nomadseason

January Weather in Callan, Ireland

Last updated: August 23, 2025

In January, the average temperature in Callan, Ireland hovers around 5°C (42°F). Expect a cool climate where temperatures can dip to a chilly -7°C (20°F) at night, while daytime highs reach a comfortable 13°C (56°F). During this month, you can also anticipate 49 mm (1.9 in) of precipitation over approximately 10 days, contributing to an average humidity level of 88%.

January Temperature in Callan

In January in Callan, the average temperature is 5°C (42°F). Maximums can reach 13°C (56°F), while minimums can drop to as low as -7°C (20°F). Be sure to pack warm clothing and prepare for chilly conditions during your travels.

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

The chart illustrates January temperature patterns in Callan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Callan, January typically has an average temperature of 5°C (42°F), with highs reaching up to 13°C (56°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344475257615956504543
Data source: Temperature data for Callan generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Callan

In Callan in January, the total precipitation amount is 49 mm (1.9 in) over the course of 10 days.

January Precipitation Trends in Callan

The chart displays monthly precipitation patterns in Callan, 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 Callan, January typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4994826367646393608687104
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Callan

In Callan in January humidity is 88%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less appealing and leading you to seek warmth indoors instead.

January Average Humidity in Callan

This chart illustrates the average monthly humidity levels in Callan, 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 Callan is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%86%83%83%85%85%88%91%92%89%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Callan

In Callan 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 Callan.

Maximum UV Index Levels in Callan for January

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

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

This table compares monthly weather conditions in Callan, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)49 mm (1.9 inches)88%low
February Weather6°C (43°F)94 mm (3.7 inches)88%low
March Weather6°C (44°F)82 mm (3.2 inches)87%moderate
April Weather8°C (47°F)63 mm (2.5 inches)86%moderate
May Weather11°C (52°F)67 mm (2.6 inches)83%high
June Weather14°C (58°F)64 mm (2.5 inches)83%very high
July Weather16°C (61°F)63 mm (2.5 inches)85%very high
August Weather15°C (59°F)93 mm (3.7 inches)85%high
September Weather13°C (56°F)60 mm (2.4 inches)88%moderate
October Weather10°C (51°F)86 mm (3.4 inches)91%moderate
November Weather7°C (46°F)87 mm (3.4 inches)92%low
December Weather6°C (44°F)104 mm (4.1 inches)89%low

Compare Callan's Climate with Cities Worldwide