Ottawa
October
Weather in Ottawa for October 2025
Your guide to Ottawa weather in October - trends and predictions
In general, the average temperature in Ottawa at the beginning of October is 20.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.3 °C by the end of October.
The climate of Ottawa in October is notably wet, with an average of 12 rainy days.
With an average of 2 snowy days, Ottawa enjoys a light touch of snow in October.
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17
Dry days
12
Rainy days
2
Snow days
15°/7°
Temperatures
16 km/h
Avg max wind
80 %
Avg humidity
Ottawa in October average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2 21° | 3 24° | 4 24° | 5  22° | ||
| 6  17° | 7 15° | 8 11° | 9 11° | 10 11° | 11 14° | 12 12° |
| 13 11° | 14 11° | 15 8° | 16 12° | 17 15° | 18 15° | 19 13° |
| 20 14° | 21 18° | 22  13° | 23 13° | 24 10° | 25 13° | 26 13° |
| 27 12° | 28 10° | 29 8° | 30  11° | 31 12° |
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Temperatures trend during October in Ottawa
See the weather trend as well as the moving average line
October weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Oct. | Mist | 21° /12° | 0 mm | 0 cm | |
| 2 Oct. | Mist | 21° /11° | 15.2 mm | 0 cm | |
| 3 Oct. | Mist | 24° /11° | 0 mm | 0 cm | |
| 4 Oct. | Mist | 24° /11° | 0 mm | 0 cm | |
| 5 Oct. | Overcast | 22° /14° | 0 mm | 0 cm | |
| 6 Oct. | Light rain shower | 17° /10° | 9.7 mm | 0 cm | |
| 7 Oct. | Light rain shower | 15° /7° | 20 mm | 0 cm | |
| 8 Oct. | Patchy rain possible | 11° /4° | 0.1 mm | 0 cm | |
| 9 Oct. | Light rain shower | 11° /3° | 0.9 mm | 0.4 cm | |
| 10 Oct. | Light rain shower | 11° /5° | 1.4 mm | 0 cm | |
| 11 Oct. | Light rain shower | 14° /5° | 2.8 mm | 0 cm | |
| 12 Oct. | Patchy rain possible | 12° /5° | 1.9 mm | 0 cm | |
| 13 Oct. | Patchy rain possible | 11° /3° | 0 mm | 0 cm | |
| 14 Oct. | Patchy rain possible | 11° /4° | 0 mm | 0 cm | |
| 15 Oct. | Patchy rain possible | 8° /4° | 0.1 mm | 0 cm | |
| 16 Oct. | Patchy rain possible | 12° /5° | 0 mm | 0 cm | |
| 17 Oct. | Overcast | 15° /4° | 0 mm | 0 cm | |
| 18 Oct. | Patchy rain possible | 15° /3° | 0 mm | 0 cm | |
| 19 Oct. | Overcast | 13° /5° | 0 mm | 0 cm | |
| 20 Oct. | Light rain shower | 14° /8° | 0.8 mm | 0 cm | |
| 21 Oct. | Light rain shower | 18° /8° | 6.4 mm | 0 cm | |
| 22 Oct. | Light rain | 13° /6° | 5.3 mm | 0 cm | |
| 23 Oct. | Overcast | 13° /4° | 6.6 mm | 0 cm | |
| 24 Oct. | Overcast | 10° /3° | 0 mm | 0 cm | |
| 25 Oct. | Light rain | 13° /5° | 4.1 mm | 0 cm | |
| 26 Oct. | Light drizzle | 13° /7° | 4.8 mm | 0 cm | |
| 27 Oct. | Light drizzle | 12° /6° | 0.9 mm | 0 cm | |
| 28 Oct. | Patchy rain possible | 10° /2° | 0.6 mm | 0 cm | |
| 29 Oct. | Overcast | 8° /1° | 2.5 mm | 0 cm | |
| 30 Oct. | Moderate or heavy snow showers | 11° /5° | 0.6 mm | 0.5 cm | |
| 31 Oct. | Overcast | 12° /5° | 0.2 mm | 0 cm | |
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Important Notice
Our weather forecast for Ottawa in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ottawa forecast closer to your planned date for the most up-to-date weather information.
Ottawa in October - FAQ
What are the expected maximum and minimum temperatures in Ottawa during October?
During October, expect a variety of temperatures with highs around 15° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ottawa during October?
Significant rainfall exceeding 104.6 mm is expected in Ottawa during October, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
Is snowfall common in Ottawa during October?
Ottawa experiences an average snowfall of 1.8 cm during October, occurring over 2 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in Ottawa during October?
The average wind speed in Ottawa during October is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Ottawa
Explore the daily rainfall trends and prepare for Ottawas October weather 💧
October snowfall in Ottawa
Track daily snowfall levels and discover Ottawa’s snowy potential this October ❄️
UV exposure in Ottawa during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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