Verdict: Fair month
Dublin Weather in December
December is properly cold in Dublin, with highs of only 9°C (48°F). It's also the wet side of the calendar: rain falls on about 15 days, so build flexibility into plans. December is workable in Dublin if your dates are fixed — just plan around the conditions.
Average high
9°C / 48°F
Average low
5°C / 41°F
Rain days
~15
Precipitation
88 mm
What to pack for Dublin in December
- A proper warm jacket, and a hat for mornings
- Rain gear is non-negotiable — expect rain on roughly 15 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Dublin: Jul (19°C / 66°F) · Coolest: Jan (8°C / 46°F) · Wettest: Oct (~18 rain days)
8°
4°
Jan
10°
5°
Feb
10°
5°
Mar
12°
6°
Apr
15°
9°
May
18°
12°
Jun
19°
13°
Jul
19°
13°
Aug
17°
12°
Sep
15°
10°
Oct
11°
7°
Nov
9°
5°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)