30YearWeather
Ottawa in October
Ottawa weather in October - Canada
🌤️Mild & Comfortable

Ottawa Weather in October

Plan your October trip to Ottawa, Canada. Based on 30 years of NASA data, expect temperatures of 14°C (high) to 6°C (low), with 27% rain probability and 8 hours of daily sunshine. Pack rain gear for around 18 rainy days.

Avg High
14°C

Hottest around day 1

Avg Low
6°C

Coolest around day 31

Rainy Days
18days

27% avg rain chance

Sunshine
8hrs/day

Autumn season

Ottawa October Weather Calendar

Click any day to see detailed weather information

Day 1
cloudy
Cloudy
18°C23%
Day 2
cloudy
Cloudy
17°C23%
Day 3
partly-cloudy-day
Nice
18°C20%
Day 4
partly-cloudy-day
Nice
17°C20%
Day 5
cloudy
Cloudy
17°C26%
Day 6
cloudy
Cloudy
17°C24%
Day 7
cloudy
Cloudy
16°C26%
Day 8
cloudy
Cloudy
16°C29%
Day 9
cloudy
Cloudy
16°C30%
Day 10
cloudy
Cloudy
15°C23%
Day 11
cloudy
Cloudy
15°C25%
Day 12
cloudy
Cloudy
15°C25%
Day 13
cloudy
Cloudy
15°C27%
Day 14
cloudy
Cloudy
15°C27%
Day 15
cloudy
Cloudy
14°C31%
Day 16
cloudy
Cloudy
13°C28%
Day 17
cloudy
Cloudy
13°C25%
Day 18
cloudy
Cloudy
13°C25%
Day 19
cloudy
Cloudy
13°C27%
Day 20
cloudy
Cloudy
13°C30%
Day 21
cloudy
Cloudy
13°C30%
Day 22
cloudy
Cloudy
12°C31%
Day 23
cloudy
Cloudy
12°C30%
Day 24
cloudy
Cloudy
12°C28%
Day 25
cloudy
Cloudy
11°C25%
Day 26
cloudy
Cloudy
11°C25%
Day 27
cloudy
Cloudy
10°C25%
Day 28
cloudy
Cloudy
10°C28%
Day 29
cloudy
Cloudy
10°C31%
Day 30
cloudy
Cloudy
10°C30%
Day 31
cloudy
Cloudy
10°C35%

Essential Travel Info for Ottawa

🗓️ Best Time to Visit📖 Travel Guide🍴 Food Guide

Currency

CAD

$ Canadian dollar

Language

English

+1 more

Driving

Right side

Connect

The area codes for Ottawa are613and the ...

Safety

Very High Safety

GPI: 1.389

Travel Intelligence

Exclusive flight analytics & health data for Ottawa

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate
48/ 100
Traffic Index

Balanced traffic

Peak Daily Arrivals

0

slots per day

Peak

Jul

Low

Jan

Monthly Traffic Distribution

84
Jan
88
Feb
85
Mar
88
Apr
115
May
166
Jun
177
Jul
173
Aug
175
Sep
157
Oct
129
Nov
154
Dec
Traffic Level
Low Season

Key Connections

Toronto Pearson (YYZ)
Halifax Stanfield (YHZ)
Montreal Trudeau (YUL)
Newark Liberty (EWR)
Vancouver (YVR)

Health & Safety Advisory

CDC travel health recommendations

6 Recommendations
COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Canada. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Canada.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Canada.Rabies is commonly found in some terrestrial wildlife species and bats.If rabies exposures occur while in Canada, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Vaccine isnotrequired.Updated April 23, 2025

Source: CDC Travelers' Health

View Complete Health Guide

Is October a Good Time to Visit Ottawa?

👌Worthwhile timing with some trade-offs
Short Answer

Popular October in Ottawa offers 14°C and 27% rain chance - excellent conditions that attract maximum visitors. Book 3-6 months ahead for best rates.

Decision Factors

Vaccinations required

Yellow Fever

Peak tourist season

89% of annual peak - expect crowds and high prices

Good For

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

Who Should Avoid

  • 💰
    Budget travelers

    Peak season means premium prices everywhere

  • 👴
    Elderly travelers

    76% humidity creates difficult conditions

Related Guides

Best Time to VisitWhen to AvoidOttawa Overview
930 observations30-year historical data
Confidence: 95%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Ottawa in October averages 14°C with 27% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Ottawa in October

What are the temperatures in Ottawa in October?

Daytime highs average 14°C, nights drop to 6°C. Temperatures remain fairly consistent.

How many rainy days in Ottawa in October?

Expect around 18 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Ottawa in October?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is October peak season in Ottawa?

This is shoulder season—moderate prices and manageable crowds.