Dublin Weather in December
In December, Dublin averages a high of 8°C (47°F) and a low of 3°C (37°F), based on 55 years of historical weather data from DUBLIN PHOENIX PARK.
8°C
Average high
47°F
3°C
Average low
37°F
17°C
Record high
63°F · 2025
-12°C
Record low
10°F · 2010
What to Expect in Dublin in December
Typical December days in Dublin reach 8°C (47°F) during the afternoon and cool to around 3°C (37°F) overnight. On average, measurable rain falls on about 69% of days this month. Over the past 55 years, December temperatures in Dublin have ranged from a record high of 17°C (2025) down to a record low of -12°C (2010).
For a day-by-day look or other months, see the full Dublin weather history.