Melegnano weather in September

In September, Melegnano sees average daytime highs of 25°C and overnight lows near 16°C, with 89 mm of rain across 8.2 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 23°C by the end. The sky is clear or mostly clear about 48% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Melegnano's 3rd-clearest and 7th-windiest month. For the whole year in context, see Melegnano's year-round climate.

Daytime high
25°
4th warmest
Overnight low
16°
9th coldest
Rainfall
89 mm
8.2 wet days
Daylight
12 h 18 min
6:08 AM – 6:26 PM
Cloud cover
46%
3rd clearest
Wind
6 km/h
7th windiest
Solar energy
4.06 kWh/m²
Travel score
7.1
out of 10

Melegnano is chief town of the homonym municipality.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 28°C in the first days to 23°C by the end.

A typical September day in Melegnano reaches about 25°C in the afternoon and slips back to 16°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 29°C. Set against its neighbours, September runs about 5°C cooler than August and about 7°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12818
22818
32818
42818
52718
62718
72717
82717
92717
102617
112617
122617
132616
142616
152516
162516
172516
182516
192416
202415
212415
222415
232415
242315
252315
262315
272314
282314
292214
302214

How September really feels in Melegnano

Once humidity and wind are folded in, September 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

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

Melegnano weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 556.71.68.91.3
Feb10° / 526.51.210.12.6
Mar15° / 627.60.411.65.0
Apr19° / 10°8010.3013.26.1
May24° / 14°8610.2014.66.8
Jun28° / 18°709.2015.46.1
Jul31° / 21°517.6015.14.9
Aug30° / 20°708.4013.95.2
Sep25° / 16°898.2012.37.1
Oct19° / 11°979.6010.76.0
Nov12° / 11810.30.49.33.3
Dec / 687.71.68.61.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17030
27030
36931
46931
56931
66832
76832
86832
96733
106733
116733
126733
136634
146634
156535
166535
176337
186337
196337
206238
216238
226139
236139
246040
255842
265743
275743
285644
295446
305446

Chance of precipitation in September

Any precipitation

Melegnano gets around 89 mm of rain over 8.2 wet days in September. 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 31% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
127
227
327
426
526
626
726
826
927
1027
1127
1228
1328
1429
1529
1629
1730
1830
1930
2030
2130
2230
2330
2429
2529
2629
2730
2830
2930
3031

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 38% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
125263514
226273413
327283311
428283310
52929329
63030328
73130328
83130327
93230326
103330326
113430325
123429315
133529314
143629314
153729304
163828304
174028293
184128283
194229273
204329262
214429252
224430242
234530232
244631222
254632201
264633191
274734181
284735171
294736171
304836160

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over September. Sunrise moves from 5:49 AM to 6:25 AM, and sunset from 6:56 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:496:56
213.15:506:54
313.05:516:52
413.05:536:50
512.95:546:48
612.95:556:46
712.85:566:44
812.75:586:42
912.75:596:40
1012.66:006:38
1112.66:016:36
1212.56:036:34
1312.56:046:32
1412.46:056:30
1512.46:066:28
1612.36:086:26
1712.36:096:24
1812.26:106:22
1912.16:116:20
2012.16:136:18
2112.06:146:16
2212.06:156:14
2311.96:166:12
2411.96:186:10
2511.86:196:08
2611.86:206:06
2711.76:226:04
2811.76:236:02
2911.66:246:01
3011.66:255:59

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.06 kWh/m².

For context, solar energy here swings from a low near 1.2 kWh/m² to a high of 6.47 kWh/m² in July across the year — September's 4.06 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.2Bright
144.1Bright
154.1Bright
164.0Bright
174.0Moderate
183.9Moderate
193.8Moderate
203.8Moderate
213.7Moderate
223.7Moderate
233.6Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.4Moderate
283.3Moderate
293.3Moderate
303.2Moderate
Planning a trip in September

Is September a good time to visit Melegnano?

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

7.1
Sightseeing
1st-best month of the year
6.4
Beach & pool
4th-best month of the year

September is one of the better times to visit Melegnano for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Melegnano in September

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

In September, Melegnano sees daytime highs around 25°C and nights near 16°C. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

UV index in Melegnano in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Melegnano peaks around July 14 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 10 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 14UV 8Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr7High
May7High
Jun7Very high
Jul8Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Melegnano in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Melegnano 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 Melegnano?

Melegnano sits at 45.4°N, 9.3°E, 88 m above sea level, in Italy. The nearest listed city is San Giuliano Milanese, 5.0 km away.

Topography around Melegnano

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

Within 3 km, the terrain around Melegnano has only modest variations in elevation — a maximum elevation change of 37 m around an average of 89 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 99 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,435 m.

The land around Melegnano is covered by cropland (52%) and artificial surfaces (20%) within 3 km, cropland (55%) within 16 km, and cropland (41%) and trees (33%) within 80 km.

3 km
37 m
16 km
99 m
80 km
2,435 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: San Giuliano Milanese 5.0 km · San Donato Milanese 7.0 km · Rozzano 13 km · Lodi 15 km · Segrate 15 km · Milan 16 km · Pioltello 16 km · Brera 17 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 Melegnano (45.3578°, 9.3236°, elevation 88 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).