Wicklow climate — normals and trends
Wicklow (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.8 °C and it receives 939 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 August (14.6 °C on average) and the coldest is February (5.7 °C). Rainfall peaks in December.
Wicklow averages 3 frost days, 0 hot days (≥ 30 °C) and 161 rainy days per year.
Wicklow has warmed by +0.8 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.
The number of frost days there went from about 5 to 1 per year over the period.
The hottest day of the period reached 22.1 °C (on 19 July 2016) and the coldest -4.1 °C (on 1 January 1979).
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
WicklowLeinster
- coords
- 52.98°, -6.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.8°C
Average daily high
11.4°C
Average daily low
8.2°C
Annual rainfall
939mm
Sunshine / day
8.0h
Mean relative humidity
82%
Average peak wind
28.6km/h
Seasonal range
8.9°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
161 d/yr
Annual snowfall
12.4 cm
Average feels-like high
8.2 °C
Average feels-like low
4.2 °C
Average peak gust
44.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.23 · 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
22.1 °C
19 July 2016
Coldest day
-4.1 °C
1 January 1979
Wettest day
82 mm
25 August 1986
Windiest day
76.9 km/h
24 December 1997
Strongest gust
128.9 km/h
24 December 1997
Hottest feels-like
24.2 °C
19 July 2016
Coldest feels-like
-12.1 °C
1 March 2018
Snowiest day
23.0 cm
8 January 1982
Sunniest day
16.7 h
20 June 1944
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 | 7.4 °C | 0.0 °C | 99 mm | +8 mm |
| Feb | 8.1 °C | +0.9 °C | 87 mm | +15 mm |
| Mar | 9.5 °C | +1.3 °C | 19 mm | -51 mm |
| Apr | 11.2 °C | +1.6 °C | 109 mm | +49 mm |
| May | 13.5 °C | +1.7 °C | 40 mm | -25 mm |
| Jun | 16.2 °C | +1.9 °C | 85 mm | +22 mm |
| Jul | 17.4 °C | +1.4 °C | 102 mm | +34 mm |
| Aug | 17.6 °C | +1.3 °C | 30 mm | -45 mm |
| Sep | 15.5 °C | +0.4 °C | 132 mm | +52 mm |
| Oct | 13.2 °C | +0.4 °C | 106 mm | +8 mm |
| Nov | 11.0 °C | +1.0 °C | 150 mm | +51 mm |
| Dec | 9.3 °C | +0.9 °C | 128 mm | +29 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 Wicklow?
Wicklow has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.8 °C and it receives 939 mm of precipitation per year.
What is the hottest day ever recorded in Wicklow?
The hottest day measured in Wicklow between 1940 and 2025 was 19 July 2016, reaching 22.1 °C.
What is the coldest day in Wicklow?
The coldest day measured in Wicklow between 1940 and 2025 was 1 January 1979, at -4.1 °C.
Does it snow in Wicklow?
Yes. Wicklow gets on average 12.4 cm of snow per year and has around 3 frost days.
Has the climate of Wicklow warmed?
Yes: Wicklow warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wicklow?
The wettest day measured in Wicklow between 1940 and 2025 was 25 August 1986, with 82 mm of rain in 24 hours.
What was the windiest day in Wicklow?
The windiest day measured in Wicklow between 1940 and 2025 was 24 December 1997, with winds reaching 76.9 km/h.
What is the warmest month in Wicklow?
The warmest month in Wicklow is August (14.6 °C on average); the coldest is February (5.7 °C).
How much does it rain in Wicklow?
Wicklow receives on average 939 mm of precipitation per year, spread over about 161 rainy days.
Is it sunny in Wicklow?
Wicklow gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.
What is the biggest single-day snowfall in Wicklow?
The heaviest 24-hour snowfall measured in Wicklow between 1940 and 2025 was 8 January 1982, with 23.0 cm.
Are there tropical nights in Wicklow?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Wicklow.
What was the most extreme apparent temperature in Wicklow?
In Wicklow, between 1940 and 2025, the highest apparent temperature reached 24.2 °C on 19 July 2016, and the lowest was -12.1 °C on 1 March 2018.
Compare Wicklow with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Wicklow