Sweden · 1991–2020 normal
Köpmanholmen in
December.
Typical December weather in Köpmanholmen: -1.4°C by day, -8.9°C at night, 72 mm of rain over 11.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high-1.4°C
Typical low-8.9°C
Rain72 mm
Wet days11.4
Comfort score 5 this month (July leads the year at 66). Daylight is calculated as 4 h 42 from latitude 63.17°. Open-water sea temperature is 3.4°C (16 km from the place centre).
Event window
Long northern nights in December
At 63.2° the calculated mid-month daylight is 4 h 42. That darkness, not an aurora observation, is why this latitude is sought for northern or southern lights in December. Typical nights are -8.9°C.
Event window
Frost-level nights in December
The measured night-time normal is -8.9°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 2699777
- NOAA station
- SWE00139956 · VASTMARKUM_A
- Station distance
- 15.9 km from the place centre
- Coverage
- Strong coverage · 25 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.