Ottawa weather live forecast

Today's maximum temperature in Ottawa is expected to be 26°C. Select a day from the live weather forecast for Ottawa, Ontario, Canada for more weather parameters.

Tuesday
11th Aug
26

17

11

6
Wednesday
12th Aug
24

16

4

5
Thursday
13th Aug
23

16

5

3
Friday
14th Aug
22

14

7

5
Saturday
15th Aug
22

12

8

6

5-day weather forecast updated at 04:00 on Tuesday 11th 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 Tuesday 11th August 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 26°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the west.

26
°C maximum temperature
17
°C minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
26
°C wind chill
12
kph wind from W

Ottawa weather for Wednesday 12th August 2026

Expect isolated thunderstorms in Ottawa, Ontario with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 51% chance of some rain and a light breeze of 8 kph from the west.

24
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
5
UV index (Moderate)
51
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
8
kph wind from W

Ottawa weather for Thursday 13th August 2026

Expect isolated thunderstorms in Ottawa, Ontario with a maximum temperature of 23°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 60% chance of some rain and a light breeze of 12 kph from the west.

23
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
3
UV index (Moderate)
60
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
12
kph wind from W

Ottawa weather for Friday 14th August 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north-west.

22
°C maximum temperature
14
°C minimum temperature
scattered clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
16
kph wind from NW

Ottawa weather for Saturday 15th August 2026

Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 22°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.

22
°C maximum temperature
12
°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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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