Porthmadog Weather in December
What's the weather like in Porthmadog (Wales) in December 2024?
The climate in Porthmadog during December can be summarized as cool and very wet.
December is in the winter in Porthmadog and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 8°C (46°F), whilst at night 3°C (37°F) is normal.
| Daytime temperature | 7.7°C 45.9°F |
|---|---|
| Nightly temperature | 2.5°C 36.5°F |
| Average temperature | 5.1°C 41.2°F |
| Daily sunshine | 1.3 hrs |
| Avg rainfall | 202 mm 8 ins |
| Rainy days | 21 days |
| Sea temperature | 10.5°C 50.9°F |
| Humidity | 90% |
| Windspeed | 23kph 14 mph |
On average December is the wettest month of the year in Porthmadog with around 202mm 8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 1.3 hours of sunshine per day.
December temperatures in Porthmadog
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Porthmadog in December 2024.
Other monthly averages
Best places to visit in December
Porthmadog weather stats
| Hottest month: | July | 18°C 64.4°F |
|---|---|---|
| Driest month: | May | 96mm 3.8ins |
| Sunniest month: | May | 6.7hrs |
| Coldest month: | February | 6.5°C 43.7°F |
| Wettest month: | December | 202mm 8ins |
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