The climate in Dublin during December can be summarized as cool and wet.
December is in the winter in Dublin 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 45.8°F|
|Nightly temperature||2.6°C 36.6°F|
|Average temperature||5.1°C 41.2°F|
|Daily sunshine||1.9 hrs|
|Avg rainfall||120 mm 4.7 ins|
|Rainy days||18 days|
|Sea temperature||10.5°C 50.9°F|
|Windspeed||23kph 14 mph|
On average December is the wettest month of the year in Dublin with around 120mm 4.7 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 1.9 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 Dublin in December 2021.
|Hottest month:||July||18.2°C 64.8°F|
|Driest month:||July||63mm 2.5ins|
|Coldest month:||February||6.6°C 43.9°F|
|Wettest month:||December||120mm 4.7ins|