Mallow climate — normals and trends
Mallow (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.5 °C and it receives 881 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 (5.0 °C). Rainfall peaks in December.
Mallow averages 33 frost days, 0 hot days (≥ 30 °C) and 159 rainy days per year.
Mallow 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 40 to 26 per year over the period.
The hottest day of the period reached 29.6 °C (on 13 July 1983) and the coldest -14.4 °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
MallowMunster
- coords
- 52.13°, -8.63°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.5°C
Average daily high
12.6°C
Average daily low
6.4°C
Annual rainfall
881mm
Sunshine / day
7.0h
Mean relative humidity
84%
Average peak wind
19.6km/h
Seasonal range
9.9°C
Frost days (< 0 °C)
33 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
159 d/yr
Annual snowfall
8.2 cm
Average feels-like high
10.0 °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
+0.4 °C
since 1940
+0.1 °C per decade · r² = 0.07 · p = 0.012
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
29.6 °C
13 July 1983
Coldest day
-14.4 °C
22 January 1940
Wettest day
62 mm
25 August 1986
Windiest day
67.6 km/h
30 November 1954
Strongest gust
122.8 km/h
12 February 2014
Hottest feels-like
33.5 °C
13 July 1983
Coldest feels-like
-18.8 °C
22 January 1940
Snowiest day
15.3 cm
5 January 2025
Sunniest day
16.3 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 | 7.3 °C | -0.2 °C | 118 mm | +35 mm |
| Feb | 9.1 °C | +1.2 °C | 105 mm | +37 mm |
| Mar | 11.3 °C | +1.7 °C | 38 mm | -33 mm |
| Apr | 14.7 °C | +3.0 °C | 67 mm | +3 mm |
| May | 17.8 °C | +3.5 °C | 51 mm | -23 mm |
| Jun | 17.9 °C | +1.0 °C | 61 mm | -1 mm |
| Jul | 19.4 °C | +1.1 °C | 91 mm | +25 mm |
| Aug | 19.5 °C | +1.5 °C | 45 mm | -29 mm |
| Sep | 15.6 °C | -0.4 °C | 111 mm | +38 mm |
| Oct | 13.3 °C | +0.2 °C | 115 mm | +32 mm |
| Nov | 10.8 °C | +1.1 °C | 119 mm | +43 mm |
| Dec | 8.8 °C | +0.7 °C | 90 mm | +3 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 Mallow?
Mallow has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.5 °C and it receives 881 mm of precipitation per year.
What is the hottest day ever recorded in Mallow?
The hottest day measured in Mallow between 1940 and 2025 was 13 July 1983, reaching 29.6 °C.
What is the coldest day in Mallow?
The coldest day measured in Mallow between 1940 and 2025 was 22 January 1940, at -14.4 °C.
Does it snow in Mallow?
Yes. Mallow gets on average 8.2 cm of snow per year and has around 33 frost days.
Has the climate of Mallow warmed?
Yes: Mallow warmed by +0.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mallow?
The wettest day measured in Mallow between 1940 and 2025 was 25 August 1986, with 62 mm of rain in 24 hours.
What was the windiest day in Mallow?
The windiest day measured in Mallow between 1940 and 2025 was 30 November 1954, with winds reaching 67.6 km/h.
What is the warmest month in Mallow?
The warmest month in Mallow is July (14.9 °C on average); the coldest is January (5.0 °C).
How much does it rain in Mallow?
Mallow receives on average 881 mm of precipitation per year, spread over about 159 rainy days.
Is it sunny in Mallow?
Mallow 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 Mallow?
The heaviest 24-hour snowfall measured in Mallow between 1940 and 2025 was 5 January 2025, with 15.3 cm.
Are there tropical nights in Mallow?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Mallow.
What was the most extreme apparent temperature in Mallow?
In Mallow, between 1940 and 2025, the highest apparent temperature reached 33.5 °C on 13 July 1983, and the lowest was -18.8 °C on 22 January 1940.
Compare Mallow with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mallow