Killarney climate — normals and trends
Killarney (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.3 °C and it receives 1,186 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (14.4 °C on average) and the coldest is January (4.8 °C). Rainfall peaks in December.
Killarney averages 31 frost days, 0 hot days (≥ 30 °C) and 181 rainy days per year.
Killarney has warmed by +0.4 °C between 1940 and 2025, or +0.05 °C per decade. This trend is statistically significant.
The number of frost days there went from about 37 to 25 per year over the period.
The hottest day of the period reached 29.1 °C (on 13 July 1983) and the coldest -12.2 °C (on 20 January 1940).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
KillarneyMunster
- coords
- 52.06°, -9.51°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.3°C
Average daily high
12.2°C
Average daily low
6.3°C
Annual rainfall
1,186mm
Sunshine / day
7.7h
Mean relative humidity
86%
Average peak wind
19.3km/h
Seasonal range
9.6°C
Frost days (< 0 °C)
31 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
181 d/yr
Annual snowfall
9.6 cm
Average feels-like high
9.7 °C
Average feels-like low
3.6 °C
Average peak gust
47.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.4 °C
since 1940
+0.1 °C per decade · r² = 0.06 · p = 0.020
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
29.1 °C
13 July 1983
Coldest day
-12.2 °C
20 January 1940
Wettest day
61 mm
11 September 2015
Windiest day
60.4 km/h
30 November 1954
Strongest gust
144.7 km/h
12 January 1974
Hottest feels-like
33.2 °C
13 July 1983
Coldest feels-like
-17.6 °C
20 January 1940
Snowiest day
14.1 cm
18 February 1978
Sunniest day
16.2 h
23 June 1949
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 7.0 °C | -0.3 °C | 145 mm | +31 mm |
| Feb | 8.9 °C | +1.2 °C | 164 mm | +68 mm |
| Mar | 11.1 °C | +1.8 °C | 40 mm | -57 mm |
| Apr | 14.5 °C | +3.1 °C | 72 mm | -13 mm |
| May | 17.8 °C | +3.9 °C | 51 mm | -49 mm |
| Jun | 17.0 °C | +0.7 °C | 94 mm | +12 mm |
| Jul | 18.7 °C | +1.1 °C | 114 mm | +28 mm |
| Aug | 19.0 °C | +1.6 °C | 79 mm | -17 mm |
| Sep | 15.0 °C | -0.7 °C | 155 mm | +58 mm |
| Oct | 13.0 °C | +0.2 °C | 131 mm | +20 mm |
| Nov | 10.6 °C | +1.1 °C | 145 mm | +41 mm |
| Dec | 8.3 °C | +0.4 °C | 142 mm | +24 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Killarney?
Killarney has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.3 °C and it receives 1,186 mm of precipitation per year.
What is the hottest day ever recorded in Killarney?
The hottest day measured in Killarney between 1940 and 2025 was 13 July 1983, reaching 29.1 °C.
What is the coldest day in Killarney?
The coldest day measured in Killarney between 1940 and 2025 was 20 January 1940, at -12.2 °C.
Does it snow in Killarney?
Yes. Killarney gets on average 9.6 cm of snow per year and has around 31 frost days.
Has the climate of Killarney warmed?
Yes: Killarney warmed by +0.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Killarney?
The wettest day measured in Killarney between 1940 and 2025 was 11 September 2015, with 61 mm of rain in 24 hours.
What was the windiest day in Killarney?
The windiest day measured in Killarney between 1940 and 2025 was 30 November 1954, with winds reaching 60.4 km/h.
What is the warmest month in Killarney?
The warmest month in Killarney is July (14.4 °C on average); the coldest is January (4.8 °C).
How much does it rain in Killarney?
Killarney receives on average 1,186 mm of precipitation per year, spread over about 181 rainy days.
Is it sunny in Killarney?
Killarney gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Killarney?
The heaviest 24-hour snowfall measured in Killarney between 1940 and 2025 was 18 February 1978, with 14.1 cm.
Are there tropical nights in Killarney?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Killarney.
What was the most extreme apparent temperature in Killarney?
In Killarney, between 1940 and 2025, the highest apparent temperature reached 33.2 °C on 13 July 1983, and the lowest was -17.6 °C on 20 January 1940.
Compare Killarney with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Killarney