Ottawa weather in October 2025

Expect daytime maximum temperatures of 13°C in Ottawa in October based on long-term weather averages. There are 4 hours of sunshine per day on average with 12 days with some rainfall and typically 71 mm of rainfall in the month.

  • 13°C maximum daytime temperature in October in Ottawa13
    13°C max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in October in Ottawa12
    12 days with some rainfall
  • 4°C minimum night-time temperature in October in Ottawa4
    4°C min night temperature
  • 11 hours of daylight per day in October in Ottawa11
    11 hours of daylight per day
  • No heat & humidity in October in Ottawa0
    No heat & humidity
  • 71 mm monthly rainfall in October in Ottawa71
    71 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Ottawa3
    3 (Moderate) UV index

More about Ottawa

Ottawa by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ontario

International Drivers Association: Get driving permit in 8 minutes

  • Order International Driving Permit (IDP) in 8 minutes online
  • Recognised in over 150 countries in Asia, Europe, Africa & more
  • Accepted by rental car agencies worldwide
Go to International Drivers Association deal >>

The October weather guide for Ontario (Ottawa) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about Ontario

How warm is it in Ottawa in October?

Daytime temperatures usually reach 13°C in Ottawa in October, falling to 4°C at night.

How sunny is it in Ottawa in October?

There are normally 4 hours of bright sunshine each day in Ottawa in October - that's 40% of daylight hours.

Does it rain in Ottawa in October?

There are usually 12 days with some rain in Ottawa in October and the average monthly rainfall is 71mm.

Ottawa October sunrise & sunset times

Browse the sunrise and sunset times for Ottawa in October 2025. Select a month to view Ottawa sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:01 17:42
Thursday, 16th October 2025 06:21 17:15
Friday, 31st October 2025 06:41 16:51

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^