Dublin climate

Name: Dublin
Address: IE

Dublin is warmest in July, with average highs of 18 °C, and coldest in February, when nights average 3.8 °C. November is the wettest month (86 mm) and February the driest (58 mm). Figures are 1991–2020 climate normals.

Across a full year Dublin averages 860 mm of rain, 0 days above 25 °C and 6 days below freezing.

Ireland · population 1,024,027 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 18 °C
Coldest month February 3.8 °C
Driest month February 58 mm
Wettest month November 86 mm
Least cloud May 69 % cloud
Hottest on record July 25 °C
Coldest on record December -7.4 °C
Warmest sea August 15 °C

What to expectDublin through the year

Dublin has a clear annual cycle: average daily highs run from 8.2 °C in February to 18 °C in July, a swing of 9.8 °C in mean temperature across the year.

Counted across a normal year, 0 days a year reach 25 °C, 6 nights drop below freezing. The warmest reading in the 1991–2020 record is 25 °C, in July.

Rain is spread fairly evenly through the year, from 58 mm in February to 86 mm in November. There is no dry season to aim for.

The sea off Dublin is warmest in August at 15 °C and coldest in March at 7.9 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	7.9 °C	70 mm	74 %
February	8.2 °C	58 mm	73 %
March	9.6 °C	59 mm	73 %
April	11.5 °C	66 mm	70 %
May	14.2 °C	67 mm	69 %
June	16.8 °C	74 mm	73 %
July	18.4 °C	76 mm	76 %
August	18.2 °C	79 mm	74 %
September	16.3 °C	70 mm	73 %
October	13.3 °C	78 mm	73 %
November	10.2 °C	86 mm	73 %
December	8.3 °C	76 mm	73 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days below 0 °C
January	7.9 °C	4.0 °C	5.9 °C	14.3 °C	-4.2 °C	2
February	8.2 °C	3.8 °C	6.0 °C	14.6 °C	-2.8 °C	2
March	9.6 °C	4.5 °C	7.0 °C	17.5 °C	-5.1 °C	1
April	11.5 °C	6.0 °C	8.8 °C	19.1 °C	-1.0 °C	0
May	14.2 °C	8.5 °C	11.4 °C	22.1 °C	2.4 °C	0
June	16.8 °C	11.2 °C	14.0 °C	24.2 °C	5.0 °C	0
July	18.4 °C	13.0 °C	15.7 °C	25.2 °C	8.1 °C	0
August	18.2 °C	13.0 °C	15.6 °C	25.0 °C	7.8 °C	0
September	16.3 °C	11.3 °C	13.8 °C	23.0 °C	3.6 °C	0
October	13.3 °C	9.0 °C	11.1 °C	19.9 °C	1.1 °C	0
November	10.2 °C	6.3 °C	8.3 °C	16.6 °C	-4.2 °C	0
December	8.3 °C	4.5 °C	6.4 °C	14.9 °C	-7.4 °C	2

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	70 mm	13	8.1 h/day	74 %	84 %	27 km/h	9.1 °C
February	58 mm	12	9.8 h/day	73 %	82 %	26 km/h	8.1 °C
March	59 mm	12	12 h/day	73 %	80 %	24 km/h	7.9 °C
April	66 mm	13	14 h/day	70 %	79 %	22 km/h	8.7 °C
May	67 mm	14	16 h/day	69 %	78 %	21 km/h	10.6 °C
June	74 mm	13	17 h/day	73 %	77 %	20 km/h	13.1 °C
July	76 mm	15	17 h/day	76 %	79 %	19 km/h	14.7 °C
August	79 mm	13	15 h/day	74 %	80 %	20 km/h	15.1 °C
September	70 mm	12	13 h/day	73 %	81 %	21 km/h	14.5 °C
October	78 mm	12	11 h/day	73 %	82 %	24 km/h	13.4 °C
November	86 mm	13	8.6 h/day	73 %	84 %	25 km/h	12.1 °C
December	76 mm	12	7.5 h/day	73 %	84 %	26 km/h	10.6 °C

How Dublin compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Dublin	18 °C	3.8 °C	860 mm	0
Belfast · United Kingdom	18 °C	3.6 °C	913 mm	0
Douglas · Isle of Man	16 °C	5.1 °C	1,033 mm	0
Cork · Ireland	19 °C	4.2 °C	890 mm	0
Liverpool · United Kingdom	19 °C	2.8 °C	1,072 mm	2

Where Dublin ranks

Ranking	Position	Value
The coolest places in Europe in July	16th of 50	18 °C
The coolest places in Europe in August	23rd of 50	18 °C
The coolest places in Europe in June	23rd of 50	17 °C
The coolest places in Europe in May	36th of 50	14 °C

Planning a trip? See the best time to visit Dublin.

QuestionsCommon questions about Dublin’s climate

When is the best time to visit Dublin?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, August sit closest to 20 °C on average, July is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Dublin get?

In July, the warmest month, daily highs average 18 °C. The highest value in the 1991–2020 record is 25 °C.

How cold does it get in winter?

Nights average 3.8 °C in February, the coldest month. A normal year has 6 nights below freezing.

Which month is wettest in Dublin?

November, averaging 86 mm over 13 days with rain. The driest month is February with 58 mm. The year as a whole averages 860 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Dublin rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 53.333°, -6.249° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.