Gwynedd (Barmouth)
December
Weather in Gwynedd for December 2026
Your guide to Gwynedd weather in December - trends and predictions
Snowfall in Gwynedd during December is quite rare, with fewer than 2 snowy days on average.
In general, the average temperature in Gwynedd at the beginning of December is 8.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 6 °C by the end of December.
Gwynedd experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 268.4 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
Rain 🌧️
More
7
Dry days
23
Rainy days
1
Snow days
7°/4°
Temperatures
24 km/h
Avg max wind
88 %
Avg humidity
Gwynedd Weather December
Move between months or click on a day
Temperatures trend during December in Gwynedd
See the weather trend as well as the moving average line
December weather in Gwynedd day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Moderate or heavy rain shower | 11° /6° | 44.4 mm | 0 cm | |
| 2 Dec. | Moderate rain at times | 7° /3° | 12.8 mm | 0 cm | |
| 3 Dec. |  Overcast | 6° /1° | 3.2 mm | 0 cm | |
| 4 Dec. | Moderate or heavy rain shower | 7° /2° | 8.7 mm | 0 cm | |
| 5 Dec. | Moderate or heavy rain shower | 9° /3° | 31.8 mm | 1.1 cm | |
| 6 Dec. | Moderate or heavy rain shower | 9° /5° | 13.5 mm | 0 cm | |
| 7 Dec. | Moderate or heavy rain shower | 10° /5° | 17.6 mm | 0 cm | |
| 8 Dec. |  Patchy rain possible | 7° /5° | 6.1 mm | 0 cm | |
| 9 Dec. | Overcast | 9° /5° | 15.4 mm | 0 cm | |
| 10 Dec. | Overcast | 6° /3° | 2.3 mm | 0 cm | |
| 11 Dec. |  Sunny | 7° /3° | 0 mm | 0 cm | |
| 12 Dec. | Overcast | 7° /2° | 4.9 mm | 0 cm | |
| 13 Dec. | Patchy rain possible | 6° /4° | 0.4 mm | 0 cm | |
| 14 Dec. | Patchy rain possible | 8° /5° | 5.8 mm | 0 cm | |
| 15 Dec. | Patchy rain possible | 9° /6° | 16.2 mm | 0 cm | |
| 16 Dec. | Moderate rain at times | 7° /4° | 4.9 mm | 0 cm | |
| 17 Dec. | Patchy rain possible | 10° /3° | 10.5 mm | 0 cm | |
| 18 Dec. | Moderate or heavy rain shower | 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 or heavy rain shower | 8° /4° | 13.7 mm | 0 cm | |
| 22 Dec. | Moderate or heavy rain shower | 6° /3° | 6.2 mm | 0 cm | |
| 23 Dec. |  Heavy rain at times | 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° /2° | 0.1 mm | 0 cm | |
| 29 Dec. | Patchy rain possible | 6° /3° | 1.1 mm | 0 cm | |
| 30 Dec. | Patchy rain possible | 5° /2° | 1.9 mm | 0 cm | |
| 31 Dec. |  Moderate rain | 6° /3° | 7 mm | 0 cm | |
| Next | |||||
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.
Change Month
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 23 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Gwynedd in December 2026?
Gwynedd typically sees 1.085 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 ❄️
On average, Gwynedd sees 1 snowy days during December, with approximately 1.1 cm of total snowfall.
December rainfall patterns in Gwynedd
Explore the daily rainfall trends and prepare for Gwynedds December weather 💧
Typically, Gwynedd has 23 rainy days in December with a total of 268.4 mm of rainfall.
Top locations in Gwynedd
Select a location for an accurate weather forecast
More Locations Quick links
More Gwynedd weather pages
You are here
Where is Gwynedd?Get accurate weather forecasts for Gwynedd, located at latitude 52.724 and longitude -4.057. Stay updated with localized weather information tailored for Gwynedd.
Found a mistake?
We appreciate your attention to details. Tell us here.