Dublin Weather in January
In January, Dublin averages a high of 8°C (47°F) and a low of 2°C (35°F), from 54 years of daily records (1971–2026).
8°C
Average high
47°F
2°C
Average low
35°F
17°C
Record high
63°F · January 10, 1971
-13°C
Record low
8°F · January 15, 1982
What January Is Like in Dublin
- The January heat record, 17°C (63°F) on January 10, 1971, has stood for 55 years.
- The coldest January reading, -13°C (8°F) on January 15, 1982, has not been matched in 44 years.
- January is Dublin's coldest month of the year.
- January in Dublin has become 0.9°C (1.7°F) warmer on average: the 2012–2026 average against 1970–1989.
At least 1 mm of rain falls on 43% of January days, and the month averages 67 mm in total.
Warmest: 1989 (10.6°C)Latest: 2026 (7.7°C)10-year averageLong-run average (8.0°C)
Look Up a Day in January
See the weather in Dublin on any January date, year by year.
Source: NOAA GHCN-Daily, Dublin Phoenix Park (1971–2026). Averages cover 1971–2026. How we compute this