Koli National Park Weather: December
 |
Average Day Temperature: | 21.8°F |
|
Average Night Temperature: | 20.4°F |
|
Sea Water Temperature: | 35.0°F |
|
Number of Sunny Days: | 1 day |
| Sunshine Hours: | 4.6 - 5.4 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.8 in | |
|
Number of Snowy Days: | 2 days |
| detailed information | ||
forecast
| Koli National Park |
Temperature
| Koli National Park |
Air Temperature in December, °F
The highest day temperature in December 2025 was 38°F. The lowest night temperature was 1°F. The average values for day and night temperatures during December were 25.6°F и 26.0°F respectivly.
Koli National Park Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Koli National Park was 36.3°F. The maximum and minimum values were 32.4°F and 39.2°F respectively.
Most of the days in December are gloomy but you can also expect sunny days.
Precipitation Totals in December, in
Precipitation total in December for Koli National Park is 1.8 in.
The average wind speed in December is 9.3 mph. It makes December one of the most windy months of the year for Koli National Park.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Koli National Park in December is 0.8 hours.
Koli National Park on the Weather Map
| Espoo |  |
+10 |
| Helsinki | |
+8 |
| Juvaskyla |  |
-2 |
| Kemi | |
-12 |
| Koli National Park |  |
-4 |
| Kotka | |
+12 |
| Lahti | |
+6 |
| Lappeenranta | |
+8 |
| Oulu | |
-10 |
| Pori | |
+6 |
| Saariselka | |
-20 |
| Savolinna | |
+6 |
| Turku | |
+6 |
| Vaasa | |
+2 |
| Vantaa | |
+8 |
| 0600 |  |
2°F | SW 7 mph |
| 0900 |  |
8°F | SW 9 mph |
| 1200 | |
12°F | SW 12 mph |
| 1500 | |
14°F | SW 12 mph |
| 1800 | |
12°F | SW 12 mph |
| 2100 | |
14°F | SW 12 mph |
| 0000 | |
14°F | SW 12 mph |
| 0300 | |
14°F | SW 13 mph |