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 January, the rain falls for 23 days. Throughout January, 160mm (6.3") of precipitation is 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 the month, sunrise is at 8:46 am and sunset at 4:36 pm. On the last day of January, sunrise is at 8:20 am and sunset at 5:22 pm GMT.

Sunshine

In Killarney, the average sunshine in January is 2h.

UV index

In January, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In January, the maximum UV index of 1 translates into these guidelines:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.