Città di Castello weather in September

In September, Città di Castello sees average daytime highs of 23°C and overnight lows near 13°C, with 85 mm of rain across 10.5 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 20°C by the end. The sky is clear or mostly clear about 44% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Città di Castello's 4th-clearest and 9th-windiest month. For the whole year in context, see Città di Castello's year-round climate.

Daytime high
23°
4th warmest
Overnight low
13°
9th coldest
Rainfall
85 mm
10.5 wet days
Daylight
12 h 18 min
5:57 AM – 6:14 PM
Cloud cover
47%
4th clearest
Wind
8 km/h
9th windiest
Solar energy
4.33 kWh/m²
Travel score
6.8
out of 10

Città di Castello is chief town of the homonym municipality.

Air quality
Elevated
PM2.5 18.5 µg/m³ · 2019

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 25°C in the first days to 20°C by the end.

A typical September day in Città di Castello 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 18°C and 27°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12515
22515
32515
42514
52514
62414
72414
82414
92414
102414
112314
122313
132313
142313
152313
162313
172213
182213
192213
202213
212212
222112
232112
242112
252112
262112
272112
282012
292011
302011

How September really feels in Città di Castello

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.

Città di Castello weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 649.72.99.10.8
Feb / 749.82.810.21.5
Mar12° / 7810.51.711.63.2
Apr16° / 8813.10.313.24.5
May20° / 11°7211.5014.56.2
Jun25° / 14°589015.27.2
Jul28° / 17°387014.97.2
Aug28° / 17°447.6013.87.0
Sep23° / 13°8510.5012.36.8
Oct17° / 9811.5010.85.5
Nov12° / 10812.10.99.52.9
Dec / 9011.42.38.81.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27624
37624
47426
57426
67327
77228
87129
97030
106931
116832
126733
136634
146535
156436
166436
176337
186238
196139
206139
216139
226139
236139
246139
256139
266139
276139
286040
296040
305941

Chance of precipitation in September

Any precipitation

Città di Castello gets around 85 mm of rain over 10.5 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 35% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
132
232
333
433
533
634
734
834
935
1035
1136
1236
1336
1437
1537
1637
1737
1837
1938
2037
2137
2237
2336
2436
2535
2635
2735
2835
2935
3035

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 51% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13442231
23642211
33842191
43942181
54142171
64242151
74342151
84441141
94441141
104541141
114540140
124640140
134739140
144738140
154837140
164936140
175135140
185234140
195333140
205532130
215631130
225830120
235929120
246029110
256228100
26632890
27652780
28662770
29662770
30682660

Wind in September

Winds average 8 km/h in September.

Across September, 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.

051015151015202530
Wind speed (km/h)Feels
17calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours 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 84 minutes over September. Sunrise moves from 5:39 AM to 6:13 AM, and sunset from 6:42 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:396:42
213.05:416:40
312.95:426:39
412.95:436:37
512.85:446:35
612.85:456:33
712.75:466:31
812.75:476:29
912.65:496:27
1012.65:506:26
1112.55:516:24
1212.55:526:22
1312.45:536:20
1412.45:546:18
1512.35:556:16
1612.35:576:14
1712.25:586:12
1812.25:596:10
1912.16:006:08
2012.16:016:07
2112.06:026:05
2212.06:046:03
2311.96:056:01
2411.96:065:59
2511.86:075:57
2611.86:085:55
2711.76:095:53
2811.76:115:51
2911.66:125:50
3011.66:135:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.33 kWh/m².

For context, solar energy here swings from a low near 1.36 kWh/m² to a high of 6.87 kWh/m² in July across the year — September's 4.33 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
45.0Bright
54.9Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.2Bright
184.2Bright
194.1Bright
204.1Bright
214.0Bright
224.0Moderate
233.9Moderate
243.9Moderate
253.8Moderate
263.8Moderate
273.7Moderate
283.7Moderate
293.6Moderate
303.6Moderate
Planning a trip in September

Is September a good time to visit Città di Castello?

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

6.8
Sightseeing
4th-best month of the year
5.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Città di Castello for sightseeing.

What to pack for Città di Castello in September

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

In September, Città di Castello sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes and rain gear. About 11 days see rain.

light clothesrain gear

UV index in Città di Castello 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 Città di Castello peaks around July 15 at about 9 (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 15UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5High
Apr7High
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Città di Castello 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 Città di Castello is worst in March — around 23 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Seasonal pattern from CAMS reanalysis, scaled to Città di Castello's WHO annual average of 18.5 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2023 µg/m³Nov 1816 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb20Moderate
Mar23Moderate
Apr22Moderate
May20Moderate
Jun19Moderate
Jul16Moderate
Aug17Moderate
Sep16Moderate
Oct17Moderate
Nov16Moderate
Dec17Moderate
Location & terrain

Where is Città di Castello?

Città di Castello sits at 43.5°N, 12.2°E, 288 m above sea level, in Italy. The nearest listed city is Arezzo, 29 km away.

Topography around Città di Castello

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

Within 3 km, the terrain around Città di Castello has significant variations in elevation — a maximum elevation change of 386 m around an average of 337 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 955 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,687 m.

The land around Città di Castello is covered by trees (39%) and cropland (28%) within 3 km, trees (69%) within 16 km, and trees (61%) and cropland (21%) within 80 km.

3 km
386 m
16 km
955 m
80 km
1,687 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Arezzo 29 km · Perugia 41 km · Bastia umbra 51 km · Montevarchi 54 km · Assisi 54 km · San Marino 55 km · Fabriano 56 km · San Giovanni Valdarno 58 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 Città di Castello (43.4656°, 12.2375°, elevation 288 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).