Bolzano weather in May

In May, Bolzano sees average daytime highs of 17°C and overnight lows near 8°C, with 108 mm of precipitation across 13.9 wet days and about 14.8 hours of daylight. It is the 5th-warmest and 3rd-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 23% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of May to 15 h 18 min by month's end. Set against the rest of the year, May is Bolzano's 12th-clearest and 1st-windiest month. For the whole year in context, see Bolzano's year-round climate.

Daytime high
17°
5th warmest
Overnight low
8th coldest
Precipitation
108 mm
13.9 wet days
Daylight
14 h 48 min
4:47 AM – 7:35 PM
Cloud cover
63%
12th clearest
Wind
4 km/h
1st windiest
Solar energy
5.58 kWh/m²
Travel score
5.0
out of 10

Bolzano is historic centre of the city of Bozen/Bolzano in South Tyrol.

Air quality
Moderate
PM2.5 14.8 µg/m³ · 2010

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 Bolzano reaches about 17°C in the afternoon and slips back to 8°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 22°C. Set against its neighbours, May runs about 4°C warmer than April and about 4°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1156
2156
3166
4166
5167
6167
7167
8167
9167
10167
11177
12177
13178
14178
15178
16178
17178
18188
19188
20188
21189
22189
23189
24189
25199
26199
27199
28199
29199
301910
311910

How May really feels in Bolzano

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.

Bolzano weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -7°528.17.18.80.0
Feb / -5°528.67.1100.2
Mar / -0°7210.35.111.62.0
Apr13° / 96132.713.33.3
May17° / 10813.90.214.85.0
Jun21° / 11°9111.9015.56.2
Jul23° / 13°8110.2015.26.9
Aug22° / 12°8511.10146.7
Sep18° / 9310.80.112.45.7
Oct14° / 12913.30.810.73.6
Nov / 12912.24.39.21.3
Dec / -5°719.16.38.50.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
33961
43961
53961
63961
74060
84060
94159
104258
114258
124357
134357
144357
154456
164456
174555
184555
194753
204753
214852
224852
234852
244852
254951
264951
274951
284951
294951
304951
314951

Chance of precipitation in May

Any precipitationSnow

Bolzano gets around 108 mm of rain and snow over 13.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 45% and peaks near 51% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1504
2503
3513
4513
5513
6502
7502
8502
9492
10481
11481
12471
13471
14461
15460
16450
17440
18440
19430
20420
21420
22410
23410
24410
25400
26400
27400
28410
29410
30410
31410

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
31991

Wind in May

Winds average 4 km/h in May, the windiest month of the year.

Across May, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 06 min at the start of May to 15 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over May. Sunrise moves from 5:09 AM to 4:33 AM, and sunset from 7:15 PM to 7:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:097:15
214.25:077:16
314.25:057:18
414.35:047:19
514.35:027:20
614.35:017:22
714.44:597:23
814.44:587:24
914.54:567:26
1014.54:557:27
1114.64:547:28
1214.64:527:30
1314.74:517:31
1414.74:507:32
1514.74:487:33
1614.84:477:35
1714.84:467:36
1814.94:457:37
1914.94:447:38
2014.94:437:39
2115.04:427:41
2215.04:417:42
2315.14:407:43
2415.14:397:44
2515.14:387:45
2615.24:377:46
2715.24:367:47
2815.24:357:48
2915.24:347:49
3015.34:347:50
3115.34:337:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.58 kWh/m².

For context, solar energy here swings from a low near 1.34 kWh/m² to a high of 5.92 kWh/m² in June across the year — May's 5.58 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.4Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.6Bright
175.6Bright
185.6Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in May

Is May a good time to visit Bolzano?

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

5.0
Sightseeing
5th-best month of the year
1.4
Beach & pool
5th-best month of the year

May is a reasonable time to visit Bolzano for sightseeing.

What to pack for Bolzano in May

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

In May, Bolzano sees daytime highs around 17°C and nights near 8°C. Pack rain gear. Worth having: a warm layer and sun protection. About 14 days see rain.

rain geara warm layersun protection

UV index in Bolzano in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bolzano 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 14UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5High
Apr7High
May8Very high
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Bolzano 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 Bolzano is worst in March — around 18 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Seasonal pattern from CAMS reanalysis, scaled to Bolzano's WHO annual average of 14.8 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 2318 µg/m³Sep 2211 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb15Moderate
Mar18Moderate
Apr18Moderate
May14Moderate
Jun17Moderate
Jul14Moderate
Aug13Moderate
Sep11Good
Oct12Good
Nov12Moderate
Dec15Moderate
Location & terrain

Where is Bolzano?

Bolzano sits at 46.5°N, 11.3°E, 262 m above sea level, in Italy. The nearest listed city is Eppan, 7.0 km away.

RoveretoRiva del GardaBellunoIgls

Topography around Bolzano

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

Within 3 km, the terrain around Bolzano has large variations in elevation — a maximum elevation change of 1,155 m around an average of 440 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,951 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,794 m.

The land around Bolzano is covered by trees (60%) and artificial surfaces (31%) within 3 km, trees (79%) within 16 km, and trees (56%) and grassland (26%) within 80 km.

3 km
1,155 m
16 km
1,951 m
80 km
3,794 m
treesgrasslandartificial surfacesbare terrainsnow and icewatermoss and lichen
May weather nearby: Eppan 7.0 km · Merano 24 km · Bressanone 35 km · Trento 50 km · Rovereto 71 km · Riva del Garda 77 km · Belluno 78 km · Igls 83 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 Bolzano (46.4907°, 11.3398°, elevation 262 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. 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).