Dublin weather in December
December in Dublin: cold, rainy, with clean air — a fair time to visit.
#12 of 12 months in Dublin · #433 of 604 destinations to visit in December · comfort 56/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Dublin climate normals — December
| Daytime high | 8°C / 47°F | 🧥 cold |
|---|---|---|
| Nighttime low | 5°C / 41°F | |
| Feels like (high) | 5°C / 41°F | |
| Rainfall | 86 mm / 3.4 in | 🌧 rainy |
| Rainy days | 14 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 4°C / 40°F | |
| Sunshine | 3.4 h/day | |
| Daylight | 7.6 h | |
| Wind | 25 km/h / 16 mph | |
| Snowfall | 0.4 cm / 0.2 in | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Dublin in December — FAQ
- Is December a good time to visit Dublin?
- December in Dublin: cold, rainy, with clean air — a fair time to visit. It ranks #12 of 12 months for Dublin on SeasonMap's comfort score (56/100).
- What is the weather like in Dublin in December?
- In December, Dublin averages a daily high of 8.4°C and a low of 5°C, with about 85.6 mm of rain over roughly 14.4 rainy days.
- What is the air quality in Dublin in December?
- Dublin has a mean US Air Quality Index of about 32 in December.