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December Weather in Dublin, United States

Last updated: June 24, 2025

In Dublin, United States, the average temperature in December hovers around 2°C (36°F). While temperatures can dip as low as -19°C (-2°F), they can also rise to a pleasant 18°C (65°F). Expect 90 mm (3.5 in) of precipitation spread over 11 days, along with an average humidity level of 87%.

December Temperature in Dublin

In December in Dublin, the average temperature is 2°C (36°F), with maximums reaching 18°C (65°F) and minimums plummeting to -19°C (-2°F). This varied climate makes it essential for travelers to prepare for both warm and chilly conditions.

December Weather in Dublin: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Dublin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dublin, December typically has an average temperature of 2°C (36°F), with highs reaching up to 18°C (65°F) and lows dropping to around -19°C (-2°F).
JanFebMarAprMayJunJulAugSepOctNovDec303442526472767369574136
Data source: Temperature data for Dublin generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Dublin

In Dublin in December, the total precipitation amounts to 90 mm (3.5 in) over the course of 11 days.

December Precipitation Trends in Dublin

The chart displays monthly precipitation patterns in Dublin, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Dublin, December typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7910013310413611811588901009790
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Dublin

In Dublin in December, humidity is 87%. With an average temperature of 2°C (36°F), this humidity feels like an unwelcome chill that seeps into your bones, making outdoor exploration feel damp and heavy, and encouraging travelers to seek the warmth of indoor attractions instead.

December Average Humidity in Dublin

This chart illustrates the average monthly humidity levels in Dublin, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Dublin is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Dublin

In Dublin in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Dublin, you can check the information here.

Maximum UV Index Levels in Dublin for December

The chart shows the monthly maximum UV Index (UVI) for Dublin in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Dublin typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
Data source: Dublin December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Dublin Compares to Other Months

Weather in Dublin varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Dublin, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Dublin, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)79 mm (3.1 inches)87%moderate
February Weather1°C (34°F)100 mm (3.9 inches)85%moderate
March Weather6°C (43°F)132 mm (5.2 inches)86%high
April Weather11°C (52°F)104 mm (4.1 inches)84%very high
May Weather18°C (64°F)136 mm (5.4 inches)79%very high
June Weather22°C (73°F)118 mm (4.6 inches)82%extreme
July Weather24°C (76°F)115 mm (4.5 inches)79%very high
August Weather23°C (73°F)88 mm (3.5 inches)70%very high
September Weather21°C (69°F)90 mm (3.5 inches)69%very high
October Weather14°C (58°F)100 mm (3.9 inches)76%high
November Weather5°C (42°F)97 mm (3.8 inches)88%moderate
December Weather2°C (36°F)90 mm (3.5 inches)87%moderate

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