Weather in Dublin in January 2025
- January is usually the coldest month of the year in Dublin;
Average weather
Average temperature in Dublin in January
The temperature in January is +9°C on average, with a range between a maximum of +14°C during the day and a minimum of -3°C at night.
The average maximum temperature goes up 12% by the end of the month, compared with the beginning of the month, from +7°C to +9°C.
Is Dublin warm or cold in January?
Dublin is typically cool in January.
Maximum temperatures go down compared to the previous month from +9°C to +8°C. The minimum temperature also goes down from +5°C to +4°C.
Pack a sweater and a jacket as there will be cooler temperatures.
January is the coldest month in Dublin, here is the comparison with other months:
Water temperature in Dublin in January
Water in Dublin in January is Cold. It varies from +8°C to +11°C, with an average of +10°C. Note that the air temperature is lower than the water temperature, averaging around +8°C.
In January, water temperatures are average relative to the rest of the year:
Can you swim in Dublin in January?
Climate in Dublin in January
| December | January | February | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +9°C | +8°C | +9°C | ||||
| Min. temperature | ||||||
| -9°C | -7°C | -4°C | ||||
| Max. temperature | ||||||
| +15°C | +15°C | +16°C | ||||
| Rainfall | ||||||
| 136 mm | 135 mm | 145 mm | ||||
| Wind | ||||||
| 6 m/s | 6 m/s | 6 m/s | ||||
| Avg. water temperature | ||||||
| +11°C | +10°C | +9°C | ||||
| Humidity | ||||||
| 85% | 84% | 82% | ||||
| Air pressure | ||||||
| 1010 HPa | 1011 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 1 | 1 | 1 | ||||
| Cloudy days | ||||||
| 11 | 11 | 10 | ||||
| Rainy days | ||||||
| 18 | 18 | 16 | ||||
| Snowy days | ||||||
| 0 | 1 | 1 | ||||
January weather is still as ok as in December. It’s getting colder in January. From +9°C in the day, the average maximum temperature lowers to +8°C. As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 136 mm to 135 mm. It feels drier, as humidity decreases from 85% to 84%. The average wind speed doesn’t change much during January, staying around 6 m/s. The amount of sunny days stay about the same, averaging 1 sunny days during the month.
February brings much the same weather, it remains ok.
Wind
The average wind speed is 7 m/s getting up to 12 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Dublin is gradually increasing during January, going from 4 m/s to 9 m/s over the course of the month.
Rain
Snow
January is one of the snowiest months in Dublin.
Here’s how January is compared with other months in the amount of snow, total mm:
How was the weather last January in Dublin?
Climate Change over Years
The climate in Dublin in January has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+12°C) and the highest in 2023 (+15°C). The driest year was 1991 with only 627 mm of rainfall, and the wettest year was 2013 with 15853 mm.
FAQ
Is January a good time to visit Dublin?
Can you sunbathe in Dublin in January?
Can you swim in Dublin in January?
Is Dublin rainy in January?
Is it sunny in Dublin in January?
Other cities in Ireland
Monthly weather in Dublin
Source of the data
For this page, we’ve looked at the typical weather in Dublin, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.