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Weather in City and County of Swansea for December 2026

Your guide to City and County of Swansea weather in December - trends and predictions

    Temperatures

  • In general, the average temperature in City and County of Swansea at the beginning of December is 9.8 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 8.8 °C by the end of December.

    • Rain 🌧️

  • City and County of Swansea in December brings notable rainfall, with an average of 20 rainy days and a total precipitation of 198.4 mm.

    • More

  • Is December a good time to visit City and County of Swansea? check out the best time to travel to City and County of Swansea page.

  • ✨ Is December a good time to visit City and County of Swansea? – Ask the AI Weatherman

Average dry days
11
Dry days
Average rainy days
20
Rainy days
Average snowy days
0
Snow days
Average temperatures
10°/7°
Temperatures
Average wind speed
37 km/h
Avg max wind
Average humidity
84 %
Avg humidity

City and County of Swansea Weather December

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

Temperatures trend during December in City and County of Swansea

See the weather trend as well as the moving average line

December weather in City and County of Swansea day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Light rain
Light rain
 9° /7° 9 mm 0.6
2 Dec. Light rain
Light rain
 8° /5° 4 mm 0.6
3 Dec. Light rain
Light rain
 8° /6° 9.4 mm 0.6
4 Dec. Light rain
Light rain
 10° /6° 6.9 mm 0.5
5 Dec. Moderate rain
Moderate rain
 11° /7° 11.2 mm 0.5
6 Dec. Light rain
Light rain
 11° /7° 6.6 mm 0.5
7 Dec. Moderate rain
Moderate rain
 12° /8° 17.9 mm 0.5
8 Dec. Light rain
Light rain
 10° /8° 4.2 mm 0.5
9 Dec. Moderate rain
Moderate rain
 11° /8° 10 mm 0.5
10 Dec. Light rain
Light rain
 9° /7° 4.5 mm 0.5
11 Dec. Patchy rain possible
Patchy rain possible
 9° /7° 0.8 mm 0.5
12 Dec. Light rain
Light rain
 9° /6° 6.7 mm 0.5
13 Dec. Patchy rain possible
Patchy rain possible
 8° /7° 1.6 mm 0.5
14 Dec. Light drizzle
Light drizzle
 10° /7° 0.8 mm 0.5
15 Dec. Moderate rain
Moderate rain
 10° /8° 11.8 mm 0.5
16 Dec. Patchy rain possible
Patchy rain possible
 10° /8° 0.9 mm 0.5
17 Dec. Light rain
Light rain
 11° /8° 8.5 mm 0.5
18 Dec. Moderate rain
Moderate rain
 11° /8° 17.8 mm 0.5
19 Dec. Light rain
Light rain
 9° /7° 7.1 mm 0.5
20 Dec. Light rain
Light rain
 10° /7° 4 mm 0.5
21 Dec. Patchy rain possible
Patchy rain possible
 10° /8° 2.4 mm 0.5
22 Dec. Patchy rain possible
Patchy rain possible
 10° /8° 2.2 mm 0.5
23 Dec. Light rain
Light rain
 10° /7° 5.7 mm 0.5
24 Dec. Light rain
Light rain
 10° /8° 3.9 mm 0.5
25 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /7° 6 mm 0.5
26 Dec. Patchy rain possible
Patchy rain possible
 8° /6° 2.4 mm 0.5
27 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /7° 6.4 mm 0.5
28 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /7° 5.6 mm 0.5
29 Dec. Light rain
Light rain
 8° /6° 3.6 mm 0.5
30 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /6° 6.4 mm 0.5
31 Dec. Heavy rain at times
Heavy rain at times
 8° /6° 10 mm 0.5
Next
Important Notice
Our weather forecast for City and County of Swansea 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 City and County of Swansea forecast closer to your planned date for the most up-to-date weather information.
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City and County of Swansea in December - FAQ

What are the expected maximum and minimum temperatures in City and County of Swansea during December?
During December, expect a variety of temperatures with highs around 10° and lows near 7°, suitable for diverse activities and preferences.

How much rainfall should be expected in City and County of Swansea during December?
Significant rainfall exceeding 198.4 mm is expected in City and County of Swansea during December, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in City and County of Swansea during December?
The average wind speed in City and County of Swansea during December is 37 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in City and County of Swansea

Explore the daily rainfall trends and prepare for City and County of Swanseas December weather 💧
Typically, City and County of Swansea has 20 rainy days in December with a total of 198.4 mm of rainfall.
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