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December Weather in Millstreet, Ireland

Last updated: August 23, 2025

In December, the average temperature in Millstreet, Ireland hovers around 6°C (44°F), with a minimum dip to -3°C (27°F) and a maximum climb to 13°C (57°F). Expect significant moisture, as 114 mm (4.5 in) of precipitation is spread over 17 days, contributing to an average humidity level of 83%. Prepare for a chilly, wet month!

December Temperature in Millstreet

In December in Millstreet, the average temperature is 6°C (44°F). Maximums can reach 13°C (57°F), while minimums can dip as low as -3°C (27°F). Be sure to pack warm clothing and prepare for chilly weather when traveling during this time.

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

The chart illustrates December temperature patterns in Millstreet, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millstreet, December typically has an average temperature of 6°C (44°F), with highs reaching up to 13°C (57°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec424343475156605855504544
Data source: Temperature data for Millstreet 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 Millstreet

In Millstreet in December, the precipitation amount is 114 mm (4.5 in) recorded over 17 days.

December Precipitation Trends in Millstreet

The chart displays monthly precipitation patterns in Millstreet, 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 Millstreet, December typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec69121100828571691057910787114
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Millstreet

In Millstreet in December, humidity is 83%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and potentially leading to a sense of heaviness in the air.

December Average Humidity in Millstreet

This chart illustrates the average monthly humidity levels in Millstreet, 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 Millstreet is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%85%84%84%84%85%85%84%85%86%84%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Millstreet

In Millstreet in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Millstreet.

Maximum UV Index Levels in Millstreet for December

The chart shows the monthly maximum UV Index (UVI) for Millstreet 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 Millstreet typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678875421
Data source: Millstreet 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 Millstreet Compares to Other Months

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

This table compares monthly weather conditions in Millstreet, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)69 mm (2.7 inches)83%low
February Weather6°C (43°F)121 mm (4.7 inches)85%low
March Weather6°C (43°F)100 mm (3.9 inches)84%moderate
April Weather8°C (47°F)82 mm (3.2 inches)84%high
May Weather11°C (52°F)85 mm (3.3 inches)84%high
June Weather13°C (56°F)71 mm (2.8 inches)85%very high
July Weather15°C (60°F)69 mm (2.7 inches)85%very high
August Weather15°C (58°F)105 mm (4.1 inches)84%high
September Weather13°C (55°F)79 mm (3.1 inches)85%moderate
October Weather10°C (50°F)107 mm (4.2 inches)86%moderate
November Weather7°C (45°F)87 mm (3.4 inches)84%low
December Weather6°C (44°F)114 mm (4.5 inches)83%low

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