Cornwall
December
Weather in Cornwall for December 2026
Your guide to Cornwall weather in December - trends and predictions
Cornwall typically experiences moderate snowfall in December, with an average of 10 snowy days.
In general, the average temperature in Cornwall at the beginning of December is -0.5 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of -0.9 °C by the end of December.
Is December a good time to visit Cornwall? check out the best time to travel to Cornwall page.
✨ Is December a good time to visit Cornwall? – Ask the AI Weatherman
Snow Forecast ❄️
Temperatures
More
17
Dry days
4
Rainy days
10
Snow days
0°/-5°
Temperatures
18 km/h
Avg max wind
81 %
Avg humidity
Cornwall Weather December
Move between months or click on a day
Temperatures trend during December in Cornwall
See the weather trend as well as the moving average line
December weather in Cornwall day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Overcast | 1° /-1° | 0.9 mm | 0 cm | |
| 2 Dec. |  Light freezing rain | 0° /-2° | 4.8 mm | 2.4 cm | |
| 3 Dec. |  Light snow | 0° /-2° | 4.4 mm | 0 cm | |
| 4 Dec. |  Patchy moderate snow | 0° /-5° | 8.2 mm | 6.6 cm | |
| 5 Dec. | Light snow | -1° /-7° | 3.2 mm | 2.4 cm | |
| 6 Dec. |  Freezing fog | -2° /-9° | 0 mm | 0 cm | |
| 7 Dec. | Light snow | -2° /-9° | 2.6 mm | 1.9 cm | |
| 8 Dec. |  Moderate snow | -2° /-8° | 9 mm | 6.5 cm | |
| 9 Dec. | Light snow | 0° /-6° | 7.4 mm | 3.3 cm | |
| 10 Dec. |  Heavy rain | 4° /-2° | 23.7 mm | 5.7 cm | |
| 11 Dec. | Light snow showers | 0° /-4° | 13.3 mm | 3.8 cm | |
| 12 Dec. | Light snow | 0° /-6° | 6.4 mm | 4.6 cm | |
| 13 Dec. | Light snow showers | 0° /-5° | 0.1 mm | 0.1 cm | |
| 14 Dec. | Overcast | -2° /-7° | 0 mm | 0 cm | |
| 15 Dec. |  Sunny | 0° /-6° | 0 mm | 0 cm | |
| 16 Dec. | Overcast | 1° /-4° | 0 mm | 0 cm | |
| 17 Dec. |  Light rain | 5° /0° | 4.5 mm | 0.1 cm | |
| 18 Dec. |  Moderate rain | 5° /-1° | 21.2 mm | 4.1 cm | |
| 19 Dec. | Light snow | 3° /-5° | 13.4 mm | 4.5 cm | |
| 20 Dec. | Overcast | -1° /-5° | 0 mm | 0 cm | |
| 21 Dec. | Overcast | -1° /-7° | 0 mm | 0 cm | |
| 22 Dec. | Sunny | -3° /-10° | 0 mm | 0 cm | |
| 23 Dec. | Light freezing rain | -3° /-7° | 3.9 mm | 2.6 cm | |
| 24 Dec. | Moderate snow | -1° /-4° | 8.4 mm | 5.9 cm | |
| 25 Dec. | Light snow | -1° /-8° | 2.6 mm | 1.9 cm | |
| 26 Dec. | Overcast | -4° /-8° | 0.2 mm | 0 cm | |
| 27 Dec. | Light rain | -2° /-6° | 4.5 mm | 0 cm | |
| 28 Dec. |  Patchy rain possible | -1° /-6° | 1.1 mm | 0 cm | |
| 29 Dec. | Heavy rain | 3° /0° | 28.8 mm | 1 cm | |
| 30 Dec. | Patchy rain possible | 0° /-5° | 1.2 mm | 0.3 cm | |
| 31 Dec. | Overcast | -2° /-5° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for Cornwall 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 Cornwall forecast closer to your planned date for the most up-to-date weather information.
Change Month
Cornwall in December - FAQ
What are the expected maximum and minimum temperatures in Cornwall during December?
Brace for cold days with temperatures not exceeding 0° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Cornwall during December?
Significant rainfall exceeding 174 mm is expected in Cornwall during December, occurring over more than 4 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Cornwall in December 2026?
Cornwall experiences an average snowfall of 57.8 cm during December, occurring over 10 days.
What are the typical wind conditions in Cornwall during December?
The average wind speed in Cornwall during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
Cornwall snow forecast December 2026
Track daily snowfall levels and discover Cornwall’s snowy potential this December ❄️
On average, Cornwall sees 10 snowy days during December, with approximately 57.8 cm of total snowfall.
December rainfall patterns in Cornwall
Explore the daily rainfall trends and prepare for Cornwalls December weather 💧
Typically, Cornwall has 4 rainy days in December with a total of 174 mm of rainfall.
Quick links
More Cornwall weather pages
You are here
Where is Cornwall?Get accurate weather forecasts for Cornwall, located at latitude 45.018 and longitude -74.728. Stay updated with localized weather information tailored for Cornwall.
Found a mistake?
We appreciate your attention to details. Tell us here.