Clonmel climate — normals and trends
Clonmel (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.7 °C and it receives 864 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 (5.2 °C). Rainfall peaks in October.
Clonmel averages 26 frost days, 0 hot days (≥ 30 °C) and 150 rainy days per year.
Clonmel 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 32 to 20 per year over the period.
The hottest day of the period reached 27.8 °C (on 29 June 1976) and the coldest -12.0 °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
ClonmelMunster
- coords
- 52.35°, -7.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.7°C
Average daily high
12.6°C
Average daily low
6.8°C
Annual rainfall
864mm
Sunshine / day
7.3h
Mean relative humidity
83%
Average peak wind
20.0km/h
Seasonal range
10.0°C
Frost days (< 0 °C)
26 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
150 d/yr
Annual snowfall
8.2 cm
Average feels-like high
10.0 °C
Average feels-like low
4.0 °C
Average peak gust
45.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.5 °C
since 1940
+0.1 °C per decade · r² = 0.11 · p = 0.002
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
27.8 °C
29 June 1976
Coldest day
-12.0 °C
22 January 1940
Wettest day
71 mm
25 August 1986
Windiest day
65.0 km/h
10 February 1958
Strongest gust
144.0 km/h
23 April 1947
Hottest feels-like
32.6 °C
13 July 1983
Coldest feels-like
-17.2 °C
22 January 1940
Snowiest day
16.9 cm
19 February 1978
Sunniest day
16.5 h
20 June 2022
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 7.4 °C | -0.1 °C | 116 mm | +32 mm |
| Feb | 9.0 °C | +1.2 °C | 98 mm | +30 mm |
| Mar | 11.2 °C | +1.8 °C | 37 mm | -31 mm |
| Apr | 14.1 °C | +2.6 °C | 56 mm | -6 mm |
| May | 17.4 °C | +3.2 °C | 37 mm | -34 mm |
| Jun | 18.0 °C | +1.1 °C | 50 mm | -11 mm |
| Jul | 20.0 °C | +1.6 °C | 83 mm | +20 mm |
| Aug | 19.4 °C | +1.3 °C | 42 mm | -28 mm |
| Sep | 16.0 °C | -0.1 °C | 107 mm | +37 mm |
| Oct | 13.3 °C | +0.2 °C | 121 mm | +34 mm |
| Nov | 10.9 °C | +1.1 °C | 130 mm | +53 mm |
| Dec | 9.1 °C | +0.9 °C | 107 mm | +21 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 Clonmel?
Clonmel has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.7 °C and it receives 864 mm of precipitation per year.
What is the hottest day ever recorded in Clonmel?
The hottest day measured in Clonmel between 1940 and 2025 was 29 June 1976, reaching 27.8 °C.
What is the coldest day in Clonmel?
The coldest day measured in Clonmel between 1940 and 2025 was 22 January 1940, at -12.0 °C.
Does it snow in Clonmel?
Yes. Clonmel gets on average 8.2 cm of snow per year and has around 26 frost days.
Has the climate of Clonmel warmed?
Yes: Clonmel warmed by +0.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Clonmel?
The wettest day measured in Clonmel between 1940 and 2025 was 25 August 1986, with 71 mm of rain in 24 hours.
What was the windiest day in Clonmel?
The windiest day measured in Clonmel between 1940 and 2025 was 10 February 1958, with winds reaching 65.0 km/h.
What is the warmest month in Clonmel?
The warmest month in Clonmel is July (15.2 °C on average); the coldest is January (5.2 °C).
How much does it rain in Clonmel?
Clonmel receives on average 864 mm of precipitation per year, spread over about 150 rainy days.
Is it sunny in Clonmel?
Clonmel gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
What is the biggest single-day snowfall in Clonmel?
The heaviest 24-hour snowfall measured in Clonmel between 1940 and 2025 was 19 February 1978, with 16.9 cm.
Are there tropical nights in Clonmel?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Clonmel.
What was the most extreme apparent temperature in Clonmel?
In Clonmel, between 1940 and 2025, the highest apparent temperature reached 32.6 °C on 13 July 1983, and the lowest was -17.2 °C on 22 January 1940.
Compare Clonmel with another city
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Nearby cities
The climate around Clonmel