Dublin weather in January
January in Dublin: cold, a little rain, with clean air — a fair time to visit.
#11 of 12 months in Dublin · #415 of 604 destinations to visit in January · comfort 59/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Dublin climate normals — January
| Daytime high | 8°C / 46°F | 🧥 cold |
|---|---|---|
| Nighttime low | 4°C / 40°F | |
| Feels like (high) | 4°C / 39°F | |
| Rainfall | 55 mm / 2.1 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 4°C / 39°F | |
| Sunshine | 4 h/day | |
| Daylight | 8.2 h | |
| Wind | 23 km/h / 14 mph | |
| Snowfall | 1.7 cm / 0.7 in | |
| Air quality (US AQI) | 30 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Dublin in January — FAQ
- Is January a good time to visit Dublin?
- January in Dublin: cold, a little rain, with clean air — a fair time to visit. It ranks #11 of 12 months for Dublin on SeasonMap's comfort score (59/100).
- What is the weather like in Dublin in January?
- In January, Dublin averages a daily high of 7.9°C and a low of 4.2°C, with about 54.5 mm of rain over roughly 10.6 rainy days.
- What is the air quality in Dublin in January?
- Dublin has a mean US Air Quality Index of about 30 in January.
- Does it snow in Dublin in January?
- Dublin sees roughly 1.7 cm of snowfall in January.