The climate in Gwynneville during December can be summarized as warm and damp.
December is in the summer in Gwynneville and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (77°F), whilst at night 16°C (60°F) is normal.
|Daytime temperature||25.2°C 77.4°F|
|Nightly temperature||15.6°C 60.1°F|
|Average temperature||20.4°C 68.7°F|
|Daily sunshine||8.1 hrs|
|Avg rainfall||104 mm 4.1 ins|
|Rainy days||11 days|
|Sea temperature||21.4°C 70.5°F|
|Windspeed||16.2kph 10 mph|
On average December is the 4th driest month of the year in Gwynneville with around 104mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.1 hours of sunshine per day.
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 December 2019.
|Hottest month:||February||25.6°C 78.1°F|
|Driest month:||September||63mm 2.5ins|
|Coldest month:||July||16°C 60.8°F|
|Wettest month:||March||190mm 7.5ins|