Forio weather in May

In May, Forio sees average daytime highs of 19°C and overnight lows near 17°C, with 32 mm of rain across 5.1 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 17°C in the first days to 21°C by the end. The sky is clear or mostly clear about 57% 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 Forio's 5th-clearest and 9th-windiest month. For the whole year in context, see Forio's year-round climate.

Daytime high
19°
6th warmest
Overnight low
17°
7th coldest
Rainfall
32 mm
5.1 wet days
Daylight
14 h 18 min
4:53 AM – 7:09 PM
Cloud cover
38%
5th clearest
Wind
14 km/h
9th windiest
Solar energy
6.61 kWh/m²
Travel score
7.2
out of 10

Forio 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 17°C in the first days to 21°C by the end.

A typical May day in Forio reaches about 19°C in the afternoon and slips back to 17°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 21°C. Set against its neighbours, May runs about 3°C warmer than April and about 4°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11716
21716
31816
41816
51816
61816
71816
81816
91817
101817
111917
121917
131917
141917
151917
161917
171917
181918
191918
202018
212018
222018
232018
242018
252018
262018
272019
282019
292119
302119
312119

Forio 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° / 11°9610.99.43.6
Feb13° / 11°829.910.43.5
Mar14° / 12°73911.74.2
Apr16° / 14°567.813.15.3
May19° / 17°325.114.27.2
Jun23° / 21°152.514.98.6
Jul25° / 24°91.414.69.1
Aug26° / 25°162.113.68.7
Sep24° / 22°737.712.37.7
Oct21° / 19°1049.910.96.7
Nov17° / 15°15613.49.75.3
Dec14° / 12°12512.49.14.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% 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 (%)
16436
26535
36634
46733
56733
66832
76931
86931
97129
107129
117228
127228
137228
147327
157327
167327
177327
187426
197426
207525
217525
227525
237624
247723
257723
267723
277723
287822
297822
307822
317822

Chance of precipitation in May

Any precipitation

Forio gets around 32 mm of rain over 5.1 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 17% and peaks near 24% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
124
223
323
422
522
621
721
820
919
1019
1118
1217
1317
1416
1516
1616
1716
1816
1915
2015
2115
2214
2314
2414
2514
2613
2713
2813
2913
3013
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 41% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
14249800
24051900
338511100
436521200
534521400
633511600
731511800
830511900
929502100
1027492300
1126482500
1225482700
1324472810
1423463010
1522443210
1621433420
1720423620
1820403730
1919393930
2019374040
2118364150
2217354260
2316334370
2416324480
25153145100
26143045110
27132946120
28122846140
29112647160
30112547170
31102446191

Wind in May

Winds average 14 km/h in May.

Across May, daily wind ranges from about 13 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
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light 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 5:10 AM to 4:42 AM, and sunset from 6:53 PM to 7:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:106:53
213.85:096:54
313.85:086:55
413.85:066:56
513.95:056:57
613.95:046:59
713.95:037:00
814.05:017:01
914.05:007:02
1014.14:597:03
1114.14:587:04
1214.14:577:05
1314.24:567:06
1414.24:557:07
1514.24:547:08
1614.34:537:09
1714.34:527:10
1814.34:517:11
1914.44:507:12
2014.44:497:13
2114.44:487:13
2214.44:487:14
2314.54:477:15
2414.54:467:16
2514.54:457:17
2614.64:457:18
2714.64:447:19
2814.64:437:20
2914.64:437:21
3014.74:427:21
3114.74:427:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.61 kWh/m².

For context, solar energy here swings from a low near 1.76 kWh/m² to a high of 7.23 kWh/m² in June across the year — May's 6.61 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.2Intense
46.2Intense
56.3Intense
66.3Intense
76.3Intense
86.4Intense
96.4Intense
106.4Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.6Intense
166.6Intense
176.6Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.8Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.9Intense
286.9Intense
296.9Intense
306.9Intense
317.0Intense
Planning a trip in May

Hazard calendar for Forio

In seasonPeak

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

Forio's rainy season runs September–March, 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 Forio?

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

7.2
Sightseeing
5th-best month of the year
3.1
Beach & pool
6th-best month of the year

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

What to pack for Forio in May

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

In May, Forio sees daytime highs around 19°C and nights near 17°C. Pack sun protection. About 5 days see rain.

sun protection

Sea temperature near Forio in May

The nearest coast averages about 19°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 13 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 27 to Nov 5 — about 5.4 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun23Refreshing
Jul25Warm
Aug26Warm
Sep24Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Forio 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 Forio peaks around July 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 16UV 9Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Forio?

Forio sits at 40.7°N, 13.9°E, 18 m above sea level, in Italy. The nearest listed city is Ischia, 7.0 km away.

Topography around Forio

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

Within 3 km, the terrain around Forio has large variations in elevation — a maximum elevation change of 761 m around an average of 78 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 761 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,574 m.

The land around Forio is covered by water (56%) and trees (30%) within 3 km, water (94%) within 16 km, and water (63%) and trees (22%) within 80 km.

3 km
761 m
16 km
761 m
80 km
1,574 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Ischia 7.0 km · Ischia Porto 8.0 km · Bacoli 19 km · Pozzuoli 23 km · Monterusciello 24 km · Bagnoli 27 km · Quarto 29 km · Pianura 30 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 Forio (40.7376°, 13.86°, elevation 18 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).