Casalecchio di Reno weather in May

In May, Casalecchio di Reno sees average daytime highs of 23°C and overnight lows near 13°C, with 76 mm of rain across 9.5 wet days and about 14.6 hours of daylight. It is the 5th-warmest and 2nd-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 37% 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 Casalecchio di Reno's 7th-clearest and 3rd-windiest month. For the whole year in context, see Casalecchio di Reno's year-round climate.

Daytime high
23°
5th warmest
Overnight low
13°
8th coldest
Rainfall
76 mm
9.5 wet days
Daylight
14 h 36 min
4:53 AM – 7:29 PM
Cloud cover
53%
7th clearest
Wind
7 km/h
3rd windiest
Solar energy
5.98 kWh/m²
Travel score
6.9
out of 10

Casalecchio di Reno 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 Casalecchio di Reno reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°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)
12111
22112
32112
42112
52212
62212
72212
82212
92213
102213
112313
122313
132313
142313
152313
162313
172314
182414
192414
202414
212414
222414
232414
242514
252515
262515
272515
282515
292515
302615
312616

How May really feels in Casalecchio di Reno

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.

Casalecchio di Reno weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 457.4291.4
Feb10° / 647.52.110.12.4
Mar15° / 638.1111.64.7
Apr18° / 7610.20.213.25.9
May23° / 13°769.5014.66.9
Jun28° / 18°607.8015.36.4
Jul31° / 20°466.30155.2
Aug30° / 20°537.7013.95.3
Sep25° / 16°688012.37.2
Oct19° / 11°768.8010.76.3
Nov13° / 91100.59.43.6
Dec / 698.71.68.71.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% 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 (%)
14852
24852
34753
44753
54852
64951
74951
85050
95050
105149
115149
125149
135149
145347
155347
165446
175545
185644
195644
205842
215842
225941
235941
246040
256040
266139
276040
286040
296040
306040
315941

Chance of precipitation in May

Any precipitation

Casalecchio di Reno gets around 76 mm of rain over 9.5 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 31% and peaks near 37% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
436
536
635
735
834
934
1033
1133
1232
1332
1431
1531
1630
1730
1829
1929
2029
2128
2228
2328
2428
2528
2628
2728
2828
2928
3028
3128

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 70% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1851410
2841510
3821710
4811810
5801910
6792010
7772120
8762220
9762220
10752320
11752320
12742420
13742420
14732520
15732520
16722620
17712630
18712630
19702730
20702730
21682840
22672841
23662941
24643051
25633061
26613171
27593281
28573391
295633101
305334121
315134141

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
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
207calm
217calm
227calm
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 5:13 AM to 4:40 AM, and sunset from 7:11 PM to 7:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:137:11
214.05:127:12
314.15:107:13
414.15:097:15
514.15:077:16
614.25:067:17
714.25:057:18
814.35:037:20
914.35:027:21
1014.45:017:22
1114.44:597:23
1214.44:587:24
1314.54:577:25
1414.54:567:27
1514.64:557:28
1614.64:537:29
1714.64:527:30
1814.74:517:31
1914.74:507:32
2014.74:497:33
2114.84:487:34
2214.84:477:35
2314.84:467:37
2414.94:457:38
2514.94:457:39
2614.94:447:40
2715.04:437:41
2815.04:427:42
2915.04:427:42
3015.04:417:43
3115.14:407:44

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.98 kWh/m².

For context, solar energy here swings from a low near 1.27 kWh/m² to a high of 6.68 kWh/m² in July across the year — May's 5.98 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.5Bright
65.6Bright
75.6Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.9Bright
145.9Bright
155.9Bright
166.0Bright
176.0Intense
186.0Intense
196.1Intense
206.1Intense
216.2Intense
226.2Intense
236.2Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.4Intense
306.4Intense
316.4Intense
Planning a trip in May

Is May a good time to visit Casalecchio di Reno?

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

6.9
Sightseeing
2nd-best month of the year
5.5
Beach & pool
5th-best month of the year

May is a reasonable time to visit Casalecchio di Reno for sightseeing.

What to pack for Casalecchio di Reno in May

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

In May, Casalecchio di Reno sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Casalecchio di Reno 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 Casalecchio di Reno peaks around July 13 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 13UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Casalecchio di Reno 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 Casalecchio di Reno is worst in March — around 19 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1919 µg/m³Sep 1213 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb17Moderate
Mar19Moderate
Apr18Moderate
May16Moderate
Jun16Moderate
Jul14Moderate
Aug14Moderate
Sep13Moderate
Oct15Moderate
Nov14Moderate
Dec16Moderate
Location & terrain

Where is Casalecchio di Reno?

Casalecchio di Reno sits at 44.5°N, 11.3°E, 61 m above sea level, in Italy. The nearest listed city is Zola Predosa, 5.0 km away.

Topography around Casalecchio di Reno

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

Within 3 km, the terrain around Casalecchio di Reno has significant variations in elevation — a maximum elevation change of 281 m around an average of 115 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 761 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,113 m.

The land around Casalecchio di Reno is covered by trees (44%), artificial surfaces (23%) and grassland (20%) within 3 km, trees (39%), cropland (28%) and grassland (20%) within 16 km, and trees (39%) and cropland (37%) within 80 km.

3 km
281 m
16 km
761 m
80 km
2,113 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Zola Predosa 5.0 km · Bologna 5.0 km · San Lazzaro 11 km · Castel Maggiore 13 km · San Giovanni in Persiceto 19 km · Vignola 21 km · Castelfranco Emilia 22 km · Cento 28 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 Casalecchio di Reno (44.4756°, 11.275°, elevation 61 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).