Portofino weather in May

In May, Portofino sees average daytime highs of 18°C and overnight lows near 16°C, with 70 mm of rain across 9 wet days and about 14.5 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 19°C by the end. The sky is clear or mostly clear about 39% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of May to 15 hours by month's end. Set against the rest of the year, May is Portofino's 7th-clearest and 8th-windiest month. For the whole year in context, see Portofino's year-round climate.

Daytime high
18°
6th warmest
Overnight low
16°
7th coldest
Rainfall
70 mm
9 wet days
Daylight
14 h 36 min
5:02 AM – 7:37 PM
Cloud cover
51%
7th clearest
Wind
12 km/h
8th windiest
Solar energy
5.89 kWh/m²
Travel score
6.0
out of 10

Portofino is settlement in Liguria, 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 16°C in the first days to 19°C by the end.

A typical May day in Portofino reaches about 18°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 15°C and 20°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)
11614
21614
31614
41614
51614
61714
71715
81715
91715
101715
111715
121715
131715
141715
151816
161816
171816
181816
191816
201816
211816
221816
231916
241917
251917
261917
271917
281917
291917
301917
312017

Portofino 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
Jan11° / 12912.19.12.4
Feb11° / 10711.310.22.4
Mar12° / 10°10410.711.63.3
Apr14° / 12°9210.313.24.3
May18° / 16°70914.56.0
Jun21° / 19°46715.37.3
Jul24° / 22°254.1158.5
Aug24° / 22°406.113.88.1
Sep22° / 20°1028.712.37.0
Oct18° / 16°17912.910.85.7
Nov15° / 13°21414.69.43.9
Dec12° / 10°15814.18.72.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25446
35446
45347
55347
65248
75248
85248
95248
105248
115248
125446
135446
145446
155644
165743
175842
185941
196139
206238
216337
226535
236535
246634
256634
266535
276535
286535
296535
306535
316436

Chance of precipitation in May

Any precipitation

Portofino gets around 70 mm of rain over 9 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 29% and peaks near 34% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
134
234
334
434
533
633
733
833
932
1032
1132
1231
1331
1431
1530
1630
1729
1829
1928
2028
2127
2226
2326
2426
2525
2625
2725
2825
2925
3026
3126

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 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1811900
2792100
3772300
4752500
5732700
6712900
7683110
8653410
9643510
10623710
11603910
12584110
13554320
14544420
15524530
16504740
17484850
18464860
19444970
20424990
214049100
223850120
233651130
243550151
253349171
263149201
272949221
282748241
292547261
302446282
312246302

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 min at the start of May to 15 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over May. Sunrise moves from 5:22 AM to 4:49 AM, and sunset from 7:19 PM to 7:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:227:19
214.05:207:20
314.05:197:21
414.15:177:23
514.15:167:24
614.25:157:25
714.25:137:26
814.35:127:27
914.35:117:29
1014.35:097:30
1114.45:087:31
1214.45:077:32
1314.55:067:33
1414.55:047:34
1514.55:037:36
1614.65:027:37
1714.65:017:38
1814.65:007:39
1914.74:597:40
2014.74:587:41
2114.84:577:42
2214.84:567:43
2314.84:557:44
2414.94:547:45
2514.94:537:46
2614.94:537:47
2714.94:527:48
2815.04:517:49
2915.04:507:50
3015.04:507:51
3115.04:497:52

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.89 kWh/m².

For context, solar energy here swings from a low near 1.34 kWh/m² to a high of 6.57 kWh/m² in July across the year — May's 5.89 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.5Bright
55.5Bright
65.5Bright
75.6Bright
85.6Bright
95.6Bright
105.7Bright
115.7Bright
125.7Bright
135.8Bright
145.8Bright
155.8Bright
165.9Bright
175.9Bright
186.0Bright
196.0Bright
206.0Intense
216.1Intense
226.1Intense
236.1Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.3Intense
316.3Intense
Planning a trip in May

Hazard calendar for Portofino

In seasonPeak

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

Portofino'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 Portofino?

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

6.0
Sightseeing
5th-best month of the year
1.9
Beach & pool
6th-best month of the year

May is a reasonable time to visit Portofino for sightseeing.

What to pack for Portofino in May

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

In May, Portofino sees daytime highs around 18°C and nights near 16°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

Sea temperature near Portofino 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 13°C.

It's comfortable for a long swim from Jun 2 to Oct 20 — about 4.6 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct20Refreshing
Nov18Cool
Dec16Cool

UV index in Portofino 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 Portofino peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowJul 14UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr7Very high
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Portofino in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Portofino is worst in March — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodMar 2016 µg/m³Dec 1011 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb14Moderate
Mar16Moderate
Apr15Moderate
May14Moderate
Jun14Moderate
Jul12Good
Aug13Moderate
Sep12Good
Oct13Moderate
Nov11Good
Dec11Good
Location & terrain

Where is Portofino?

Portofino sits at 44.3°N, 9.2°E, 0 m above sea level, in Italy. The nearest listed city is Rapallo, 5.0 km away.

Topography around Portofino

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

Within 3 km, the terrain around Portofino has significant variations in elevation — a maximum elevation change of 506 m around an average of 46 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,220 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,979 m.

The land around Portofino is covered by water (76%) and trees (22%) within 3 km, water (63%) and trees (33%) within 16 km, and trees (53%) and water (31%) within 80 km.

3 km
506 m
16 km
1,220 m
80 km
1,979 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Rapallo 5.0 km · Chiavari 9.0 km · Sestri Levante 15 km · Genoa 24 km · Cinque Terre 47 km · La Spezia 54 km · Savona 58 km · Novi Ligure 61 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 Portofino (44.3035°, 9.2094°, elevation 0 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).