Grottaglie weather in May

In May, Grottaglie sees average daytime highs of 22°C and overnight lows near 15°C, with 38 mm of rain across 6.2 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 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 52% 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 Grottaglie's 5th-clearest and 8th-windiest month. For the whole year in context, see Grottaglie's year-round climate.

Daytime high
22°
5th warmest
Overnight low
15°
8th coldest
Rainfall
38 mm
6.2 wet days
Daylight
14 h 12 min
4:39 AM – 6:54 PM
Cloud cover
41%
5th clearest
Wind
11 km/h
8th windiest
Solar energy
6.67 kWh/m²
Travel score
7.6
out of 10

Grottaglie is chief town of the homonym municipality.

Air quality
Good
PM10 15.8 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 21°C in the first days to 24°C by the end.

A typical May day in Grottaglie reaches about 22°C in the afternoon and slips back to 15°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 26°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12013
22013
32113
42114
52114
62114
72114
82114
92114
102214
112215
122215
132215
142215
152215
162215
172315
182315
192316
202316
212316
222316
232316
242416
252416
262416
272417
282417
292417
302517
312517

Grottaglie 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° / 568.69.43.4
Feb13° / 558.610.43.6
Mar15° / 60911.74.7
Apr18° / 11°548.4136.1
May22° / 15°386.214.27.6
Jun27° / 19°234.514.87.6
Jul30° / 22°152.914.66.4
Aug30° / 22°173.313.66.1
Sep26° / 19°567.212.37.4
Oct22° / 15°738.310.97.1
Nov17° / 12°8299.75.7
Dec13° / 618.89.24.0

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 19% 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
26337
36436
46436
56535
66634
76733
86733
96733
106931
116931
127030
137030
147030
157129
167129
177129
187129
197327
207327
217327
227426
237426
247525
257525
267624
277624
287723
297723
307822
317822

Chance of precipitation in May

Any precipitation

Grottaglie gets around 38 mm of rain over 6.2 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 21% 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
425
524
624
724
823
923
1023
1122
1222
1322
1421
1521
1620
1720
1820
1919
2019
2119
2218
2318
2417
2517
2617
2717
2817
2917
3017
3117

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 47% 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
4663220
5633430
6613630
7603730
8583840
9573940
10554050
11544150
12534160
13514270
14504380
15484390
164644100
174544110
184344120
194245140
204145150
213944160
223844170
233744190
243643201
253542221
263442231
273341251
283141261
293041282
302840292
312740303

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 4:56 AM to 4:28 AM, and sunset from 6:39 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.74:566:39
213.74:556:40
313.84:546:41
413.84:526:42
513.94:516:43
613.94:506:44
713.94:496:45
814.04:486:46
914.04:466:47
1014.04:456:48
1114.14:446:49
1214.14:436:50
1314.14:426:51
1414.24:416:52
1514.24:406:53
1614.24:396:54
1714.34:386:55
1814.34:376:56
1914.34:366:57
2014.44:356:58
2114.44:356:59
2214.44:347:00
2314.54:337:00
2414.54:327:01
2514.54:327:02
2614.54:317:03
2714.64:307:04
2814.64:307:05
2914.64:297:06
3014.64:297:06
3114.74:287:07

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 1.82 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
166.7Intense
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 Grottaglie?

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

7.6
Sightseeing
1st-best month of the year
5.5
Beach & pool
5th-best month of the year

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

What to pack for Grottaglie in May

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

In May, Grottaglie sees daytime highs around 22°C and nights near 15°C. Pack sun protection. Worth having: light clothes. About 6 days see rain.

sun protectionlight clothes

Sea temperature near Grottaglie 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 19 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 May 29 to Nov 1 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Grottaglie 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 Grottaglie 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 Grottaglie?

Grottaglie sits at 40.5°N, 17.4°E, 130 m above sea level, in Italy. The nearest listed city is Francavilla Fontana, 13 km away.

Topography around Grottaglie

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

Within 3 km, the terrain around Grottaglie has only modest variations in elevation — a maximum elevation change of 141 m around an average of 133 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 449 m; within 80 km, significant variations in elevation — a maximum elevation change of 522 m.

The land around Grottaglie is covered by trees (28%), grassland (28%) and cropland (21%) within 3 km, trees (37%), cropland (26%) and grassland (25%) within 16 km, and water (48%) within 80 km.

3 km
141 m
16 km
449 m
80 km
522 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Francavilla Fontana 13 km · Ceglie Messapica 14 km · Paolo VI 14 km · Sava 18 km · Taranto 18 km · Martina Franca 20 km · Manduria 23 km · Ostuni 24 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 Grottaglie (40.5369°, 17.4372°, elevation 130 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).