Rosignano Solvay-Castiglioncello weather in May

In May, Rosignano Solvay-Castiglioncello sees average daytime highs of 21°C and overnight lows near 14°C, with 63 mm of rain across 8.4 wet days and about 14.5 hours of daylight. It is the 5th-warmest and 8th-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 42% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 13 h 54 min at the start of May to 14 h 54 min by month's end. Set against the rest of the year, May is Rosignano Solvay-Castiglioncello's 5th-clearest and 9th-windiest month. For the whole year in context, see Rosignano Solvay-Castiglioncello's year-round climate.

Daytime high
21°
5th warmest
Overnight low
14°
8th coldest
Rainfall
63 mm
8.4 wet days
Daylight
14 h 30 min
5:00 AM – 7:29 PM
Cloud cover
50%
5th clearest
Wind
8 km/h
9th windiest
Solar energy
6.23 kWh/m²
Travel score
6.8
out of 10

Rosignano Solvay-Castiglioncello is borough of Rosignano Marittimo, Tuscany, Italy.

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 Rosignano Solvay-Castiglioncello reaches about 21°C in the afternoon and slips back to 14°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)
11912
21913
31913
41913
51913
61913
72013
82013
92014
102014
112014
122014
132014
142114
152114
162114
172115
182115
192115
202115
212115
222215
232215
242215
252216
262216
272216
282216
292316
302316
312316

Rosignano Solvay-Castiglioncello weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 638.80.39.22.5
Feb11° / 658.60.610.22.8
Mar14° / 638.60.211.64.2
Apr17° / 10°7610.3013.25.3
May21° / 14°638.4014.56.8
Jun25° / 18°466.3015.27.8
Jul28° / 21°243.2014.97.9
Aug28° / 21°374.9013.87.4
Sep24° / 17°988.9012.37.3
Oct20° / 14°12411.4010.86.2
Nov15° / 10°12613.109.54.2
Dec11° / 8610.50.38.82.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% 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 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35545
45545
55644
65644
75644
85743
95842
105842
115842
125842
135941
145941
155941
166040
176139
186238
196238
206337
216337
226535
236535
246535
256634
266634
276634
286733
296733
306733
316733

Chance of precipitation in May

Any precipitation

Rosignano Solvay-Castiglioncello gets around 63 mm of rain over 8.4 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 27% and peaks near 36% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
236
335
435
534
633
733
832
931
1030
1129
1229
1328
1428
1527
1626
1726
1825
1925
2024
2124
2223
2323
2423
2522
2622
2722
2822
2922
3022
3122

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 (%)
1693010
2663220
3633520
4613630
5593830
6564040
7544150
8534250
9504460
10484570
11474680
12454780
13434890
144149100
154050100
163851110
173750121
183551131
193451141
203351151
213250171
223150182
232949202
242848222
252647243
262546263
272345284
282143314
292042335
301940356
311738377

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 min at the start of May to 14 h 54 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 5:19 AM to 4:47 AM, and sunset from 7:12 PM to 7:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:197:12
213.95:177:13
314.05:167:14
414.05:157:16
514.15:137:17
614.15:127:18
714.15:117:19
814.25:097:20
914.25:087:21
1014.35:077:23
1114.35:057:24
1214.35:047:25
1314.45:037:26
1414.45:027:27
1514.55:017:28
1614.55:007:29
1714.54:597:30
1814.64:587:31
1914.64:577:32
2014.64:567:34
2114.74:557:35
2214.74:547:36
2314.74:537:37
2414.84:527:38
2514.84:517:39
2614.84:517:40
2714.84:507:40
2814.94:497:41
2914.94:487:42
3014.94:487:43
3114.94:477:44

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.23 kWh/m².

For context, solar energy here swings from a low near 1.44 kWh/m² to a high of 7 kWh/m² in July across the year — May's 6.23 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.8Bright
55.8Bright
65.9Bright
75.9Bright
85.9Bright
96.0Bright
106.0Intense
116.0Intense
126.1Intense
136.1Intense
146.2Intense
156.2Intense
166.2Intense
176.3Intense
186.3Intense
196.3Intense
206.4Intense
216.4Intense
226.4Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.6Intense
306.6Intense
316.6Intense
Planning a trip in May

Is May a good time to visit Rosignano Solvay-Castiglioncello?

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

6.8
Sightseeing
5th-best month of the year
4.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Rosignano Solvay-Castiglioncello for sightseeing.

What to pack for Rosignano Solvay-Castiglioncello in May

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

In May, Rosignano Solvay-Castiglioncello sees daytime highs around 21°C and nights near 14°C. Pack sun protection. Worth having: rain gear. About 8 days see rain.

sun protectionrain gear

Sea temperature near Rosignano Solvay-Castiglioncello 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 offshore is warmest in August at about 25°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 3 to Oct 22 — 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
Jun22Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov18Cool
Dec16Cool

UV index in Rosignano Solvay-Castiglioncello in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rosignano Solvay-Castiglioncello peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 12UV 9Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Rosignano Solvay-Castiglioncello?

Rosignano Solvay-Castiglioncello sits at 43.4°N, 10.4°E, 13 m above sea level, in Italy. The nearest listed city is Cecina, 11 km away.

Topography around Rosignano Solvay-Castiglioncello

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosignano Solvay-Castiglioncello.

Within 3 km, the terrain around Rosignano Solvay-Castiglioncello has only modest variations in elevation — a maximum elevation change of 178 m around an average of 25 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 672 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,823 m.

The land around Rosignano Solvay-Castiglioncello is covered by water (37%) and trees (21%) within 3 km, water (45%) and trees (27%) within 16 km, and water (46%) and trees (35%) within 80 km.

3 km
178 m
16 km
672 m
80 km
1,823 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Cecina 11 km · Livorno 19 km · Cascina 33 km · Pontedera 34 km · Pisa 36 km · San Miniato 46 km · San Miniato Basso 47 km · Lucca 51 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 Rosignano Solvay-Castiglioncello (43.3895°, 10.4361°, elevation 13 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).