Finland · 1991–2020 normal
Merijärvi in
December.
Typical December weather in Merijärvi: -2.8°C by day, -9.6°C at night, 45 mm of rain over 9.8 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high-2.8°C
Typical low-9.6°C
Rain45 mm
Wet days9.8
Comfort score 5 this month (July leads the year at 68). Daylight is calculated as 4 h 06 from latitude 64.30°. Open-water sea temperature is 2.5°C (18 km from the place centre).
Event window
Long northern nights in December
At 64.3° the calculated mid-month daylight is 4 h 06. That darkness, not an aurora observation, is why this latitude is sought for northern or southern lights in December. Typical nights are -9.6°C.
Event window
Frost-level nights in December
The measured night-time normal is -9.6°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 646195
- NOAA station
- FIE00145212 · OULAINEN OHINEVA
- Station distance
- 22.4 km from the place centre
- Coverage
- Good coverage · 17 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.