Finland · 1991–2020 normal
Siikainen in
December.
Typical December weather in Siikainen: -0.8°C by day, -5.8°C at night, 56 mm of rain over 11.9 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high-0.8°C
Typical low-5.8°C
Rain56 mm
Wet days11.9
Comfort score 5 this month (July leads the year at 74). Daylight is calculated as 5 h 15 from latitude 61.88°. Open-water sea temperature is 4.1°C (23 km from the place centre).
Event window
Long northern nights in December
At 61.9° the calculated mid-month daylight is 5 h 15. That darkness, not an aurora observation, is why this latitude is sought for northern or southern lights in December. Typical nights are -5.8°C.
Event window
Frost-level nights in December
The measured night-time normal is -5.8°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 637020
- NOAA station
- FIE00143381 · KANKAANPAA NIINISALO PUOLUSTUS
- Station distance
- 34.2 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.