Dublin Weather in January
In January, Dublin averages a high of 8°C (46°F) and a low of 2°C (36°F), based on 56 years of historical weather data from DUBLIN PHOENIX PARK.
8°C
Average high
46°F
2°C
Average low
36°F
24°C
Record high
75°F · 2026
-13°C
Record low
8°F · 1982
What to Expect in Dublin in January
Typical January days in Dublin reach 8°C (46°F) during the afternoon and cool to around 2°C (36°F) overnight. On average, measurable rain falls on about 70% of days this month. Over the past 56 years, January temperatures in Dublin have ranged from a record high of 24°C (2026) down to a record low of -13°C (1982).
For a day-by-day look or other months, see the full Dublin weather history.