Lahti Weather: December
 |
Average Day Temperature: | 26.4°F |
|
Average Night Temperature: | 24.4°F |
|
Sea Water Temperature: | 34.2°F |
|
Number of Sunny Days: | 2 days |
| Sunshine Hours: | 5.5 - 6.2 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.8 in | |
|
Number of Snowy Days: | 1 day |
| detailed information | ||
forecast
| Lahti |
Temperature
| Lahti |
Air Temperature in December, °F
The highest day temperature in December 2025 was 40°F. The lowest night temperature was 11°F. The average values for day and night temperatures during December were 31.0°F и 31.7°F respectivly.
Lahti Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Lahti was 34.9°F. The maximum and minimum values were 32.2°F and 38.4°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 Lahti is 1.8 in. It makes december one of the most rainy months of the year.
The average wind speed in December is 7.6 mph. This value is relatively stable throughout the year.
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 Lahti in December is 1.2 hours.
Lahti 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 |  |
8°F | S 11 mph |
| 0900 |  |
8°F | S 12 mph |
| 1200 | |
10°F | S 12 mph |
| 1500 | |
10°F | S 12 mph |
| 1800 |  |
12°F | SW 13 mph |
| 2100 | |
14°F | SW 12 mph |
| 0000 | |
14°F | SW 12 mph |
| 0300 | |
14°F | S 11 mph |