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January Weather in Cavan, Ireland

Last updated: August 23, 2025

In January, the average temperature in Cavan, Ireland hovers around 5°C (42°F). Expect chilly conditions, with minimum temperatures dipping to -4°C (25°F) and occasional highs reaching 14°C (57°F). Rain is also a factor, with an average precipitation total of 61 mm (2.4 in) spread over 11 days. Be prepared for a damp atmosphere, as the average humidity sits at a brisk 85%.

January Temperature in Cavan

In January in Cavan, the average temperature is 5°C (42°F). Maximum temperatures can reach 14°C (57°F), while minimum temperatures can drop as low as -4°C (25°F). Be prepared for chilly weather and bring warm clothing if you're planning to travel during this time.

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

The chart illustrates January 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, January typically has an average temperature of 5°C (42°F), with highs reaching up to 14°C (57°F) and lows dropping to around -4°C (25°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.

January Precipitation in Cavan

In Cavan in January, the total precipitation amount is 61 mm (2.4 in) over the course of 11 days.

January Precipitation Trends in Cavan

The chart displays monthly precipitation patterns in Cavan, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Cavan, January typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6196865270888212173858893
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Cavan

In Cavan in January, humidity is 85%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and requiring extra layers to stay warm while exploring.

January Average Humidity in Cavan

This chart illustrates the average monthly humidity levels in Cavan, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Cavan is approximately 85%, 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 January generated using information from the Copernicus Climate Change Service.

January UV Index in Cavan

In Cavan in January, 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 January

The chart shows the monthly maximum UV Index (UVI) for Cavan in January, 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 January, the maximum UV index in Cavan typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Cavan January 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 January 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 January’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 January’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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