Cornwall (Newquay)
December
Weather in Cornwall for December 2025
Your guide to Cornwall weather in December - trends and predictions
In general, the average temperature in Cornwall at the beginning of December is 10 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 11 °C by the end of December.
Cornwall experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 97.7 mm.
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Temperatures
Rain 🌧️
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3
Dry days
28
Rainy days
0
Snow days
10°/8°
Temperatures
39 km/h
Avg max wind
82 %
Avg humidity
Cornwall Weather December
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  9° | 2  8° | 3 9° | 4 11° | 5 10° | 6 12° | 7 11° |
| 8 10° | 9 10° | 10  10° | 11 10° | 12 10° | 13 9° | 14 10° |
| 15 11° | 16 12° | 17  12° | 18  13° | 19 10° | 20 11° | 21 12° |
| 22 10° | 23 11° | 24 12° | 25 12° | 26 12° | 27 11° | 28 11° |
| 29 10° | 30 11° | 31 10° |
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Temperatures trend during December in Cornwall
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. | Cloudy | 9° /6° | 2.1 mm | 2 | |
| 2 Dec. | Patchy rain possible | 8° /5° | 1.9 mm | 3 | |
| 3 Dec. | Light rain shower | 9° /6° | 9.2 mm | 3 | |
| 4 Dec. | Light rain shower | 11° /7° | 5.2 mm | 3 | |
| 5 Dec. | Patchy rain possible | 10° /8° | 1.9 mm | 3 | |
| 6 Dec. | Light rain shower | 12° /7° | 2.5 mm | 3 | |
| 7 Dec. | Light rain shower | 11° /8° | 8.4 mm | 3 | |
| 8 Dec. | Light rain shower | 10° /8° | 1.7 mm | 3 | |
| 9 Dec. | Light rain shower | 10° /8° | 3.8 mm | 3 | |
| 10 Dec. | Moderate rain | 10° /7° | 4.9 mm | 3 | |
| 11 Dec. | Patchy rain possible | 10° /6° | 0.9 mm | 3 | |
| 12 Dec. | Light rain shower | 10° /7° | 2.8 mm | 3 | |
| 13 Dec. | Patchy rain possible | 9° /7° | 3 mm | 3 | |
| 14 Dec. | Patchy rain possible | 10° /7° | 0.8 mm | 3 | |
| 15 Dec. | Patchy rain possible | 11° /9° | 0.4 mm | 3 | |
| 16 Dec. | Patchy rain possible | 12° /9° | 0.3 mm | 3 | |
| 17 Dec. | Overcast | 12° /9° | 2.1 mm | 3 | |
| 18 Dec. | Light drizzle | 13° /9° | 9.6 mm | 3 | |
| 19 Dec. | Light rain | 10° /8° | 4.3 mm | 3 | |
| 20 Dec. | Light rain shower | 11° /8° | 1.9 mm | 3 | |
| 21 Dec. | Patchy rain possible | 12° /9° | 1.2 mm | 3 | |
| 22 Dec. | Patchy rain possible | 10° /8° | 3.4 mm | 3 | |
| 23 Dec. | Patchy rain possible | 11° /8° | 1.7 mm | 3 | |
| 24 Dec. | Light drizzle | 12° /10° | 1.3 mm | 3 | |
| 25 Dec. | Light drizzle | 12° /9° | 2.6 mm | 3 | |
| 26 Dec. | Light rain | 12° /9° | 2.2 mm | 3 | |
| 27 Dec. | Moderate rain | 11° /9° | 4.7 mm | 3 | |
| 28 Dec. | Light rain shower | 11° /8° | 2.1 mm | 3 | |
| 29 Dec. | Patchy light drizzle | 10° /8° | 2.2 mm | 4 | |
| 30 Dec. | Moderate rain | 11° /7° | 4.4 mm | 3 | |
| 31 Dec. | Light rain shower | 10° /7° | 4.2 mm | 3 | |
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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.
Cornwall in December - FAQ
What are the expected maximum and minimum temperatures in Cornwall during December?
During December, expect a variety of temperatures with highs around 10° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cornwall during December?
Moderate rainfall is anticipated in Cornwall during December, with a total of 97.7 mm spread over approximately 28 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Cornwall during December?
The average wind speed in Cornwall during December is 39 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Cornwall
Explore the daily rainfall trends and prepare for Cornwalls December weather 💧
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