If you plan to visit Ottawa in October, the weather is typically alright, with an average high temperature of +55°F during the day and approximately 3 sunny days. Expect some rainy, though, as there are typically 14 rainy days in the month and around 90 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+55°F
Avg. max. temperature
+18°F
Min.
+86°F
Max.
90 mm
Total precipitation
76%
Avg. humidity
3 m/s
Avg. wind
3 ☀️
Sunny Days
12 ⛅️
Cloudy
14 🌦
Rainy
Our opinion: Ottawa has OK weather in October.
Average temperature in Ottawa in October
Here are the expected maximum, average and minimum temperatures in Ottawa for October based on the historical data.
Last Year
Historical Data
Going from a maximum of +86°F during the day to a minimum of +27°F during the night, the temperature in October averages around +61°F.
The average maximum temperature goes down 67% by the end of the month, compared with the beginning of the month, from +77°F to +37°F.
Is Ottawa warm or cold in October?
Ottawa is typically mild in October.
Maximum temperatures go down compared to the previous month from +70°F to +55°F. The minimum temperature also goes down from +52°F to +39°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how October is compared to other months in Ottawa:
Climate in Ottawa in October
Ottawa weather looks like this, on average, in October and the surrounding months.
September
October
November
Avg. temperature
+70°F
+55°F
+43°F
Min. temperature
+27°F
+18°F
-4°F
Max. temperature
+95°F
+86°F
+73°F
Rainfall
88 mm
90 mm
53 mm
Wind
2 m/s
3 m/s
3 m/s
Humidity
75%
76%
76%
Air pressure
1016 HPa
1015 HPa
1016 HPa
Sunny days
4
3
2
Cloudy days
12
12
12
Rainy days
12
14
8
Snowy days
0
1
8
October weather is still as ok as in September.It’s getting colder in October. From +70°F in the day, the average maximum temperature lowers to +55°F.Prepare for more rain. Average rainfall goes from 88 mm to 90 mm.Humidity rises from 75% to 76%.Winds are stronger in comparison to September, going up from 2 m/s to 3 m/s on average.The days becoming less sunny, going from 4 sunny days in September to 3 in October.
November brings much the same weather, it remains ok.
Wind speed in Ottawa in October based on historical data.
Last Year
Historical Data
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Ottawa is gradually increasing during October, going from 2 m/s to 2 m/s over the course of the month.
Rain
Amount of rainfall in mm during October in Ottawa based on historical data.
Last Year
Historical Data
Typically, there is a 55% chance of rain on an average day in October, with total rainfall of approximately 135 mm. The maximum amount of rainfall per day is around 35 mm, which is moderate rain.October is a pretty wet month with over 17 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
October is one of the rainiest months in Ottawa, here is a comparison with other months, total mm:
Ottawa wettest month is July, where a typical day has a 35% chance of precipitation and 91 mm of rainfall per day. February, on the other hand, is the driest month with a mere 3% chance of precipitation and 12 mm of rainfall per day.
Snow
Amount of snow in mm during October in Ottawa based on historical data.
Last Year
Historical Data
Typically, there is a 0% chance of snow on an average day in October, with a total monthly snowfall of approximately 3 mm.
Here’s how October is compared with other months in the amount of snow, total mm:
How was the weather last October in Ottawa?
This is the weather in Ottawa in October 2023:
1 October
☀️
+78°F
2 October
☀️
+77°F
3 October
☀️
+85°F
4 October
☀️
+86°F
5 October
☁️
+80°F
6 October
☁️
+72°F
7 October
🌧️
+66°F
8 October
☁️
+54°F
9 October
🌧️
+50°F
10 October
🌧️
+53°F
11 October
🌧️
+56°F
12 October
☁️
+53°F
13 October
☁️
+58°F
14 October
☁️
+58°F
15 October
☀️
+53°F
16 October
☁️
+57°F
17 October
☁️
+57°F
18 October
☁️
+58°F
19 October
☁️
+62°F
20 October
☁️
+65°F
21 October
🌧️
+59°F
22 October
🌧️
+48°F
23 October
☀️
+51°F
24 October
☁️
+54°F
25 October
🌧️
+64°F
26 October
☁️
+63°F
27 October
🌧️
+67°F
28 October
☁️
+66°F
29 October
☁️
+47°F
30 October
☁️
+40°F
31 October
☀️
+38°F
In October 2023 Ottawa had 7 sunny days, 16 cloudy days, and 8 rainy days. The average maximum temperature was +61°F, with an absolute maximum of +86°F and a minimum of +37°F. The average humidity was 83%, with a maximum of 100% and a minimum of 40%. The average wind speed was 3 m/s, with a maximum of 12 m/s and a minimum of 0 m/s.
Are you planning a trip in October?
Climate Change Over the Years
This is how Ottawa climate has changed over the last 43 years.
The climate in Ottawa in October has not changed that much over the last 43 years.
The average temperature was the lowest in 1992 (+51°F) and the highest in 2012 (+56°F). The driest year was 1985 with only 469 mm of rainfall, and the wettest year was 2017 with 1378 mm.
FAQ
Frequently asked questions about the weather in Ottawa in October:
Is October a good time to visit Ottawa?
It’s always a good time to visit Ottawa, but the weather is changeable in October, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Ottawa in October?
October has mild temperatures in Ottawa. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Is Ottawa rainy in October?
Ottawa is often rainy in October. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Ottawa in October?
Usually, it’s not very sunny in Ottawa in October, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Ottawa, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.