January weather forecast
Killarney, Ireland

Transitioning from the mild December weather, Killarney's January temperature cools down slightly, offering a chilly embrace. This month proves to be the most rain-soaked period of the year, with precipitation reaching 160mm (6.3"). Winds often accompany this rainfall, enhancing the wintry impression. Sunlight is somehow scarce during this season, rendering the days shorter. Hence, most outdoor activities in January demand proper warm clothing and waterproof jackets.

Temperature

Killarney's coldest period falls in January and February, when the average high-temperatures ascend to 8°C (46.4°F).

Rainfall

In Killarney, in January, during 23 rainfall days, 160mm (6.3") of precipitation is typically accumulated. In Killarney, during the entire year, the rain falls for 235 days and collects up to 1372mm (54.02") of precipitation.

Daylight

The average length of the day in January is 8h and 22min.
On the first day of January, sunrise is at 8:46 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 8:20 am and sunset at 5:22 pm GMT.

Sunshine

The average sunshine in January is 2h.

UV index

The average daily maximum UV index in January in Killarney is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In January, the maximum UV index of 1 suggests this advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.