Dún Laoghaire in december: average Weather, Temperature and Climate
Weather in Dún Laoghaire in december 2026
The weather in Dún Laoghaire in december comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
bad weather 27.9cm
Weather at 6am
45°F
Partly Cloudy
28% of time
27%
19%
15%
Weather at 12pm
47°F
Partly Cloudy
28% of time
25%
22%
17%
Weather at 6pm
45°F
Clear/Sunny
27% of time
27%
20%
17%
Weather at 3am
45°F
29%
28%
16%
14%
Evolution of daily average temperature and precipitation in Dún Laoghaire in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Dún Laoghaire in december.
The climate of Dún Laoghaire in december is bad
The climate in december in Dún Laoghaire is wet (with 4.5in of rainfall over 7 days). The weather is better from the previous month since in november it receives an average of 4.9in of rainfall over 7 days.
The climate is relatively fresh in this location the month of december, but it is bearable by dressing cosy. The high seasonal norm is 49°F. The minimum is 43°F. Thus, the mean temperature average in december in Dún Laoghaire is 47°F. Note that these seasonal averages are in contrast with those observed in Dún Laoghaire in december with a maximum record of 58°F in 2015 and a minimum record of 23°F in 2010.
On average, in Dún Laoghaire, the days of december last 07:33. The sun rises at 08:33 and sunset is at 16:06.
With an unfavorable weather, the month of december is not recommended to go there.
Seasonal average climate and temperature of Dún Laoghaire in december
Check below seasonal norms These statistics are generated from the weather statements of the past years of the month of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 47°F | ||||
| Highest temperature | 49°F | ||||
| Lowest temperature | 43°F | ||||
| Highest record temperature | 58°F (2015) | ||||
| Lowest record temperature | 23°F (2010) | ||||
| Number of days at -32°F | 1 day(s) (3%) | ||||
| Sea temperature | |||||
| Average sea temperature | 53°F | ||||
| Lowest sea temperature | 50°F | ||||
| Highest sea temperature | 56°F | ||||
| Wind | |||||
| Wind speed | 31km/h | ||||
| Wind temperature | 36°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.5in | ||||
| Number of days with rainfall | 7 day(s) (24%) | ||||
| Record daily rainfall | 2.2in (2015) | ||||
| Snowfall | 27.9cm | ||||
| Other climate data | |||||
| Humidity | 88% | ||||
| Visibility | 9.01km | ||||
| Cloud cover | 53% | ||||
| UV index | 3 | ||||
| Daily sunshine hours | 6 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 08:33 | ||||
| Time of sunset | 16:06 | ||||
| Length of day | 07:33 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Dún Laoghaire in december 2025:
47°F to 56°F
45°F to 47°F
45°F to 49°F
41°F to 43°F
40°F to 54°F
49°F to 50°F
49°F to 54°F
49°F to 52°F
54°F to 59°F
49°F to 50°F
50°F to 52°F
45°F to 49°F
45°F to 52°F
52°F to 54°F
45°F to 49°F
41°F to 45°F
47°F to 54°F
45°F to 49°F
45°F to 47°F
47°F to 49°F
47°F to 49°F
49°F to 50°F
49°F to 50°F
45°F to 47°F
43°F to 45°F
41°F to 45°F
43°F to 47°F
43°F to 45°F
43°F to 45°F
43°F to 45°F
36°F to 41°F
Map: other cities in Ireland in december
Cities near Dún Laoghaire:
| Dalkey Island in december | bad weather |
| Dublin in december | bad weather |
| Bray in december | bad weather |
| Malahide in december | bad weather |
| Greystones in december | bad weather |
| Wicklow Mountains National Park in december | very bad weather |
| Skerries in december | bad weather |
| Balbriggan in december | bad weather |
| Wicklow in december | bad weather |
| Naas in december | very bad weather |
| Laytown in december | very bad weather |
| Droichead Nua in december | very bad weather |
Click over cities on the map for information about the weather in december.
Dún Laoghaire
perfect weather
good
tolerable
bad
very bad
Weather data for Dún Laoghaire in december:
Weather data for Dún Laoghaire for december are derived from an average of the weather forecast since 2009 in Dún Laoghaire. There is a margin of error and these forecasts are to be considered as general information only. The weather in Dún Laoghaire can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Dún Laoghaire.