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December Weather in Castlecomer, Ireland

Last updated: August 23, 2025

In December, the average temperature in Castlecomer, Ireland hovers around 6°C (44°F), offering a cool respite. Expect a minimum of -6°C (21°F) and a maximum of 14°C (57°F) throughout the month. With 101 mm (4.0 in) of precipitation spread over 15 days, you might want to keep an umbrella handy. The average humidity stands at a high 84%, adding to the chilly atmosphere.

December Temperature in Castlecomer

In December in Castlecomer, the average temperature is 6°C (44°F). Maximums can reach 14°C (57°F), and minimums can drop as low as -6°C (21°F). Travelers should be prepared for a mix of cool to mild weather, making layering a practical choice for outdoor activities.

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

The chart illustrates December temperature patterns in Castlecomer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castlecomer, December typically has an average temperature of 6°C (44°F), with highs reaching up to 14°C (57°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344475257615956504543
Data source: Temperature data for Castlecomer 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 Castlecomer

In Castlecomer in December, the total precipitation amount is 101 mm (4.0 in) over the course of 15 days.

December Precipitation Trends in Castlecomer

The chart displays monthly precipitation patterns in Castlecomer, 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 Castlecomer, December typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec5188795765666792618585101
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Castlecomer

In Castlecomer in December humidity is 84%. With an average temperature of 6°C (44°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and necessitating layered clothing to stay warm and dry while exploring the area.

December Average Humidity in Castlecomer

This chart illustrates the average monthly humidity levels in Castlecomer, 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 Castlecomer is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%85%83%85%86%85%86%87%87%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Castlecomer

In Castlecomer 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 Castlecomer.

Maximum UV Index Levels in Castlecomer for December

The chart shows the monthly maximum UV Index (UVI) for Castlecomer 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 Castlecomer typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Castlecomer 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 Castlecomer Compares to Other Months

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

This table compares monthly weather conditions in Castlecomer, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)51 mm (2.0 inches)85%low
February Weather6°C (43°F)88 mm (3.5 inches)86%low
March Weather6°C (44°F)79 mm (3.1 inches)86%moderate
April Weather8°C (47°F)57 mm (2.2 inches)85%moderate
May Weather11°C (52°F)65 mm (2.5 inches)83%high
June Weather14°C (58°F)65 mm (2.6 inches)85%very high
July Weather16°C (61°F)67 mm (2.6 inches)86%very high
August Weather15°C (59°F)91 mm (3.6 inches)85%high
September Weather13°C (56°F)61 mm (2.4 inches)86%moderate
October Weather10°C (51°F)85 mm (3.4 inches)87%moderate
November Weather7°C (46°F)85 mm (3.3 inches)86%low
December Weather6°C (44°F)101 mm (4.0 inches)84%low

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