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United Kingdom weather

Weather in Wales for December 2026

Your guide to Wales weather in December - trends and predictions

    Temperatures

  • In general, the average temperature in Wales at the beginning of December is 9.5 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 8.7 °C by the end of December.

    • Rain 🌧️

  • Wales in December brings notable rainfall, with an average of 18 rainy days and a total precipitation of 163.8 mm.

    • More

  • Is December a good time to visit Wales? check out the best time to travel to Wales page.

  • ✨ Is December a good time to visit Wales? – Ask the AI Weatherman

Average dry days
13
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
9°/6°
Temperatures
Average wind speed
33 km/h
Avg max wind
Average humidity
86 %
Avg humidity

Wales Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light rain
10°
2
Patchy rain possible
7°
3
Light rain
8°
4
Light rain
10°
5
Moderate rain
10°
6
Light rain
10°
7
Moderate rain
12°
8
Light rain shower
9°
9
Moderate rain
11°
10
Light rain
9°
11
Patchy rain possible
9°
12
Light rain
9°
13
Patchy rain possible
8°
14
Patchy rain possible
9°
15
Moderate rain
10°
16
Patchy rain possible
10°
17
Light rain
10°
18
Moderate rain
12°
19
Light rain
9°
20
Light rain
9°
21
Light rain
10°
22
Patchy rain possible
10°
23
Light rain
10°
24
Patchy rain possible
10°
25
Patchy rain possible
9°
26
Light rain
7°
27
Light rain
10°
28
Light rain
9°
29
Light rain
8°
30
Light rain
10°
31
Heavy rain at times
9°

What’s the Weather Like in Wales This December?

Discover the average temperatures and weather trends across Wales’s cities this December.
Patchy rain possibleCardiff9 °C / 6 °CPatchy rain possibleSwansea10 °C / 7 °CPatchy rain possibleWrexham8 °C / 4 °CPatchy rain possibleNewport9 °C / 6 °CPatchy light drizzleBuckley8 °C / 5 °CPatchy rain possibleLlandudno9 °C / 5 °CPatchy rain possibleBarmouth7 °C / 4 °CPatchy rain possibleTenby10 °C / 7 °CPatchy rain possibleAnglesey9 °C / 6 °CPatchy rain possibleConwy9 °C / 5 °CPatchy rain possibleRhondda7 °C / 4 °CPatchy rain possiblePrestatyn9 °C / 6 °CMore Locations

Temperatures trend during December in Wales

See the weather trend as well as the moving average line

December weather in Wales day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Light rain
Light rain
 10° /6° 9.9 mm 0.6
2 Dec. Patchy rain possible
Patchy rain possible
 7° /4° 1.8 mm 0.6
3 Dec. Light rain
Light rain
 8° /5° 7.5 mm 0.6
4 Dec. Light rain
Light rain
 10° /4° 5.9 mm 0.6
5 Dec. Moderate rain
Moderate rain
 10° /6° 11.3 mm 0.5
6 Dec. Light rain
Light rain
 10° /6° 6.1 mm 0.5
7 Dec. Moderate rain
Moderate rain
 12° /7° 11 mm 0.5
8 Dec. Light rain shower
Light rain shower
 9° /8° 1.7 mm 0.5
9 Dec. Moderate rain
Moderate rain
 11° /8° 8.4 mm 0.5
10 Dec. Light rain
Light rain
 9° /7° 3.9 mm 0.5
11 Dec. Patchy rain possible
Patchy rain possible
 9° /6° 0.5 mm 0.5
12 Dec. Light rain
Light rain
 9° /5° 3.7 mm 0.5
13 Dec. Patchy rain possible
Patchy rain possible
 8° /5° 1.6 mm 0.5
14 Dec. Patchy rain possible
Patchy rain possible
 9° /4° 0.1 mm 0.5
15 Dec. Moderate rain
Moderate rain
 10° /7° 16.6 mm 0.5
16 Dec. Patchy rain possible
Patchy rain possible
 10° /6° 1.2 mm 0.5
17 Dec. Light rain
Light rain
 10° /6° 8.8 mm 0.5
18 Dec. Moderate rain
Moderate rain
 12° /7° 15.6 mm 0.5
19 Dec. Light rain
Light rain
 9° /5° 2.9 mm 0.5
20 Dec. Light rain
Light rain
 9° /5° 5.1 mm 0.5
21 Dec. Light rain
Light rain
 10° /7° 3.7 mm 0.5
22 Dec. Patchy rain possible
Patchy rain possible
 10° /7° 2 mm 0.5
23 Dec. Light rain
Light rain
 10° /6° 3.8 mm 0.5
24 Dec. Patchy rain possible
Patchy rain possible
 10° /7° 2.3 mm 0.5
25 Dec. Patchy rain possible
Patchy rain possible
 9° /6° 2.3 mm 0.5
26 Dec. Light rain
Light rain
 7° /4° 2.7 mm 0.5
27 Dec. Light rain
Light rain
 10° /6° 4.8 mm 0.5
28 Dec. Light rain
Light rain
 9° /6° 4.1 mm 0.5
29 Dec. Light rain
Light rain
 8° /5° 3.1 mm 0.5
30 Dec. Light rain
Light rain
 10° /5° 4.5 mm 0.5
31 Dec. Heavy rain at times
Heavy rain at times
 9° /6° 6.8 mm 0.5
Next
Important Notice
Our weather forecast for Wales in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Wales forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Wales in December - FAQ

What are the expected maximum and minimum temperatures in Wales during December?
During December, expect a variety of temperatures with highs around 9° and lows near 6°, suitable for diverse activities and preferences.

How much rainfall should be expected in Wales during December?
Significant rainfall exceeding 163.8 mm is expected in Wales during December, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Wales in December 2026?
Wales typically sees 0 cm of snowfall during December.

What are the typical wind conditions in Wales during December?
The average wind speed in Wales during December is 33 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Wales

Explore the daily rainfall trends and prepare for Waless December weather 💧
Typically, Wales has 18 rainy days in December with a total of 163.8 mm of rainfall.
Counties in Wales
Select a county for an accurate weather forecast
AngleseyCaerphilly County BoroughCardiffCity and County of SwanseaConwyCounty of CeredigionCounty of FlintshireDenbighshireGwyneddNewportPembrokeshireRhondda Cynon TafWrexham
Top locations in Wales
Select a location for an accurate weather forecast
AngleseyBarmouthBuckleyCardiffConwyLlandudnoNewportSwanseaTenbyWrexham
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