Measurements:
°C
°F
Killarney
42°F
NW 19 mph
Feels like: 32°F
Precip: 0%
World Resorts Ireland Killarney Weather January Weather in Killarney

Killarney Weather: January

Average Day Temperature: 44.8°F
Average Night Temperature: 38.6°F
Sea Water Temperature: 47.9°F
Number of Sunny Days: 3 days
Sunshine Hours: 7.8 - 9.1 hours
Number of Rainy Days: 9 days
Precipitation Totals: 4.3 in

Air Temperature in January, °F

Select Year: 2026 2025 2024

The highest day temperature in January 2026 was 52°F. The lowest night temperature was 24°F. The average values for day and night temperatures during January were 42.5°F и 35.5°F respectivly.

Killarney Water Sea Temperature in January, °F

Select Year: 2026 2025 2024

The average sea surface temperature in January 2026 for Killarney was 47.5°F. The maximum and minimum values were 45.6°F and 48.6°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in January are gloomy but you can also expect sunny days.

Precipitation Totals in January, in

Precipitation total in January for Killarney is 4.3 in. It makes january one of the most rainy months of the year.

Wind Speed in January, mph

The average wind speed in January is 10.1 mph. It makes January one of the most windy months of the year for Killarney.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Killarney in January is 2.5 hours.

Best Time to Visit Killarney
The most sunny months:
April 5 days
May 4 days
March 4 days
The most warm months:
July 66.2 °F
August 65.5 °F
June 63.3 °F
Warmest sea temperature:
August 62.4 °F
July 61.8 °F
September 60.0 °F
The most cold months:
January 44.8 °F
December 46.6 °F
February 46.8 °F
The most rainy months:
December 9 days
January 9 days
February 8 days
The most windy months:
February 11 mph
December 11 mph
January 10 mph

Killarney on the Weather Map

Ireland Resorts:
NAME
Cork +42
Dublin +40
Killarney +42
Limerick +40
24 Hours Weather Forecast
Killarney
Local time: 21:19
18 feb, wednesday
0000 44°F
NW
11 mph
0300 44°F
NW
6 mph
0600 44°F
N
7 mph
0900 44°F
NW
5 mph
1200 46°F
N
4 mph
1500 46°F
E
4 mph
1800 40°F
NE
4 mph
2100 36°F
NW
1 mph