Dublin Weather in December
In December, Dublin averages a high of 9°C (48°F) and a low of 3°C (37°F), from 50 years of daily records (1971–2026).
9°C
Average high
48°F
3°C
Average low
37°F
17°C
Record high
63°F · December 9, 2025
-12°C
Record low
10°F · December 26, 2010
What December Is Like in Dublin
- Dublin's hottest December day on record is a recent one: 17°C (63°F) on December 9, 2025.
- 7 of the 10 warmest Decembers on record in Dublin have come since 2011.
- December is the wettest month of the year in Dublin, averaging 79 mm of rain.
- December in Dublin has become 1.0°C (1.9°F) warmer on average: the 2011–2025 average against 1970–1989.
At least 1 mm of rain falls on 43% of December days, and the month averages 79 mm in total.
Warmest: 2015 (11.7°C)Latest: 2025 (10.2°C)10-year averageLong-run average (8.8°C)
Look Up a Day in December
See the weather in Dublin on any December date, year by year.
Source: NOAA GHCN-Daily, Dublin Phoenix Park (1971–2026). Averages cover 1971–2026. How we compute this