Fermoy climate — normals and trends
Fermoy (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.4 °C and it receives 867 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 (14.9 °C on average) and the coldest is January (4.8 °C). Rainfall peaks in December.
Fermoy averages 36 frost days, 0 hot days (≥ 30 °C) and 152 rainy days per year.
Fermoy has warmed by +0.5 °C between 1940 and 2025, or +0.06 °C per decade. This trend is statistically significant.
The number of frost days there went from about 43 to 29 per year over the period.
The hottest day of the period reached 29.2 °C (on 13 July 1983) and the coldest -14.9 °C (on 22 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
FermoyMunster
- coords
- 52.14°, -8.28°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.4°C
Average daily high
12.5°C
Average daily low
6.3°C
Annual rainfall
867mm
Sunshine / day
7.0h
Mean relative humidity
84%
Average peak wind
18.8km/h
Seasonal range
10.1°C
Frost days (< 0 °C)
36 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
152 d/yr
Annual snowfall
8.9 cm
Average feels-like high
10.1 °C
Average feels-like low
3.6 °C
Average peak gust
42.9 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
+0.5 °C
since 1940
+0.1 °C per decade · r² = 0.10 · p = 0.004
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
29.2 °C
13 July 1983
Coldest day
-14.9 °C
22 January 1940
Wettest day
63 mm
25 August 1986
Windiest day
60.3 km/h
23 April 1947
Strongest gust
126.7 km/h
17 January 2009
Hottest feels-like
33.6 °C
13 July 1983
Coldest feels-like
-19.7 °C
22 January 1940
Snowiest day
14.5 cm
19 February 1978
Sunniest day
16.4 h
19 June 2025
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 | 7.1 °C | -0.2 °C | 116 mm | +34 mm |
| Feb | 8.9 °C | +1.2 °C | 96 mm | +29 mm |
| Mar | 11.2 °C | +1.8 °C | 36 mm | -33 mm |
| Apr | 14.5 °C | +2.9 °C | 61 mm | -3 mm |
| May | 17.9 °C | +3.6 °C | 46 mm | -30 mm |
| Jun | 18.0 °C | +1.0 °C | 51 mm | -11 mm |
| Jul | 19.7 °C | +1.3 °C | 80 mm | +14 mm |
| Aug | 19.5 °C | +1.4 °C | 45 mm | -26 mm |
| Sep | 15.7 °C | -0.3 °C | 110 mm | +40 mm |
| Oct | 13.2 °C | +0.2 °C | 118 mm | +36 mm |
| Nov | 10.7 °C | +1.1 °C | 126 mm | +52 mm |
| Dec | 8.7 °C | +0.8 °C | 95 mm | +11 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 Fermoy?
Fermoy has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.4 °C and it receives 867 mm of precipitation per year.
What is the hottest day ever recorded in Fermoy?
The hottest day measured in Fermoy between 1940 and 2025 was 13 July 1983, reaching 29.2 °C.
What is the coldest day in Fermoy?
The coldest day measured in Fermoy between 1940 and 2025 was 22 January 1940, at -14.9 °C.
Does it snow in Fermoy?
Yes. Fermoy gets on average 8.9 cm of snow per year and has around 36 frost days.
Has the climate of Fermoy warmed?
Yes: Fermoy warmed by +0.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Fermoy?
The wettest day measured in Fermoy between 1940 and 2025 was 25 August 1986, with 63 mm of rain in 24 hours.
What was the windiest day in Fermoy?
The windiest day measured in Fermoy between 1940 and 2025 was 23 April 1947, with winds reaching 60.3 km/h.
What is the warmest month in Fermoy?
The warmest month in Fermoy is July (14.9 °C on average); the coldest is January (4.8 °C).
How much does it rain in Fermoy?
Fermoy receives on average 867 mm of precipitation per year, spread over about 152 rainy days.
Is it sunny in Fermoy?
Fermoy gets on average 7.0 hours of sunshine per day, roughly 2,555 hours per year over 1940-2025.
What is the biggest single-day snowfall in Fermoy?
The heaviest 24-hour snowfall measured in Fermoy between 1940 and 2025 was 19 February 1978, with 14.5 cm.
Are there tropical nights in Fermoy?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Fermoy.
What was the most extreme apparent temperature in Fermoy?
In Fermoy, between 1940 and 2025, the highest apparent temperature reached 33.6 °C on 13 July 1983, and the lowest was -19.7 °C on 22 January 1940.
Compare Fermoy with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Fermoy