawa, Ontario with a maximum temperature of 21°C, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 53% chance of some rain and a light breeze of 10 kph from the east.

• 21
  °C maximum temperature
• 14
  °C minimum temperature
• 
  mostly cloudy with rain
• 2
  hours of sunshine
• 6
  UV index (High)
• 53
  % chance of some rain
• <10
  mm of rainfall expected
• 21
  °C wind chill
• 10
  kph wind from E

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Ottawa weather for Monday 17th August 2026

Expect sunshine and showers in Ottawa, Ontario with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 19% chance of some rain and a gentle breeze of 14 kph from the north-west.

• 24
  °C maximum temperature
• 16
  °C minimum temperature
• 
  sunshine and showers
• 6
  hours of sunshine
• 4
  UV index (Moderate)
• 19
  % chance of some rain
• <5
  mm of rainfall expected
• 24
  °C wind chill
• 14
  kph wind from NW

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Ottawa weather for Tuesday 18th August 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 25°C, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-west.

• 25
  °C maximum temperature
• 15
  °C minimum temperature
• 
  scattered clouds
• 13
  hours of sunshine
• 6
  UV index (High)
• 0
  mm of rainfall expected
• 0
  no heat & humidity
• 11
  kph wind from SW

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