Civitavecchia weather in May

In May, Civitavecchia sees average daytime highs of 19°C and overnight lows near 16°C, with 33 mm of rain across 5.7 wet days and about 14.4 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 20°C by the end. The sky is clear or mostly clear about 55% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 13 h 48 min at the start of May to 14 h 48 min by month's end. Set against the rest of the year, May is Civitavecchia's 5th-clearest and 9th-windiest month. For the whole year in context, see Civitavecchia's year-round climate.

Daytime high
19°
6th warmest
Overnight low
16°
7th coldest
Rainfall
33 mm
5.7 wet days
Daylight
14 h 24 min
4:58 AM – 7:20 PM
Cloud cover
40%
5th clearest
Wind
15 km/h
9th windiest
Solar energy
6.59 kWh/m²
Travel score
6.9
out of 10
Air quality
Good
PM2.5 8.7 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 17°C in the first days to 20°C by the end.

A typical May day in Civitavecchia reaches about 19°C in the afternoon and slips back to 16°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)
11715
21715
31715
41715
51715
61715
71815
81815
91816
101816
111816
121816
131816
141816
151916
161916
171916
181917
191917
201917
211917
221917
231917
242017
252017
262017
272018
282018
292018
302018
312018

Civitavecchia 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
Jan12° / 10°759.99.33.4
Feb12° / 719.110.33.4
Mar13° / 11°627.611.74.2
Apr15° / 13°567.913.15.1
May19° / 16°335.714.46.9
Jun22° / 20°213.2158.4
Jul25° / 23°121.414.89.2
Aug25° / 23°192.313.78.8
Sep23° / 21°777.312.37.6
Oct20° / 17°11710.310.86.5
Nov16° / 14°15312.79.64.9
Dec13° / 11°10112.193.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26238
36337
46436
56535
66535
76634
86634
96733
106733
116832
126832
136832
146931
157030
167129
177129
187228
197228
207327
217327
227327
237426
247525
257525
267525
277525
287525
297525
307624
317624

Chance of precipitation in May

Any precipitation

Civitavecchia gets around 33 mm of rain over 5.7 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 19% 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
723
823
922
1021
1121
1220
1320
1419
1519
1618
1718
1817
1917
2016
2116
2216
2315
2415
2515
2614
2714
2814
2914
3013
3114

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 44% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1514720
2494830
3465040
4445150
5415360
6395380
7375490
83653110
93453130
103353140
113153160
123052180
132951200
142850220
152749231
162648251
172547271
182445292
192444312
202342323
212241343
222140354
232039374
241937385
251836406
261735417
271534438
281433449
2913324610
3012304711
3111294813

Wind in May

Winds average 15 km/h in May.

Across May, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 48 min at the start of May to 14 h 48 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 5:16 AM to 4:46 AM, and sunset from 7:04 PM to 7:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:167:04
213.85:157:05
313.95:137:06
413.95:127:07
514.05:117:09
614.05:097:10
714.05:087:11
814.15:077:12
914.15:067:13
1014.25:047:14
1114.25:037:15
1214.25:027:16
1314.35:017:17
1414.35:007:18
1514.34:597:19
1614.44:587:20
1714.44:577:21
1814.44:567:22
1914.54:557:23
2014.54:547:24
2114.54:537:25
2214.64:527:26
2314.64:517:27
2414.64:517:28
2514.74:507:29
2614.74:497:30
2714.74:487:31
2814.74:487:32
2914.84:477:33
3014.84:467:34
3114.84:467:34

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.59 kWh/m².

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 7.21 kWh/m² in July across the year — May's 6.59 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.2Intense
56.2Intense
66.3Intense
76.3Intense
86.3Intense
96.4Intense
106.4Intense
116.4Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.7Intense
216.7Intense
226.7Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.9Intense
296.9Intense
306.9Intense
316.9Intense
Planning a trip in May

Hazard calendar for Civitavecchia

In seasonPeak

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

Civitavecchia's rainy season runs September–February, 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 Civitavecchia?

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

6.9
Sightseeing
5th-best month of the year
2.7
Beach & pool
6th-best month of the year

May is a reasonable time to visit Civitavecchia for sightseeing.

What to pack for Civitavecchia in May

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

In May, Civitavecchia sees daytime highs around 19°C and nights near 16°C. Pack sun protection. About 6 days see rain.

sun protection

Sea temperature near Civitavecchia 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 15 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 2 to Oct 29 — about 4.9 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Civitavecchia 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 Civitavecchia peaks around July 14 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 14UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Civitavecchia?

Civitavecchia sits at 42.1°N, 11.8°E, 10 m above sea level, in Italy. The nearest listed city is Cerveteri, 27 km away.

Topography around Civitavecchia

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

Within 3 km, the terrain around Civitavecchia has only modest variations in elevation — a maximum elevation change of 178 m around an average of 37 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 636 m; within 80 km, large variations in elevation — a maximum elevation change of 1,119 m.

The land around Civitavecchia is covered by water (38%) and artificial surfaces (25%) within 3 km, water (54%) within 16 km, and water (37%) and trees (32%) within 80 km.

3 km
178 m
16 km
636 m
80 km
1,119 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Cerveteri 27 km · Ladispoli 28 km · Viterbo 44 km · Fiumicino 51 km · Lido di Ostia 56 km · Acilia-Castel Fusano-Ostia Antica 57 km · Vatican City 58 km · Casal Palocco 60 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 Civitavecchia (42.0932°, 11.7967°, elevation 10 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).