Athy climate — normals and trends
Athy (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.5 °C and it receives 792 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 (15.2 °C on average) and the coldest is January (4.7 °C). Rainfall peaks in December.
Athy averages 31 frost days, 0 hot days (≥ 30 °C) and 151 rainy days per year.
Athy has warmed by +0.6 °C between 1940 and 2025, or +0.07 °C per decade. This trend is statistically significant.
The number of frost days there went from about 39 to 23 per year over the period.
The hottest day of the period reached 30.0 °C (on 29 June 1976) and the coldest -13.2 °C (on 12 January 1982).
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
AthyLeinster
- coords
- 52.99°, -6.98°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.5°C
Average daily high
12.5°C
Average daily low
6.5°C
Annual rainfall
792mm
Sunshine / day
6.9h
Mean relative humidity
83%
Average peak wind
19.9km/h
Seasonal range
10.5°C
Frost days (< 0 °C)
31 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
151 d/yr
Annual snowfall
12.6 cm
Average feels-like high
9.9 °C
Average feels-like low
3.6 °C
Average peak gust
42.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.6 °C
since 1940
+0.1 °C per decade · r² = 0.13 · p = < 0.001
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
30.0 °C
29 June 1976
Coldest day
-13.2 °C
12 January 1982
Wettest day
63 mm
25 August 1986
Windiest day
61.1 km/h
16 September 1961
Strongest gust
136.4 km/h
23 April 1947
Hottest feels-like
32.4 °C
13 July 1983
Coldest feels-like
-18.2 °C
12 January 1982
Snowiest day
23.2 cm
8 December 1954
Sunniest day
16.7 h
20 June 1940
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 | 6.9 °C | -0.1 °C | 84 mm | +12 mm |
| Feb | 8.5 °C | +1.0 °C | 69 mm | +12 mm |
| Mar | 11.4 °C | +2.0 °C | 23 mm | -37 mm |
| Apr | 14.5 °C | +2.8 °C | 79 mm | +22 mm |
| May | 17.2 °C | +2.7 °C | 57 mm | -10 mm |
| Jun | 18.2 °C | +0.9 °C | 58 mm | -3 mm |
| Jul | 20.0 °C | +1.4 °C | 69 mm | +6 mm |
| Aug | 19.7 °C | +1.4 °C | 34 mm | -37 mm |
| Sep | 15.9 °C | -0.3 °C | 101 mm | +35 mm |
| Oct | 13.2 °C | +0.2 °C | 93 mm | +19 mm |
| Nov | 10.5 °C | +1.1 °C | 124 mm | +56 mm |
| Dec | 8.9 °C | +1.2 °C | 91 mm | +15 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 Athy?
Athy has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.5 °C and it receives 792 mm of precipitation per year.
What is the hottest day ever recorded in Athy?
The hottest day measured in Athy between 1940 and 2025 was 29 June 1976, reaching 30.0 °C.
What is the coldest day in Athy?
The coldest day measured in Athy between 1940 and 2025 was 12 January 1982, at -13.2 °C.
Does it snow in Athy?
Yes. Athy gets on average 12.6 cm of snow per year and has around 31 frost days.
Has the climate of Athy warmed?
Yes: Athy warmed by +0.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Athy?
The wettest day measured in Athy between 1940 and 2025 was 25 August 1986, with 63 mm of rain in 24 hours.
What was the windiest day in Athy?
The windiest day measured in Athy between 1940 and 2025 was 16 September 1961, with winds reaching 61.1 km/h.
What is the warmest month in Athy?
The warmest month in Athy is July (15.2 °C on average); the coldest is January (4.7 °C).
How much does it rain in Athy?
Athy receives on average 792 mm of precipitation per year, spread over about 151 rainy days.
Is it sunny in Athy?
Athy gets on average 6.9 hours of sunshine per day, roughly 2,519 hours per year over 1940-2025.
What is the biggest single-day snowfall in Athy?
The heaviest 24-hour snowfall measured in Athy between 1940 and 2025 was 8 December 1954, with 23.2 cm.
Are there tropical nights in Athy?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Athy.
What was the most extreme apparent temperature in Athy?
In Athy, between 1940 and 2025, the highest apparent temperature reached 32.4 °C on 13 July 1983, and the lowest was -18.2 °C on 12 January 1982.
Compare Athy with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Athy