Monthly climate guide
Dublin weather in December
With highs near 9°C (47°F) and lows around 5°C (41°F), December feels cool in Dublin. Rainfall averages about 111 mm (wet) and the sky is often cloudy. Daytime highs are about the same as November and about the same as January.
What stands out in December
- Days and nights are close, only about 3°C apart.
- December is among Dublin's three coolest months.
- Keep a flexible plan: if showers roll in, shift Kilmainham Gaol to a drier part of the day.
- Seasonally, December counts as early winter in Dublin.
It's usually the wettest month of the year.
Avg high
9°C
47°F
Avg low
5°C
41°F
Rainfall
111 mm
wet
Humidity
92%
relative
Sky
78%
cloud · often cloudy
Dublin weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 8°C / 46°F | 4°C / 39°F | 86 mm | 91% | 80% |
| February | 8°C / 46°F | 4°C / 39°F | 82 mm | 90% | 78% |
| March | 9°C / 48°F | 4°C / 39°F | 73 mm | 88% | 75% |
| April | 11°C / 52°F | 6°C / 42°F | 58 mm | 86% | 73% |
| May | 14°C / 56°F | 8°C / 46°F | 61 mm | 84% | 73% |
| June | 16°C / 61°F | 11°C / 51°F | 82 mm | 84% | 76% |
| July | 18°C / 64°F | 12°C / 54°F | 71 mm | 85% | 75% |
| August | 18°C / 64°F | 12°C / 54°F | 96 mm | 86% | 78% |
| September | 16°C / 61°F | 11°C / 51°F | 82 mm | 87% | 76% |
| October | 13°C / 56°F | 9°C / 48°F | 97 mm | 88% | 74% |
| November | 10°C / 50°F | 7°C / 44°F | 107 mm | 90% | 72% |
| December | 9°C / 47°F | 5°C / 41°F | 111 mm | 92% | 78% |
What to pack for December
- A proper insulated winter coat
- A hat, scarf and gloves
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is December a good time to visit Dublin?
Our Dublin guide recommends: May to September for the mildest, driest weather — though Dublin's weather is changeable year-round.
Book Book of Kells and Guinness Storehouse tickets online ahead of time — both are popular enough to have queues without a timed slot.
Best time to visit Dublin →Other Ireland cities in December
Cite or embed this data
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Dublin weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/ireland/dublin/december
<a href="https://weathercompare.eu/weather/ireland/dublin/december">Dublin weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/ireland/dublin" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Dublin weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/ireland/dublin/december">Dublin weather in December</a> – WeatherCompare</p>
Dublin in December: quick answers
Is December a good time to visit Dublin?
December is cool in Dublin, with highs around 9°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Dublin in December?
Average highs are about 9°C (47°F) and average lows about 5°C (41°F), based on 10 years of daily data.
Does it rain a lot in Dublin in December?
Dublin typically gets around 111 mm of rain in December — wet. It's usually the wettest month of the year.
When is the best time to visit Dublin?
May to September for the mildest, driest weather — though Dublin's weather is changeable year-round.
Figures are long-term averages for the area around Dublin (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.