Ottawa weather live forecast

Today's maximum temperature in Ottawa is expected to be 24°C. Select a day from the live weather forecast for Ottawa, Ontario, Canada for more weather parameters.

Friday
4th Sep
24

16

7

4
Saturday
5th Sep
22

15

3

5
Sunday
6th Sep
23

13

9

5
Monday
7th Sep
25

13

10

5
Tuesday
8th Sep
21

12

3

5

5-day weather forecast updated at 04:00 on Friday 4th 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 Friday 4th September 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north-west.

24
°C maximum temperature
16
°C minimum temperature
scattered clouds
7
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
24
°C wind chill
14
kph wind from NW

Ottawa weather for Saturday 5th September 2026

Expect broken clouds in Ottawa, Ontario with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-east.

22
°C maximum temperature
15
°C minimum temperature
broken clouds
3
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
11
kph wind from NE

Ottawa weather for Sunday 6th September 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-east.

23
°C maximum temperature
13
°C minimum temperature
scattered clouds
9
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from NE

Ottawa weather for Monday 7th September 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the west.

25
°C maximum temperature
13
°C minimum temperature
scattered clouds
10
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from W

Ottawa weather for Tuesday 8th September 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 light breeze of 12 kph from the north.

21
°C maximum temperature
12
°C minimum temperature
broken clouds
3
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
21
°C wind chill
12
kph wind from N

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Ontario - quick facts
Flight time^✝	8 hours
Time difference	UK -5 to -6 hours
Language(s)	English, French
Currency	Canadian Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes