Brecon Beacons (National Park) in december: average Weather, Temperature and Climate
Weather in Brecon Beacons (National Park) in december 2026
The weather in Brecon Beacons (National Park) in the month of december comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather 146.6cm
Weather at 6am
41°F
Cloudy
29% of time
15%
15%
15%
Weather at 12pm
45°F
Cloudy
39% of time
16%
16%
14%
Weather at 6pm
41°F
Cloudy
27% of time
19%
15%
14%
Weather at 3am
41°F
21%
19%
16%
14%
Evolution of daily average temperature and precipitation in Brecon Beacons (National Park) in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Brecon Beacons (National Park) in december.
The climate of Brecon Beacons (National Park) in december is very bad
The weather in december in Brecon Beacons (National Park) is wet (with 6.1in of precipitation over 10 days). The situation is deteriorating compared to the previous month since in november there is an average of 5.7in of rainfall over 9 days.
The climate is rather more than very fresh in this location the month of december. Bring warm clothes! The thermometer averaged maximum of 45°F. The seasonal minimum is 40°F. Thus, the mean temperature average in december in Brecon Beacons (National Park) is 43°F. Note that these seasonal averages are in contrast with those observed in Brecon Beacons (National Park) in december with a maximum record of 58°F in 2015 and a minimum record of 18°F in 2010. You can expect to have about 5 days with temperatures under 32°F, or 16% of time.
On average, in Brecon Beacons (National Park), the days of december last 07:47. The sun rises at 08:15 and sunset is at 16:02.
Seasonal average climate and temperature of Brecon Beacons (National Park) in december
Check below seasonal norms These datas are set from the weather statements earlier years of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 43°F | ||||
| Highest temperature | 45°F | ||||
| Lowest temperature | 40°F | ||||
| Highest record temperature | 58°F (2015) | ||||
| Lowest record temperature | 18°F (2010) | ||||
| Number of days at -32°F | 5 day(s) (16%) | ||||
| Wind | |||||
| Wind speed | 24km/h | ||||
| Wind temperature | 34°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 6.1in | ||||
| Number of days with rainfall | 10 day(s) (32%) | ||||
| Record daily rainfall | 2.4in (2012) | ||||
| Snowfall | 146.6cm | ||||
| Other climate data | |||||
| Humidity | 95% | ||||
| Visibility | 7.69km | ||||
| Cloud cover | 71% | ||||
| UV index | 2 | ||||
| Daily sunshine hours | 5 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 08:15 | ||||
| Time of sunset | 16:02 | ||||
| Length of day | 07:47 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Brecon Beacons (National Park) in december 2025:
49°F to 50°F
40°F to 45°F
41°F to 45°F
36°F to 43°F
40°F to 49°F
45°F to 47°F
47°F to 54°F
47°F to 49°F
52°F to 54°F
47°F to 49°F
41°F to 49°F
40°F to 47°F
40°F to 45°F
45°F to 49°F
47°F to 49°F
38°F to 47°F
36°F to 49°F
45°F to 49°F
41°F to 45°F
38°F to 43°F
38°F to 43°F
45°F to 47°F
41°F to 45°F
36°F to 40°F
32°F to 36°F
31°F to 38°F
32°F to 41°F
36°F to 40°F
32°F to 40°F
36°F to 38°F
31°F to 38°F
Map: other cities in Wales in december
Cities near Brecon Beacons (National Park):
| Merthyr Tydfil in december | very bad weather |
| Llandrindod Wells in december | very bad weather |
| Swansea in december | bad weather |
| Cardiff in december | bad weather |
| Porthcawl in december | bad weather |
| Barry in december | bad weather |
| Llanelli in december | bad weather |
| Newtown in december | very bad weather |
| Carmarthen in december | bad weather |
| Aberystwyth in december | bad weather |
| Barmouth in december | very bad weather |
| Pembrokeshire in december | bad weather |
Click over cities on the map for information about the weather in december.
Brecon Beacons (National Park)
perfect weather
good
tolerable
bad
very bad
Weather data for Brecon Beacons (National Park) in december:
Weather data for Brecon Beacons (National Park) for december are derived from an average of the weather forecast since 2009 in Brecon Beacons (National Park). There is a margin of error and these forecasts are to be considered as general information only. The weather in Brecon Beacons (National Park) 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 Brecon Beacons (National Park).