Isola Weather: December
 |
Average Day Temperature: | 47.8°F |
|
Average Night Temperature: | 38.1°F |
|
Sea Water Temperature: | 55.9°F |
|
Number of Sunny Days: | 14 days |
| Sunshine Hours: | 8.7 - 9.0 hours | |
|
Number of Rainy Days: | 4 days |
| Precipitation Totals: | 3.7 in | |
| detailed information | ||
forecast
| Isola |
Temperature
| Isola |
Air Temperature in December, °F
The highest day temperature in December 2025 was 55°F. The lowest night temperature was 25°F. The average values for day and night temperatures during December were 50.9°F и 39.7°F respectivly.
Isola Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Isola was 56.4°F. The maximum and minimum values were 54.0°F and 58.0°F respectively.
Most of the days in December are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in December, in
Precipitation total in December for Isola is 3.7 in. It makes december one of the most rainy months of the year.
The average wind speed in December is 5.1 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 Isola in December is 4.7 hours.
Isola on the Weather Map
| Bled |  |
+22 |
| Bohinjsko Jezero | |
+22 |
| Cerkno |  |
+28 |
| Dolenjske Toplice |  |
+28 |
| Isola |  |
+32 |
| Koper | |
+32 |
| Kranjska Gora | |
+22 |
| Ljubljana |  |
+30 |
| Maribor | |
+26 |
| Moravske Toplice | |
+24 |
| Piran | |
+32 |
| Portoroz | |
+32 |
| Rogaska Slatina | |
+30 |
| Rogla | |
+30 |
| Strunjan | |
+32 |
| 0300 |  |
32°F | W 4 mph |
| 0600 |  |
34°F | SW 7 mph |
| 0900 | |
38°F | W 12 mph |
| 1200 | |
44°F | SW 9 mph |
| 1500 |  |
42°F | SW 8 mph |
| 1800 | |
36°F | SW 6 mph |
| 2100 | |
30°F | W 5 mph |
| 0000 | |
30°F | W 4 mph |