Cornwall in December
3.4out of 10
Not the best time
Cold: highs around 0°C. Frequent rain: about 12 rainy days.
0°CAvg high
-7°CAvg low
12Rainy days (83 mm)
8:36 hDaylight
07:37Sunrise · 16:13 Sunset
Why this score
- Cold: highs around 0°C
- Frequent rain: about 12 rainy days
- Nights fall to about -7°C
What to wear and pack
- Winter coat, hat and scarf
- Rain jacket or compact umbrella
- Gloves for freezing mornings
How reliable is the forecast?
Rain in December varies a lot between years (±3.1 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -3°C | -12°C | 73 mm | 12 | – | – | 3.5 |
| February | -2°C | -11°C | 62 mm | 10 | – | – | 3.7 |
| March | 4°C | -6°C | 76 mm | 11 | – | – | 4.2 |
| April | 12°C | 2°C | 101 mm | 12 | – | – | 5.7 |
| May | 20°C | 9°C | 98 mm | 13 | – | – | 6.9 |
| June | 24°C | 13°C | 105 mm | 12 | – | – | 7.3 |
| July | 26°C | 16°C | 100 mm | 13 | – | – | 7.3 |
| August | 25°C | 16°C | 94 mm | 12 | – | – | 7.5 |
| September | 21°C | 11°C | 92 mm | 11 | – | – | 7.5 |
| October | 14°C | 5°C | 104 mm | 12 | – | – | 6.0 |
| November | 7°C | -1°C | 84 mm | 12 | – | – | 4.8 |
| December | 0°C | -7°C | 83 mm | 12 | – | – | 3.4 |
Frequently asked questions
How hot is Cornwall in December?
Daytime highs average 0°C and nights about -7°C.
When is the best time to visit Cornwall?
The best months are August, September, June, July.