Ostuni weather in May

In May, Ostuni sees average daytime highs of 21°C and overnight lows near 15°C, with 35 mm of rain across 6 wet days and about 14.2 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 23°C by the end. The sky is clear or mostly clear about 53% of the time in May, and the air most often feels dry.

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 Ostuni's 5th-clearest and 9th-windiest month. For the whole year in context, see Ostuni's year-round climate.

Daytime high
21°
5th warmest
Overnight low
15°
7th coldest
Rainfall
35 mm
6 wet days
Daylight
14 h 18 min
4:38 AM – 6:54 PM
Cloud cover
41%
5th clearest
Wind
13 km/h
9th windiest
Solar energy
6.67 kWh/m²
Travel score
7.4
out of 10

Ostuni is chief town of the homonym municipality.

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 23°C by the end.

A typical May day in Ostuni reaches about 21°C in the afternoon and slips back to 15°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 24°C. Set against its neighbours, May runs about 4°C warmer than April and about 4°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
11914
21914
31914
41914
52014
62014
72014
82014
92015
102015
112015
122115
132115
142115
152115
162115
172116
182116
192116
202216
212216
222216
232216
242216
252217
262217
272317
282317
292317
302317
312317

Ostuni weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 639.29.43.2
Feb12° / 609.310.43.3
Mar14° / 619.111.74.4
Apr17° / 12°528.513.15.7
May21° / 15°35614.27.4
Jun25° / 20°214.114.98.3
Jul28° / 22°142.814.67.9
Aug28° / 23°142.913.67.5
Sep25° / 20°547.312.37.6
Oct21° / 16°738.310.96.9
Nov17° / 12°849.59.75.4
Dec13° / 68109.13.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 29%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26436
36436
46535
56535
66634
76634
86733
96733
106733
116832
126931
137030
147030
157030
167030
177129
187129
197228
207327
217327
227426
237426
247624
257624
267723
277723
287822
297822
307822
317921

Chance of precipitation in May

Any precipitation

Ostuni gets around 35 mm of rain over 6 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 20% and peaks near 26% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
126
226
325
424
524
623
722
822
922
1021
1121
1221
1320
1420
1520
1620
1719
1819
1919
2019
2118
2218
2317
2417
2517
2616
2716
2816
2916
3016
3115

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 43% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1722710
2702910
3673120
4653320
5633430
6603640
7583840
8563950
9554050
10524260
11514360
12494470
13474580
14454690
154347100
164148110
173948120
183849130
193649150
203549160
213449170
223249190
233148200
243047221
252947231
262846251
272745271
282544282
292443302
302343323
312142334

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 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light 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
2913light breeze
3013light 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 4:55 AM to 4:27 AM, and sunset from 6:38 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.74:556:38
213.84:546:39
313.84:536:40
413.84:526:42
513.94:506:43
613.94:496:44
713.94:486:45
814.04:476:46
914.04:456:47
1014.14:446:48
1114.14:436:49
1214.14:426:50
1314.24:416:51
1414.24:406:52
1514.24:396:53
1614.34:386:54
1714.34:376:55
1814.34:366:56
1914.44:356:57
2014.44:346:58
2114.44:346:59
2214.44:337:00
2314.54:327:00
2414.54:317:01
2514.54:317:02
2614.64:307:03
2714.64:297:04
2814.64:297:05
2914.64:287:06
3014.74:277:06
3114.74:277:07

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.67 kWh/m².

For context, solar energy here swings from a low near 1.78 kWh/m² to a high of 7.37 kWh/m² in June across the year — May's 6.67 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.4Intense
66.4Intense
76.4Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.7Intense
186.7Intense
196.7Intense
206.8Intense
216.8Intense
226.8Intense
236.9Intense
246.9Intense
256.9Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.1Intense
317.1Intense
Planning a trip in May

Is May a good time to visit Ostuni?

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

7.4
Sightseeing
5th-best month of the year
4.5
Beach & pool
5th-best month of the year

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

What to pack for Ostuni in May

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

In May, Ostuni sees daytime highs around 21°C and nights near 15°C. Pack sun protection. About 6 days see rain.

sun protection

Sea temperature near Ostuni 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 17 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 1 to Oct 19 — about 4.6 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Refreshing
Oct20Refreshing
Nov17Cool
Dec15Bracing

UV index in Ostuni 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 Ostuni peaks around July 17 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 10Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7High
Jun9Very high
Jul10Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Ostuni?

Ostuni sits at 40.7°N, 17.6°E, 218 m above sea level, in Italy. The nearest listed city is Ceglie Messapica, 11 km away.

Topography around Ostuni

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

Within 3 km, the terrain around Ostuni has only modest variations in elevation — a maximum elevation change of 216 m around an average of 177 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 401 m; within 80 km, significant variations in elevation — a maximum elevation change of 522 m.

The land around Ostuni is covered by trees (52%) and grassland (25%) within 3 km, trees (46%) and water (24%) within 16 km, and water (51%) within 80 km.

3 km
216 m
16 km
401 m
80 km
522 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Ceglie Messapica 11 km · San Vito dei Normanni 14 km · Martina Franca 20 km · Fasano 22 km · Francavilla Fontana 22 km · Grottaglie 24 km · Mesagne 27 km · Brindisi 32 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 Ostuni (40.7291°, 17.5768°, elevation 218 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).