Killarney Weather: December
 |
Average Day Temperature: | 46.6°F |
|
Average Night Temperature: | 41.6°F |
|
Sea Water Temperature: | 50.1°F |
|
Number of Sunny Days: | 2 days |
| Sunshine Hours: | 7.7 - 8.1 hours | |
|
Number of Rainy Days: | 9 days |
| Precipitation Totals: | 4.8 in | |
| detailed information | ||
forecast
| Killarney |
Temperature
| Killarney |
Air Temperature in December, °F
The highest day temperature in December 2025 was 54°F. The lowest night temperature was 27°F. The average values for day and night temperatures during December were 44.7°F и 40.2°F respectivly.
Killarney Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Killarney was 50.1°F. The maximum and minimum values were 48.6°F and 51.2°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 Killarney is 4.8 in. It makes december the most rainy month of the year.
The average wind speed in December is 11.1 mph. It makes December one of the most windy months of the year for Killarney.
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 Killarney in December is 2.1 hours.
Killarney on the Weather Map
| 1800 |  |
50°F | NE 21 mph |
| 2100 | |
48°F | NE 21 mph |
| 0000 | |
48°F | NE 16 mph |
| 0300 | |
46°F | NE 10 mph |
| 0600 |  |
42°F | N 6 mph |
| 0900 | |
42°F | N 5 mph |
| 1200 | |
50°F | N 6 mph |
| 1500 |  |
48°F | NE 9 mph |