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December Weather in Cavan, Ireland

Last updated: August 23, 2025

In December, the average temperature in Cavan, Ireland hovers around 6°C (43°F). You can expect a minimum of -3°C (28°F) and a potential maximum of 13°C (56°F). The weather is also characterized by a notable precipitation of 93 mm (3.7 in) over approximately 14 days, paired with a high average humidity of 84%.

December Temperature in Cavan

In December in Cavan, the average temperature is 6°C (43°F). The maximum can reach 13°C (56°F), while the minimum can drop to as low as -3°C (28°F). Make sure to pack warm clothing and be prepared for chilly days if you're planning to visit.

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

The chart illustrates December temperature patterns in Cavan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cavan, December typically has an average temperature of 6°C (43°F), with highs reaching up to 13°C (56°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec424244475257605955504543
Data source: Temperature data for Cavan 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 Cavan

In Cavan, in December, the precipitation amount is 93 mm (3.7 in) over the course of 14 days.

December Precipitation Trends in Cavan

The chart displays monthly precipitation patterns in Cavan, 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 Cavan, December typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec6196865270888212173858893
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cavan

In Cavan in December, humidity is 84%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that penetrates your clothing, making outdoor excursions uncomfortable and prompting travelers to seek refuge indoors or find warm, sheltered spots to enjoy their surroundings.

December Average Humidity in Cavan

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

In Cavan 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 Cavan.

Maximum UV Index Levels in Cavan for December

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

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

This table compares monthly weather conditions in Cavan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)61 mm (2.4 inches)85%low
February Weather6°C (43°F)96 mm (3.8 inches)86%low
March Weather7°C (44°F)85 mm (3.4 inches)86%moderate
April Weather8°C (47°F)52 mm (2.0 inches)85%moderate
May Weather11°C (53°F)69 mm (2.7 inches)83%high
June Weather14°C (57°F)88 mm (3.5 inches)85%very high
July Weather16°C (60°F)81 mm (3.2 inches)86%very high
August Weather15°C (59°F)121 mm (4.8 inches)85%high
September Weather13°C (56°F)73 mm (2.9 inches)86%moderate
October Weather10°C (51°F)85 mm (3.3 inches)87%moderate
November Weather7°C (46°F)88 mm (3.5 inches)86%low
December Weather6°C (43°F)93 mm (3.7 inches)84%low

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