Nenagh climate — normals and trends
Nenagh (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.5 °C and it receives 942 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 (15.0 °C on average) and the coldest is January (4.7 °C). Rainfall peaks in December.
Nenagh averages 29 frost days, 0 hot days (≥ 30 °C) and 167 rainy days per year.
Nenagh 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 36 to 22 per year over the period.
The hottest day of the period reached 29.9 °C (on 13 July 1983) and the coldest -11.7 °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
NenaghMunster
- coords
- 52.86°, -8.20°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.5°C
Average daily high
12.5°C
Average daily low
6.6°C
Annual rainfall
942mm
Sunshine / day
6.8h
Mean relative humidity
84%
Average peak wind
19.4km/h
Seasonal range
10.3°C
Frost days (< 0 °C)
29 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
167 d/yr
Annual snowfall
10.9 cm
Average feels-like high
9.9 °C
Average feels-like low
3.8 °C
Average peak gust
42.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.4 °C
since 1940
+0.1 °C per decade · r² = 0.07 · p = 0.014
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
29.9 °C
13 July 1983
Coldest day
-11.7 °C
20 January 1940
Wettest day
61 mm
25 August 1986
Windiest day
64.0 km/h
24 December 1997
Strongest gust
148.3 km/h
12 January 1974
Hottest feels-like
33.0 °C
13 July 1983
Coldest feels-like
-16.7 °C
20 January 1940
Snowiest day
17.3 cm
8 December 1954
Sunniest day
16.6 h
20 June 2022
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 | -0.1 °C | 101 mm | +15 mm |
| Feb | 8.8 °C | +1.2 °C | 96 mm | +24 mm |
| Mar | 11.4 °C | +1.9 °C | 33 mm | -40 mm |
| Apr | 14.8 °C | +3.1 °C | 69 mm | +2 mm |
| May | 17.7 °C | +3.3 °C | 68 mm | -10 mm |
| Jun | 17.9 °C | +1.0 °C | 72 mm | +3 mm |
| Jul | 19.4 °C | +1.2 °C | 91 mm | +17 mm |
| Aug | 19.4 °C | +1.4 °C | 53 mm | -30 mm |
| Sep | 15.5 °C | -0.5 °C | 123 mm | +44 mm |
| Oct | 13.1 °C | +0.2 °C | 126 mm | +40 mm |
| Nov | 10.4 °C | +1.0 °C | 129 mm | +47 mm |
| Dec | 8.6 °C | +0.8 °C | 86 mm | -6 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 Nenagh?
Nenagh has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.5 °C and it receives 942 mm of precipitation per year.
What is the hottest day ever recorded in Nenagh?
The hottest day measured in Nenagh between 1940 and 2025 was 13 July 1983, reaching 29.9 °C.
What is the coldest day in Nenagh?
The coldest day measured in Nenagh between 1940 and 2025 was 20 January 1940, at -11.7 °C.
Does it snow in Nenagh?
Yes. Nenagh gets on average 10.9 cm of snow per year and has around 29 frost days.
Has the climate of Nenagh warmed?
Yes: Nenagh warmed by +0.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nenagh?
The wettest day measured in Nenagh between 1940 and 2025 was 25 August 1986, with 61 mm of rain in 24 hours.
What was the windiest day in Nenagh?
The windiest day measured in Nenagh between 1940 and 2025 was 24 December 1997, with winds reaching 64.0 km/h.
What is the warmest month in Nenagh?
The warmest month in Nenagh is July (15.0 °C on average); the coldest is January (4.7 °C).
How much does it rain in Nenagh?
Nenagh receives on average 942 mm of precipitation per year, spread over about 167 rainy days.
Is it sunny in Nenagh?
Nenagh gets on average 6.8 hours of sunshine per day, roughly 2,482 hours per year over 1940-2025.
What is the biggest single-day snowfall in Nenagh?
The heaviest 24-hour snowfall measured in Nenagh between 1940 and 2025 was 8 December 1954, with 17.3 cm.
Are there tropical nights in Nenagh?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Nenagh.
What was the most extreme apparent temperature in Nenagh?
In Nenagh, between 1940 and 2025, the highest apparent temperature reached 33.0 °C on 13 July 1983, and the lowest was -16.7 °C on 20 January 1940.
Compare Nenagh with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Nenagh