Cornwall Weather in December
Cornwall in December
The short of it: Cornwall in December averages a high of 1 °C (34 °F) and a low of -6 °C (22 °F), with 122 mm (4.8 in) of rain and about 8 h 38 min of daylight. Rated 1 of 5 for a visit; the best months are July and August. Source: TerraClimate climate normals, 1991–2020.
Average high 1° · low -6° · rain 122 mm · daylight 8 h 38 min
✦ Travel with care for a visit · best months: July & August
Thirty years of records give Cornwall an average December high of 1°, a low of -6° and some 122 mm of rain. Highs fall 6° against November, to near 1°; nights run about -6°. It is the wettest month of the year here, about 122 mm. The first lasting snow usually comes now.
The sun is up for about 8 h 38 min in mid-December, 43 minutes less than a month before.
For the traveller: pack a heavy coat, gloves and a scarf, and an oilskin besides. The Almanac rates December 1 of 5 for a visit; the finest months here are July and August.
Against its neighbours, Cornwall runs cooler than most and drier than most in December. Clyde River, 4 km to the WSW, sees much the same highs.
December in Cornwall, by the numbers
- Warmth rank
- 9th warmest of 12
- Rain rank
- 1st wettest of 12
- Versus November
- 6° colder, 7.0 mm more rain
- Versus January
- 4° warmer
- Day–night spread
- 7°
- Snow season
- Dec–Apr
- Daylight, mid-month
- 8 h 38 min
- Average wind
- 21 km/h
Neighbouring Towns
December averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Clyde RiverPrince Edward Island | 4 km WSW | 1° | -6° | 119 mm |
| Lewis PointPrince Edward Island | 5 km ENE | 1° | -6° | 128 mm |
| West RoyaltyPrince Edward Island | 6 km NE | 1° | -6° | 128 mm |
| BrightonPrince Edward Island | 6 km E | 2° | -5° | 127 mm |
| Spring ParkPrince Edward Island | 6 km ENE | 2° | -5° | 127 mm |
| Downtown CharlottetownPrince Edward Island | 7 km E | 2° | -5° | 127 mm |
| CharlottetownPrince Edward Island | 7 km E | 2° | -5° | 127 mm |
| Mt. EdwardPrince Edward Island | 8 km ENE | 1° | -6° | 128 mm |