See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
12°
Overcast
Feels Like: 10°
Min: 12°
Max: 16°
The next few hours will be overcast, with today reaching 16°C and dropping to 13°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:38
Sunrise
19:19
Sunset
Moon
Waxing Gibbous
18:53
Moonrise
05:51
Moonset
Daily Forecast
Today
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Air Quality Data Available
Upgrade to access real-time air quality data for Killarney.
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Killarney.
View stargazing scoreWeather in Killarney today, September 25, 2026
Killarney stays under cloudy skies on September 25, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. The first half of the day looks overcast, as cloud amounts reach about 100% around 08:00. Brighter weather, if it comes, waits until later.
Expect highs of 16°C and cooler readings close to 12°C. The air stays humid, with relative humidity between 64% and 84% and the peak around 07:00. Airflow remains manageable, reaching about 6.4 km/h around 16:00.
The afternoon keeps an overcast feel, as cloud reaches about 100% around 12:00. Outdoor plans may still want a flexible backup. Expect visibility near 37.5 km, with poorer spells close to 33.7 km. Expect sunrise at 07:38, sunset at 19:19, and 11 hours 41 minutes of sunlight today overall.
The practical takeaway for Killarney on September 25, 2026 is a cloudy day that stays usable, just not particularly bright, around 16°C.
Frequently asked questions about weather in Killarney
How warm does it get in Killarney?
The warmest month in Killarney is July, with average high temperatures of 18°C. The average temperature during this period is around 15°C.
How cold does it get in Killarney?
The coldest month in Killarney is January, with average low temperatures of 3°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Killarney?
The wettest month in Killarney is October, with an average of 135mm of precipitation.
What is the driest time of year in Killarney?
The driest month in Killarney is May, with an average of 80mm of precipitation.
