Finland · 1991–2020 normal
Marttila in
December.
Typical December weather in Marttila: 0.9°C by day, -4.2°C at night, 58 mm of rain over 10.7 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high0.9°C
Typical low-4.2°C
Rain58 mm
Wet days10.7
Comfort score 5 this month (July leads the year at 84). Daylight is calculated as 5 h 43 from latitude 60.58°.
Event window
Long northern nights in December
At 60.6° the calculated mid-month daylight is 5 h 43. That darkness, not an aurora observation, is why this latitude is sought for northern or southern lights in December. Typical nights are -4.2°C.
Event window
Frost-level nights in December
The measured night-time normal is -4.2°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 646511
- NOAA station
- FIE00142035 · SALO KARKKA
- Station distance
- 26.2 km from the place centre
- Coverage
- Good coverage · 23 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.