Gwynedd (Barmouth)
December
Weather in Gwynedd for December 2026
Your guide to Gwynedd weather in December - trends and predictions
Gwynedd experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 268.4 mm.
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Rain 🌧️
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10
Dry days
21
Rainy days
0
Snow days
7°/4°
Temperatures
24 km/h
Avg max wind
89 %
Avg humidity
Gwynedd Weather December
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Temperatures trend during December in Gwynedd
See the weather trend as well as the moving average line
December weather in Gwynedd day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Heavy rain | 11° /7° | 44.4 mm | 0 cm | |
| 2 Dec. |  Moderate rain | 7° /3° | 12.8 mm | 0 cm | |
| 3 Dec. |  Light rain | 6° /2° | 3.2 mm | 0 cm | |
| 4 Dec. |  Moderate or heavy rain shower | 7° /3° | 8.7 mm | 0 cm | |
| 5 Dec. | Heavy rain | 9° /4° | 31.8 mm | 1.1 cm | |
| 6 Dec. | Moderate rain | 9° /5° | 13.5 mm | 0 cm | |
| 7 Dec. | Moderate rain | 10° /5° | 17.6 mm | 0 cm | |
| 8 Dec. | Light rain | 7° /5° | 6.1 mm | 0 cm | |
| 9 Dec. | Moderate rain | 9° /5° | 15.4 mm | 0 cm | |
| 10 Dec. |  Patchy rain possible | 6° /4° | 2.3 mm | 0 cm | |
| 11 Dec. |  Sunny | 7° /3° | 0 mm | 0 cm | |
| 12 Dec. | Light rain | 7° /2° | 4.9 mm | 0 cm | |
| 13 Dec. | Patchy rain possible | 6° /4° | 0.4 mm | 0 cm | |
| 14 Dec. | Light rain | 8° /5° | 5.8 mm | 0 cm | |
| 15 Dec. | Moderate rain | 9° /6° | 16.2 mm | 0 cm | |
| 16 Dec. | Light rain | 7° /5° | 4.9 mm | 0 cm | |
| 17 Dec. | Moderate rain | 10° /4° | 10.5 mm | 0 cm | |
| 18 Dec. | Moderate rain | 10° /5° | 19.4 mm | 0 cm | |
| 19 Dec. | Moderate or heavy rain shower | 5° /4° | 8.8 mm | 0 cm | |
| 20 Dec. | Moderate or heavy rain shower | 7° /3° | 7.1 mm | 0 cm | |
| 21 Dec. | Moderate rain | 8° /4° | 13.7 mm | 0 cm | |
| 22 Dec. | Moderate or heavy rain shower | 6° /3° | 6.2 mm | 0 cm | |
| 23 Dec. | Light rain | 8° /3° | 3.6 mm | 0 cm | |
| 24 Dec. | Patchy rain possible | 7° /4° | 0.9 mm | 0 cm | |
| 25 Dec. | Patchy rain possible | 6° /4° | 0.1 mm | 0 cm | |
| 26 Dec. |  Overcast | 6° /3° | 0.1 mm | 0 cm | |
| 27 Dec. | Overcast | 7° /3° | 0 mm | 0 cm | |
| 28 Dec. | Overcast | 6° /3° | 0.1 mm | 0 cm | |
| 29 Dec. | Patchy rain possible | 6° /3° | 1.1 mm | 0 cm | |
| 30 Dec. | Patchy rain possible | 5° /3° | 1.9 mm | 0 cm | |
| 31 Dec. | Moderate rain | 6° /4° | 7 mm | 0 cm | |
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Important Notice
Our weather forecast for Gwynedd 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 Gwynedd forecast closer to your planned date for the most up-to-date weather information.
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Gwynedd in December - FAQ
What are the expected maximum and minimum temperatures in Gwynedd during December?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 4°.
How much rainfall should be expected in Gwynedd during December?
Significant rainfall exceeding 268.4 mm is expected in Gwynedd during December, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Gwynedd in December 2026?
Gwynedd typically sees 1.1 cm of snowfall during December.
What are the typical wind conditions in Gwynedd during December?
The average wind speed in Gwynedd during December is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
Gwynedd snow forecast December 2026
Track daily snowfall levels and discover Gwynedd’s snowy potential this December ❄️
December rainfall patterns in Gwynedd
Explore the daily rainfall trends and prepare for Gwynedds December weather 💧
Typically, Gwynedd has 21 rainy days in December with a total of 268.4 mm of rainfall.
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