Tortona weather in May

In May, Tortona sees average daytime highs of 23°C and overnight lows near 14°C, with 66 mm of rain across 8.6 wet days and about 14.6 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 25°C by the end. The sky is clear or mostly clear about 34% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 hours at the start of May to 15 h 06 min by month's end. Set against the rest of the year, May is Tortona's 8th-clearest and 2nd-windiest month. For the whole year in context, see Tortona's year-round climate.

Daytime high
23°
5th warmest
Overnight low
14°
8th coldest
Rainfall
66 mm
8.6 wet days
Daylight
14 h 36 min
5:02 AM – 7:40 PM
Cloud cover
54%
8th clearest
Wind
7 km/h
2nd windiest
Solar energy
5.72 kWh/m²
Travel score
7.0
out of 10

Tortona 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 21°C in the first days to 25°C by the end.

A typical May day in Tortona reaches about 23°C in the afternoon and slips back to 14°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12112
22112
32112
42112
52112
62113
72213
82213
92213
102213
112213
122213
132313
142314
152314
162314
172314
182314
192414
202414
212414
222415
232415
242515
252515
262515
272515
282516
292516
302616
312616

How May really feels in Tortona

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Tortona weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 567.12.791.3
Feb10° / 536.31.610.12.6
Mar15° / 587.20.611.65.0
Apr19° / 7190.113.26.2
May23° / 14°668.6014.67.0
Jun28° / 18°476.8015.36.5
Jul31° / 20°345015.15.2
Aug30° / 20°436.4013.95.4
Sep25° / 16°737.4012.37.2
Oct19° / 11°929.3010.76.0
Nov12° / 11310.10.49.43.3
Dec / 6782.48.71.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% 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 46%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34753
44753
54753
64753
74753
84852
95050
105050
115050
125149
135149
145248
155248
165347
175545
185545
195644
205842
215842
225941
235941
246040
256040
266040
276040
286040
296040
306040
316040

Chance of precipitation in May

Any precipitation

Tortona gets around 66 mm of rain over 8.6 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 28% and peaks near 33% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
133
233
333
433
533
633
733
832
931
1031
1130
1230
1330
1429
1529
1628
1728
1827
1927
2026
2126
2225
2324
2424
2524
2623
2723
2823
2923
3024
3124

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 67% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1851410
2831610
3821710
4801910
5792010
6782110
7762310
8752410
9742510
10732610
11712720
12712720
13702820
14692920
15683020
16683020
17663130
18663130
19653140
20643240
21633250
22623350
23613360
24593470
25583480
26563590
275436100
285137120
294937130
304738140
314539161

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 hours at the start of May to 15 h 06 min 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 4:48 AM, and sunset from 7:21 PM to 7:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:227:21
214.05:207:23
314.15:197:24
414.15:187:25
514.25:167:26
614.25:157:28
714.35:137:29
814.35:127:30
914.35:117:31
1014.45:097:33
1114.45:087:34
1214.55:077:35
1314.55:057:36
1414.65:047:37
1514.65:037:39
1614.65:027:40
1714.75:017:41
1814.75:007:42
1914.74:597:43
2014.84:587:44
2114.84:577:45
2214.84:567:46
2314.94:557:48
2414.94:547:49
2514.94:537:50
2615.04:527:51
2715.04:517:52
2815.04:517:53
2915.14:507:54
3015.14:497:54
3115.14:487:55

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.72 kWh/m².

For context, solar energy here swings from a low near 1.21 kWh/m² to a high of 6.47 kWh/m² in July across the year — May's 5.72 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.2Bright
45.2Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.5Bright
115.5Bright
125.5Bright
135.6Bright
145.6Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.9Bright
215.9Bright
226.0Bright
236.0Bright
246.0Intense
256.0Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in May

Is May a good time to visit Tortona?

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

7.0
Sightseeing
2nd-best month of the year
5.5
Beach & pool
5th-best month of the year

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

What to pack for Tortona in May

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

In May, Tortona sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Tortona 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 58 km away) is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 3 to Oct 19 — 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 Tortona 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 Tortona peaks around July 14 at about 8 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 14UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Tortona 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 Tortona is worst in January — around 26 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJan 1726 µg/m³Aug 1617 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb23Moderate
Mar26Moderate
Apr23Moderate
May20Moderate
Jun21Moderate
Jul18Moderate
Aug17Moderate
Sep18Moderate
Oct20Moderate
Nov20Moderate
Dec22Moderate
Location & terrain

Where is Tortona?

Tortona sits at 44.9°N, 8.9°E, 122 m above sea level, in Italy. The nearest listed city is Voghera, 16 km away.

Topography around Tortona

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

Within 3 km, the terrain around Tortona has only modest variations in elevation — a maximum elevation change of 162 m around an average of 130 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 597 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,776 m.

The land around Tortona is covered by cropland (42%) and artificial surfaces (22%) within 3 km, cropland (59%) within 16 km, and trees (41%) and cropland (34%) within 80 km.

3 km
162 m
16 km
597 m
80 km
1,776 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Voghera 16 km · Novi Ligure 16 km · Alessandria 20 km · Valenza 21 km · Acqui Terme 40 km · Pavia 40 km · Casale Monferrato 42 km · Vigevano 46 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 Tortona (44.8978°, 8.8637°, elevation 122 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).