San Lazzaro weather in April

In April, San Lazzaro sees average daytime highs of 19°C and overnight lows near 9°C, with 72 mm of precipitation across 10.1 wet days and about 13.2 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 21°C by the end. The sky is clear or mostly clear about 38% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of April to 13 h 54 min by month's end. Set against the rest of the year, April is San Lazzaro's 8th-clearest and 1st-windiest month. For the whole year in context, see San Lazzaro's year-round climate.

Daytime high
19°
7th warmest
Overnight low
6th coldest
Precipitation
72 mm
10.1 wet days
Daylight
13 h 12 min
5:38 AM – 6:52 PM
Cloud cover
54%
8th clearest
Wind
9 km/h
1st windiest
Solar energy
5.04 kWh/m²
Travel score
6.1
out of 10

San Lazzaro is chief town of the homonym municipality.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 17°C in the first days to 21°C by the end.

A typical April day in San Lazzaro reaches about 19°C in the afternoon and slips back to 9°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 24°C. Set against its neighbours, April runs about 4°C warmer than March and about 5°C cooler than May.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1177
2177
3178
4178
5178
6178
7188
8188
9188
10188
11188
12188
13189
14189
15199
16199
17199
18199
19199
201910
212010
222010
232010
242010
252011
262011
272111
282111
292111
302112

How April really feels in San Lazzaro

Once humidity and wind are folded in, April 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

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

San Lazzaro weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 427.21.691.6
Feb10° / 617.71.710.12.6
Mar15° / 598.10.611.64.8
Apr19° / 7210.10.113.26.1
May24° / 14°709.4014.67.0
Jun29° / 18°588015.36.1
Jul31° / 20°497.10154.8
Aug31° / 20°557.9013.95.1
Sep26° / 16°668.1012.37.1
Oct20° / 12°728.9010.76.4
Nov14° / 83100.49.43.9
Dec / 638.51.28.71.8

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25446
35545
45545
55545
65545
75644
85644
95644
105644
115644
125743
135743
145644
155743
165743
175743
185545
195545
205545
215446
225248
235248
245149
255149
265149
275149
285050
295050
304951

Chance of precipitation in April

Any precipitation

San Lazzaro gets around 72 mm of rain and snow over 10.1 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 34% and peaks near 35% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)
131
231
331
432
532
632
733
833
933
1034
1134
1234
1334
1434
1534
1634
1734
1834
1934
2034
2134
2234
2334
2434
2534
2634
2735
2835
2935
3035

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the dry band about 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
110000
210000
310000
410000
510000
610000
710000
810000
910000
1010000
1110000
1210000
1310000
1410000
1510000
169910
179910
189910
199820
209730
219730
229640
239550
249460
259370
269280
2790100
2888111
2987121
3086131

Wind in April

Winds average 9 km/h in April, the windiest month of the year.

Across April, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 30 min at the start of April to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over April. Sunrise moves from 6:05 AM to 5:14 AM, and sunset from 6:33 PM to 7:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:056:33
212.56:036:34
312.66:016:35
412.66:006:37
512.75:586:38
612.75:566:39
712.85:546:40
812.85:526:42
912.95:506:43
1012.95:486:44
1113.05:476:45
1213.05:456:47
1313.15:436:48
1413.15:416:49
1513.25:396:50
1613.25:386:52
1713.35:366:53
1813.35:346:54
1913.45:326:55
2013.45:316:57
2113.55:296:58
2213.55:276:59
2313.65:257:00
2413.65:247:02
2513.75:227:03
2613.75:217:04
2713.85:197:05
2813.85:177:07
2913.95:167:08
3013.95:147:09

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.04 kWh/m².

For context, solar energy here swings from a low near 1.27 kWh/m² to a high of 6.71 kWh/m² in July across the year — April's 5.04 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.6Bright
34.6Bright
44.6Bright
54.7Bright
64.7Bright
74.8Bright
84.8Bright
94.8Bright
104.9Bright
114.9Bright
125.0Bright
135.0Bright
145.0Bright
155.1Bright
165.1Bright
175.2Bright
185.2Bright
195.2Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.5Bright
Planning a trip in April

Is April a good time to visit San Lazzaro?

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

6.1
Sightseeing
4th-best month of the year
2.5
Beach & pool
7th-best month of the year

April is a reasonable time to visit San Lazzaro for sightseeing.

What to pack for San Lazzaro in April

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

In April, San Lazzaro sees daytime highs around 19°C and nights near 9°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

UV index in San Lazzaro in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Lazzaro peaks around July 14 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar5Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in San Lazzaro in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in San Lazzaro 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 San Lazzaro?

San Lazzaro sits at 44.5°N, 11.4°E, 66 m above sea level, in Italy. The nearest listed city is Bologna, 6.0 km away.

Topography around San Lazzaro

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

Within 3 km, the terrain around San Lazzaro has only modest variations in elevation — a maximum elevation change of 170 m around an average of 72 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 599 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,113 m.

The land around San Lazzaro is covered by trees (33%), artificial surfaces (30%) and cropland (25%) within 3 km, cropland (39%) and trees (31%) within 16 km, and cropland (38%) and trees (36%) within 80 km.

3 km
170 m
16 km
599 m
80 km
2,113 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Bologna 6.0 km · Casalecchio di Reno 11 km · Castel Maggiore 12 km · Zola Predosa 15 km · San Giovanni in Persiceto 26 km · Imola 27 km · Cento 31 km · Vignola 32 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 San Lazzaro (44.4705°, 11.4085°, elevation 66 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).