Dublin climate — normals and trends
Dublin (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.4 °C and it receives 1,027 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 (27.3 °C on average) and the coldest is January (8.5 °C). Rainfall peaks in July.
Dublin averages 25 frost days, 112 hot days (≥ 30 °C) and 120 rainy days per year.
Dublin has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.1 °C (on 13 July 1980) and the coldest -18.6 °C (on 21 January 1985).
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
DublinGeorgia
- coords
- 32.54°, -82.90°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.4°C
Average daily high
24.5°C
Average daily low
13.3°C
Annual rainfall
1,027mm
Sunshine / day
9.4h
Mean relative humidity
69%
Average peak wind
15.2km/h
Seasonal range
18.8°C
Frost days (< 0 °C)
25 d/yr
Hot days (≥ 30 °C)
112 d/yr
Rainy days (≥ 1 mm)
120 d/yr
Annual snowfall
1.3 cm
Average feels-like high
24.8 °C
Average feels-like low
12.7 °C
Average peak gust
33.6 km/h
Tropical nights (≥ 20 °C)
111 d/yr
Solar radiation
16.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.32 · 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
42.1 °C
13 July 1980
Coldest day
-18.6 °C
21 January 1985
Wettest day
134 mm
11 September 2017
Windiest day
57.6 km/h
11 September 2017
Strongest gust
144.0 km/h
11 September 2017
Hottest feels-like
45.9 °C
1 July 2012
Coldest feels-like
-25.6 °C
21 January 1985
Snowiest day
20.4 cm
10 February 1973
Sunniest day
13.6 h
25 June 2024
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 | 12.5 °C | -1.9 °C | 59 mm | -33 mm |
| Feb | 20.3 °C | +3.7 °C | 40 mm | -54 mm |
| Mar | 23.5 °C | +3.0 °C | 102 mm | -2 mm |
| Apr | 28.4 °C | +3.3 °C | 54 mm | -19 mm |
| May | 29.9 °C | +1.0 °C | 132 mm | +65 mm |
| Jun | 32.8 °C | +0.8 °C | 155 mm | +61 mm |
| Jul | 35.0 °C | +2.1 °C | 107 mm | -1 mm |
| Aug | 30.1 °C | -2.4 °C | 210 mm | +111 mm |
| Sep | 31.0 °C | +1.1 °C | 11 mm | -76 mm |
| Oct | 24.8 °C | -0.4 °C | 50 mm | -9 mm |
| Nov | 22.5 °C | +2.6 °C | 12 mm | -55 mm |
| Dec | 16.0 °C | +0.4 °C | 88 mm | +5 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 Dublin?
Dublin has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.4 °C and it receives 1,027 mm of precipitation per year.
What is the hottest day ever recorded in Dublin?
The hottest day measured in Dublin between 1940 and 2025 was 13 July 1980, reaching 42.1 °C.
What is the coldest day in Dublin?
The coldest day measured in Dublin between 1940 and 2025 was 21 January 1985, at -18.6 °C.
Does it snow in Dublin?
Yes. Dublin gets on average 1.3 cm of snow per year and has around 25 frost days.
Has the climate of Dublin warmed?
Yes: Dublin warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Dublin?
The wettest day measured in Dublin between 1940 and 2025 was 11 September 2017, with 134 mm of rain in 24 hours.
What was the windiest day in Dublin?
The windiest day measured in Dublin between 1940 and 2025 was 11 September 2017, with winds reaching 57.6 km/h.
What is the warmest month in Dublin?
The warmest month in Dublin is July (27.3 °C on average); the coldest is January (8.5 °C).
How much does it rain in Dublin?
Dublin receives on average 1,027 mm of precipitation per year, spread over about 120 rainy days.
Is it sunny in Dublin?
Dublin gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in Dublin?
The heaviest 24-hour snowfall measured in Dublin between 1940 and 2025 was 10 February 1973, with 20.4 cm.
Are there tropical nights in Dublin?
Yes: Dublin has on average 111 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Dublin?
In Dublin, between 1940 and 2025, the highest apparent temperature reached 45.9 °C on 1 July 2012, and the lowest was -25.6 °C on 21 January 1985.
Compare Dublin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Dublin