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December Weather in Hartstown, Ireland

Last updated: August 23, 2025

In December, the average temperature in Hartstown, Ireland hovers around 7°C (44°F). Expect temperatures to dip as low as -3°C (27°F) and peak at 13°C (56°F). With an average precipitation of 83 mm (3.3 in) over 14 days, and an average humidity level of 84%, prepare for a chilly and damp atmosphere throughout the month.

December Temperature in Hartstown

In December in Hartstown, the average temperature is 7°C (44°F). Maximums can reach 13°C (56°F), and minimums can be as low as -3°C (27°F). Be sure to pack warm clothing if you're planning to visit this month!

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

The chart illustrates December temperature patterns in Hartstown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartstown, December typically has an average temperature of 7°C (44°F), with highs reaching up to 13°C (56°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec434445485358616057524644
Data source: Temperature data for Hartstown 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 Hartstown

In Hartstown in December, the precipitation amount is 83 mm (3.3 in) spread over a period of 14 days.

December Precipitation Trends in Hartstown

The chart displays monthly precipitation patterns in Hartstown, 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 Hartstown, December typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec517474456470719467758483
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hartstown

In Hartstown in December humidity is 84%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making it uncomfortable for traveling and requiring extra layers to stay warm and dry.

December Average Humidity in Hartstown

This chart illustrates the average monthly humidity levels in Hartstown, 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 Hartstown 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 Hartstown

In Hartstown 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 Hartstown.

Maximum UV Index Levels in Hartstown for December

The chart shows the monthly maximum UV Index (UVI) for Hartstown 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 Hartstown typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Hartstown 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 Hartstown Compares to Other Months

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

This table compares monthly weather conditions in Hartstown, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)50 mm (2.0 inches)85%low
February Weather6°C (44°F)74 mm (2.9 inches)86%low
March Weather7°C (45°F)74 mm (2.9 inches)86%moderate
April Weather9°C (48°F)45 mm (1.8 inches)85%moderate
May Weather12°C (53°F)64 mm (2.5 inches)83%high
June Weather15°C (59°F)70 mm (2.8 inches)85%very high
July Weather16°C (62°F)71 mm (2.8 inches)86%very high
August Weather16°C (60°F)94 mm (3.7 inches)85%high
September Weather14°C (57°F)67 mm (2.6 inches)86%moderate
October Weather11°C (52°F)75 mm (3.0 inches)87%moderate
November Weather8°C (47°F)84 mm (3.3 inches)86%low
December Weather7°C (44°F)83 mm (3.3 inches)84%low

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