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Canada weather

Weather in Oshawa for December 2025

Your guide to Oshawa weather in December - trends and predictions

    Snow Forecast ❄️

  • Oshawa typically experiences moderate snowfall in December, with an average of 10 snowy days.
    According to Oshawa snow forecast for December 2025, 6 snowy days are expected in the next 2 weeks. The closest date with snow is Saturday, 20 December.

    • Temperatures

  • Until now, December 2025 in Oshawa is cooler than usual, with temperatures averaging -0.4 °C, this is -2.5 °C below the typical seasonal average.

  • Expect cooler weather in the next days in Oshawa with the forecast suggesting a temperature of -1.4 °C, lower than the historical average.

  • In general, the average temperature in Oshawa at the beginning of December is 1.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 0 °C by the end of December.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
10
Dry days
Average rainy days
11
Rainy days
Average snowy days
10
Snow days
Average temperatures
2°/-1°
Temperatures
Average wind speed
25 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Oshawa Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate rain
2°
2
Light rain
3°
3
Moderate or heavy rain shower
2°
4
Overcast
1°
5
Overcast
1°
6
Light snow
1°
7
Moderate or heavy snow showers
1°
8
Fog
2°
9
Moderate snow
5°
10
Moderate rain
5°
11
Light snow
-0°
12
Blowing snow
2°
13
Patchy moderate snow
1°
14
Sunny
-7°
15
Overcast
-2°
16
Cloudy
0°
17
Patchy rain possible
4°
18
Moderate or heavy snow showers
5°
19
Blowing snow
-2°
20
Light freezing rain
2°
21
Moderate or heavy snow showers
2°
22
Partly cloudy
-2°
23
Patchy rain possible
5°
24
Light snow
-8°
25
Light freezing rain
-4°
26
Heavy snow
-4°
27
Partly cloudy
-9°
28
Patchy rain possible
4°
29
Light drizzle
6°
30
Sunny
5°
31
Light snow
2°

Temperatures trend during December in Oshawa

See the weather trend as well as the moving average line

December weather in Oshawa day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Moderate rain
Moderate rain
 2° /-3° 3 mm 0 cm
2 Dec. Light rain
Light rain
 3° /-1° 5 mm 2.3 cm
3 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 2° /-2° 7.2 mm 0 cm
4 Dec. Overcast
Overcast
 1° /-3° 7.6 mm 1.1 cm
5 Dec. Overcast
Overcast
 1° /-4° 4.2 mm 0 cm
6 Dec. Light snow
Light snow
 1° /-4° 3.2 mm 2.3 cm
7 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 1° /-2° 10.6 mm 7.7 cm
8 Dec. Fog
Fog
 2° /-4° 1.1 mm 0 cm
9 Dec. Moderate snow
Moderate snow
 5° /-1° 16.3 mm 1 cm
10 Dec. Moderate rain
Moderate rain
 5° /0° 15 mm 1.2 cm
11 Dec. Light snow
Light snow
 0° /-3° 0.4 mm 0.3 cm
12 Dec. Blowing snow
Blowing snow
 2° /-4° 0 mm 0 cm
13 Dec. Patchy moderate snow
Patchy moderate snow
 1° /-4° 2.2 mm 1.6 cm
14 Dec. Sunny
Sunny
 -7° /-15° 0 mm 0 cm
15 Dec. Overcast
Overcast
 -2° /-10° 0 mm 0 cm
16 Dec. Cloudy
Cloudy
 0° /-6° 0 mm 0 cm
17 Dec. Patchy rain possible
Patchy rain possible
 4° /-3° 0.2 mm 0 cm
18 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 5° /-10° 2.6 mm 0 cm
19 Dec. Blowing snow
Blowing snow
 -2° /-5° 0.1 mm 0 cm
20 Dec. Light freezing rain
Light freezing rain
 2° /-6° 19.3 mm 1.6 cm
21 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /-8° 1.6 mm 0 cm
22 Dec. Partly cloudy
Partly cloudy
 -2° /-11° 0 mm 0 cm
23 Dec. Patchy rain possible
Patchy rain possible
 5° /-4° 2.1 mm 0.1 cm
24 Dec. Light snow
Light snow
 -8° /-12° 0.6 mm 0.4 cm
25 Dec. Light freezing rain
Light freezing rain
 -4° /-11° 0.4 mm 0.2 cm
26 Dec. Heavy snow
Heavy snow
 -4° /-9° 2 mm 1.4 cm
27 Dec. Partly cloudy
Partly cloudy
 -9° /-11° 0 mm 0 cm
28 Dec. Patchy rain possible
Patchy rain possible
 4° /3° 0.3 mm 0 cm
29 Dec. Light drizzle
Light drizzle
 6° /3° 22.2 mm 0 cm
30 Dec. Sunny
Sunny
 5° /1° 3.9 mm 0 cm
31 Dec. Light snow
Light snow
 2° /0° 2 mm 0.4 cm
Next
Important Notice
Our weather forecast for Oshawa in December 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 Oshawa forecast closer to your planned date for the most up-to-date weather information.
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Oshawa in December - FAQ

What are the expected maximum and minimum temperatures in Oshawa during December?
Brace for cold days with temperatures not exceeding 2° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Oshawa during December?
Significant rainfall exceeding 169.7 mm is expected in Oshawa during December, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Oshawa in December 2025?
Oshawa experiences an average snowfall of 34.735 cm during December, occurring over 10 days.
What are the typical wind conditions in Oshawa during December?
The average wind speed in Oshawa during December is 25 km/h, suggesting breezy to windy conditions, depending on your activities.

Oshawa snow forecast December 2025

Track daily snowfall levels and discover Oshawa’s snowy potential this December ❄️
On average, Oshawa sees 10 snowy days during December, with approximately 34.7 cm of total snowfall.

December rainfall patterns in Oshawa

Explore the daily rainfall trends and prepare for Oshawas December weather 💧
Typically, Oshawa has 11 rainy days in December with a total of 169.7 mm of rainfall.

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Get accurate weather forecasts for Oshawa, located at latitude 43.9 and longitude -78.85. Stay updated with localized weather information tailored for Oshawa.

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