Dublin Weather in January
Ireland · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
January in Dublin sees average temperatures ranging from a low of 3.8°C (38.8°F) to a high of 8.4°C (47.1°F), with a mean of 6.1°C (43.0°F). Compared to the annual average of 11.0°C (51.8°F), this month is 4.9°C cooler than the yearly norm. This is the coldest month of the year, with average lows of 3.8°C (38.8°F). Precipitation averages 61.6mm, making it approximately 17.0mm drier than the monthly average of 79.0mm. The city receives an average of 4.1 hours of sunshine per day during January, with relative humidity averaging 82.8%. Wind speeds reach an average maximum of 27.0 km/h. Snowfall averages 0.4cm during January, which can affect travel plans and outdoor activities. For travelers, this month offers a coldest month of the year experience in Dublin, with drier-than-average conditions compared to the rest of the year.
Dublin's weather is a choose-your-own-adventure where every chapter includes rain. I packed a 'waterproof' jacket once — it wasn't. Bring serious rain gear: Gore-Tex or equivalent, year-round. The good news: rain rarely lasts long. My favorite window is May-June: 15°C, 7 hours of sun, and the pubs still have that winter coziness. August can be oddly humid. Skip January — 5°C, 70mm of rain, 8 hours of daylight if you're lucky. October has a melancholic charm but bring layers. Always pack for four seasons in one day, genuinely.
January vs Adjacent Months
| Metric | December | January | February |
|---|---|---|---|
| Mean Temp | 7.1°C (44.8°F) | 6.1°C (43.0°F) | 7.4°C (45.3°F) |
| Rainfall | 87.8mm | 61.6mm | 79.3mm |
| Sunshine | 3.5 hrs | 4.1 hrs | 5.0 hrs |
| Humidity | 83.7% | 82.8% | 78.9% |
| Wind | 28.2 km/h | 27.0 km/h | 31.4 km/h |
| Rainy Days | 18.8 | 17.2 | 17.8 |
| Snowfall | 0.7 cm | 0.4 cm | 1.1 cm |
Seasonal Context
January falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Dublin in January, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Dublin in January?
The average temperature in Dublin during January ranges from 3.8°C (38.8°F) to 8.4°C (47.1°F), with a mean of 6.1°C (43.0°F).
How much does it rain in Dublin in January?
Dublin receives an average of 61.6mm of precipitation in January, spread across approximately 17.2 rainy days.
What should I pack for Dublin in January?
Based on January weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is January a good time to visit Dublin?
January is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Dublin
Cities with Similar January Climate (Oceanic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 53.35°, -6.26°. Timezone: Europe/Dublin. Last updated: 2026-07-30.