Alghero weather in May

In May, Alghero sees average daytime highs of 20°C and overnight lows near 16°C, with 35 mm of rain across 5.4 wet days and about 14.2 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 22°C by the end. The sky is clear or mostly clear about 52% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 13 h 42 min at the start of May to 14 h 42 min by month's end. Set against the rest of the year, May is Alghero's 5th-clearest and 9th-windiest month. For the whole year in context, see Alghero's year-round climate.

Daytime high
20°
6th warmest
Overnight low
16°
7th coldest
Rainfall
35 mm
5.4 wet days
Daylight
14 h 12 min
5:16 AM – 7:30 PM
Cloud cover
42%
5th clearest
Wind
13 km/h
9th windiest
Solar energy
6.81 kWh/m²
Travel score
7.3
out of 10

Alghero is chief town of the homonym municipality.

Air quality
Good
PM10 18.9 µg/m³ · 2019

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 19°C in the first days to 22°C by the end.

A typical May day in Alghero reaches about 20°C in the afternoon and slips back to 16°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 23°C. Set against its neighbours, May runs about 3°C warmer than April and about 4°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
11814
21914
31914
41914
51914
61915
71915
81915
91915
101915
112015
122015
132015
142015
152016
162016
172016
182016
192016
202116
212116
222116
232116
242117
252117
262117
272117
282217
292217
302217
312217

Alghero weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan13° / 10°528.69.43.9
Feb13° / 508.110.43.8
Mar15° / 11°447.511.74.8
Apr17° / 12°508135.7
May20° / 16°355.414.27.3
Jun24° / 19°152.614.88.7
Jul26° / 22°50.914.69.0
Aug27° / 22°71.613.68.6
Sep24° / 20°355.112.38.1
Oct21° / 17°668.110.97.1
Nov17° / 14°9211.19.75.5
Dec14° / 11°719.99.24.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 31%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36535
46535
56535
66634
76634
86634
96733
106733
116733
126733
136733
146832
156931
166931
177030
187030
197030
207030
217129
227129
237129
247228
257228
267327
277327
287525
297525
307624
317624

Chance of precipitation in May

Any precipitation

Alghero gets around 35 mm of rain over 5.4 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 18% and peaks near 25% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
125
224
324
423
523
622
722
821
921
1020
1120
1219
1318
1418
1518
1617
1717
1816
1916
2016
2115
2215
2314
2414
2513
2613
2713
2812
2912
3012
3112

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the comfortable band about 47% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1574030
2564130
3534340
4514450
5494560
6474660
7454770
8444880
9424990
104050100
113950110
123751120
133651130
143551140
153352150
163252160
173151180
183051190
192950210
202849220
212749240
222648260
232447281
242347301
252246311
262045332
271945352
281744363
291643383
301542404
311341415

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 42 min at the start of May to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 5:33 AM to 5:04 AM, and sunset from 7:15 PM to 7:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:337:15
213.75:317:16
313.85:307:17
413.85:297:18
513.95:287:19
613.95:267:20
713.95:257:21
814.05:247:22
914.05:237:23
1014.05:227:24
1114.15:217:25
1214.15:207:26
1314.15:197:27
1414.25:177:28
1514.25:167:29
1614.25:167:30
1714.35:157:31
1814.35:147:32
1914.35:137:33
2014.45:127:34
2114.45:117:35
2214.45:107:36
2314.55:107:37
2414.55:097:38
2514.55:087:39
2614.55:077:40
2714.65:077:41
2814.65:067:41
2914.65:067:42
3014.65:057:43
3114.75:047:44

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.81 kWh/m².

For context, solar energy here swings from a low near 1.85 kWh/m² to a high of 7.49 kWh/m² in July across the year — May's 6.81 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.4Intense
36.4Intense
46.4Intense
56.5Intense
66.5Intense
76.5Intense
86.6Intense
96.6Intense
106.6Intense
116.7Intense
126.7Intense
136.7Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.9Intense
196.9Intense
206.9Intense
217.0Intense
227.0Intense
237.0Intense
247.0Intense
257.0Intense
267.1Intense
277.1Intense
287.1Intense
297.1Intense
307.2Intense
317.2Intense
Planning a trip in May

Hazard calendar for Alghero

In seasonPeak

None of Alghero's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Alghero's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Alghero?

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

7.3
Sightseeing
5th-best month of the year
3.9
Beach & pool
6th-best month of the year

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

What to pack for Alghero in May

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

In May, Alghero sees daytime highs around 20°C and nights near 16°C. Pack sun protection. About 5 days see rain.

sun protection

Sea temperature near Alghero in May

The nearest coast averages about 18°C 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 18 km away) is warmest in August at about 25°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 8 to Oct 27 — about 4.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov18Cool
Dec16Cool

UV index in Alghero in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Alghero peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highHighModerateLowJul 15UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7Very high
Jun8Very high
Jul10Very high
Aug7Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Alghero 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 Alghero is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 1615 µg/m³Dec 147 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar13Moderate
Apr13Moderate
May13Moderate
Jun11Good
Jul15Moderate
Aug10Good
Sep10Good
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Alghero?

Alghero sits at 40.6°N, 8.3°E, 7 m above sea level, in Italy. The nearest listed city is Sassari, 27 km away.

OristanoNuoroOlbiaIglesiasAssemini

Topography around Alghero

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Alghero.

Within 3 km, the terrain around Alghero has only modest variations in elevation — a maximum elevation change of 116 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 712 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,336 m.

The land around Alghero is covered by water (45%) and trees (24%) within 3 km, water (39%), grassland (27%) and trees (22%) within 16 km, and water (48%), trees (22%) and grassland (20%) within 80 km.

3 km
116 m
16 km
712 m
80 km
1,336 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Sassari 27 km · Monte Rosello 29 km · Porto Torres 31 km · Oristano 77 km · Nuoro 89 km · Olbia 107 km · Iglesias 140 km · Assemini 152 km

Italy travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
230 V · 50 Hz
Prices
≈ 69% of US
price level, 2025
GDP per capita
$43,309
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 513
Religion
Christian 81%unaffiliated 13%Muslim 5%other 1%

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 Alghero (40.5597°, 8.3195°, elevation 7 m), 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).