Dublin weather in May

In May, Dublin sees average daytime highs of 72°F and overnight lows near 51°F, with 0.7 in of rain across 3 wet days and about 14 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 70°F in the first days to 73°F by the end. The sky is clear or mostly clear about 59% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of May to 14 h 24 min by month's end. Set against the rest of the year, May is Dublin's 6th-clearest and 2nd-windiest month. For the whole year in context, see Dublin's year-round climate.

Daytime high
72°
6th warmest
Overnight low
51°
7th coldest
Rainfall
0.7 in
3 wet days
Daylight
14 hours
5:03 AM – 7:05 PM
Cloud cover
36%
6th clearest
Wind
6 mph
2nd windiest
Solar energy
7.27 kWh/m²
Travel score
8.2
out of 10

Dublin is city in Alameda County, California, United States.

Density
1,494/km²
people per km²
Founded
1982

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 70°F in the first days to 73°F by the end.

A typical May day in Dublin reaches about 72°F in the afternoon and slips back to 51°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 63°F and 83°F. Set against its neighbours, May runs about 5°F warmer than April and about 5°F cooler than June.

40°50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17049
27049
37149
47149
57150
67150
77150
87150
97150
107150
117150
127150
137150
147151
157151
167151
177151
187151
197251
207251
217251
227251
237252
247252
257352
267352
277352
287352
297352
307452
317453

Dublin weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 42°3.599.74.2
Feb60° / 43°3.78.910.54.9
Mar63° / 45°2.88.411.76.0
Apr67° / 47°1.34.812.97.1
May72° / 51°0.73148.2
Jun77° / 54°0.10.914.69.1
Jul80° / 57°0.00.214.39.0
Aug80° / 57°0.10.213.59.0
Sep79° / 55°0.10.412.39.0
Oct74° / 52°0.82.9118.6
Nov64° / 46°1.65.5106.4
Dec57° / 42°3.28.79.44.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
36931
46931
56931
66931
76931
86931
96931
106931
116931
127030
137030
147030
157228
167228
177228
187327
197327
207426
217525
227624
237624
247723
257822
267822
277921
287921
297921
307921
317921

Chance of precipitation in May

Any precipitation

Dublin gets around 0.7 in of rain over 3 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 10% and peaks near 11% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
211
311
411
511
611
711
811
911
1011
1111
1211
1311
1411
1511
1611
1710
1810
1910
2010
219
229
239
248
258
267
277
287
296
306
316

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19730
29730
39730
49730
59730
69730
79730
89730
99730
109730
119730
129730
139730
149640
159640
169640
179640
189550
199550
209550
219460
229460
239370
249370
259280
269280
279091
289091
2989101
3089101
3189110

Wind in May

Winds average 6 mph in May.

Across May, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 min at the start of May to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 5:19 AM to 4:53 AM, and sunset from 6:51 PM to 7:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:196:51
213.65:186:52
313.65:166:53
413.65:156:54
513.75:146:55
613.75:136:56
713.75:126:57
813.85:116:58
913.85:106:58
1013.85:096:59
1113.95:087:00
1213.95:077:01
1313.95:067:02
1414.05:057:03
1514.05:047:04
1614.05:037:05
1714.15:027:06
1814.15:027:06
1914.15:017:07
2014.15:007:08
2114.24:597:09
2214.24:597:10
2314.24:587:11
2414.24:577:11
2514.34:577:12
2614.34:567:13
2714.34:557:14
2814.34:557:15
2914.34:547:15
3014.44:547:16
3114.44:537:17

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.27 kWh/m².

For context, solar energy here swings from a low near 2.23 kWh/m² to a high of 8.04 kWh/m² in June across the year — May's 7.27 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.9Intense
26.9Intense
37.0Intense
47.0Intense
57.0Intense
67.0Intense
77.1Intense
87.1Intense
97.1Intense
107.1Intense
117.2Intense
127.2Intense
137.2Intense
147.2Intense
157.2Intense
167.3Intense
177.3Intense
187.3Intense
197.3Intense
207.3Intense
217.4Intense
227.4Intense
237.4Intense
247.5Intense
257.5Intense
267.5Intense
277.5Intense
287.6Intense
297.6Intense
307.6Intense
317.7Intense
Planning a trip in May

Is May a good time to visit Dublin?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.2
Sightseeing
6th-best month of the year
5.7
Beach & pool
6th-best month of the year

May is one of the better times to visit Dublin for general sightseeing.

What to pack for Dublin in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Dublin sees daytime highs around 72°F and nights near 51°F. Pack sun protection. Worth having: light clothes. About 3 days see rain.

sun protectionlight clothes

Sea temperature near Dublin in May

The nearest coast averages about 54°F in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 33 mi away) is warmest in August at about 59°F and coldest in April near 54°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

52°54°56°58°60°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°F)Comfort
Jan54Bracing
Feb54Bracing
Mar54Bracing
Apr54Bracing
May54Bracing
Jun55Bracing
Jul57Bracing
Aug59Bracing
Sep59Bracing
Oct58Bracing
Nov56Bracing
Dec55Bracing

UV index in Dublin in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Dublin peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 10Dec 15UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Moderate

Air quality in Dublin in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Dublin is worst in August — around 25 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (June, 10 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateAug 1824 µg/m³Jun 1110 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar16Moderate
Apr12Moderate
May10Good
Jun10Good
Jul11Good
Aug25Moderate
Sep17Moderate
Oct20Moderate
Nov18Moderate
Dec13Moderate
Location & terrain

Where is Dublin?

Dublin sits at 37.7°N, 121.9°W, 367 ft above sea level, in United States. The nearest listed city is Pleasanton, 4.3 mi away.

Topography around Dublin

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Dublin.

Within 2 miles, the terrain around Dublin has significant variations in elevation — a maximum elevation change of 1,125 ft around an average of 528 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,162 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,449 ft.

The land around Dublin is covered by artificial surfaces (45%), trees (31%) and grassland (22%) within 2 miles, grassland (44%), trees (29%) and artificial surfaces (23%) within 10 miles, and grassland (28%), trees (27%) and water (20%) within 50 miles.

2 miles
1,125 ft
10 miles
2,162 ft
50 miles
4,449 ft
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Pleasanton 4.3 mi · San Ramon 5.6 mi · Castro Valley 8.1 mi · Hayward 8.1 mi · Union City 8.7 mi · Danville 8.7 mi · Livermore 9.3 mi · Ashland 9.9 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Dublin (37.7022°, -121.9358°, elevation 367 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).