Prato weather in September

In September, Prato sees average daytime highs of 22°C and overnight lows near 13°C, with 81 mm of rain across 9.9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 24°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 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 Prato's 4th-clearest and 9th-windiest month. For the whole year in context, see Prato's year-round climate.

Daytime high
22°
4th warmest
Overnight low
13°
9th coldest
Rainfall
81 mm
9.9 wet days
Daylight
12 h 18 min
6:01 AM – 6:19 PM
Cloud cover
47%
4th clearest
Wind
7 km/h
9th windiest
Solar energy
4.23 kWh/m²
Travel score
6.8
out of 10
Air quality
Elevated
PM2.5 15.5 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 24°C in the first days to 20°C by the end.

A typical September day in Prato reaches about 22°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°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
22415
32415
42415
52415
62414
72414
82314
92314
102314
112314
122314
132314
142214
152213
162213
172213
182213
192113
202113
212113
222113
232112
242112
252012
262012
272012
282012
292012
301912

How September really feels in Prato

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.

Prato weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 779.32.59.10.7
Feb / 839.1310.21.3
Mar12° / 8410.21.711.63.1
Apr15° / 9712.70.513.24.3
May19° / 11°7912014.56.0
Jun24° / 14°609.4015.27.1
Jul27° / 17°427.9014.97.4
Aug27° / 17°398.2013.87.3
Sep22° / 13°819.9012.36.8
Oct17° / 10°12311.9010.85.1
Nov11° / 13812.819.52.6
Dec / 108112.28.81.0

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 21% of September, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27624
37525
47426
57426
67327
77228
87228
97129
107030
116832
126733
136733
146634
156535
166436
176337
186337
196238
206139
216139
226139
235941
245941
255842
265743
275743
285545
295545
305347

Chance of precipitation in September

Any precipitation

Prato gets around 81 mm of rain over 9.9 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 34% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
131
232
332
432
532
632
732
832
933
1033
1133
1233
1334
1434
1534
1634
1735
1835
1935
2035
2135
2235
2334
2434
2534
2634
2735
2835
2936
3036

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 47% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12837324
22938303
33138283
43339262
53440242
63541222
73641211
83742201
93842191
103942181
114041171
124141171
134240171
144439161
154538161
164737161
174836151
185035151
195233141
205332141
215532130
225731120
235830120
246029110
256129100
26622990
27632890
28642880
29652870
30652870

Wind in September

Winds average 7 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
26calm
36calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:43 AM to 6:18 AM, and sunset from 6:47 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:436:47
213.05:456:45
313.05:466:43
412.95:476:42
512.95:486:40
612.85:496:38
712.85:506:36
812.75:526:34
912.75:536:32
1012.65:546:30
1112.65:556:28
1212.55:566:27
1312.55:576:25
1412.45:596:23
1512.36:006:21
1612.36:016:19
1712.26:026:17
1812.26:036:15
1912.16:056:13
2012.16:066:11
2112.06:076:09
2212.06:086:07
2311.96:096:05
2411.96:106:04
2511.86:126:02
2611.86:136:00
2711.76:145:58
2811.76:155:56
2911.66:165:54
3011.66:185:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.23 kWh/m².

For context, solar energy here swings from a low near 1.31 kWh/m² to a high of 6.71 kWh/m² in July across the year — September's 4.23 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.4Bright
134.3Bright
144.3Bright
154.2Bright
164.2Bright
174.1Bright
184.0Bright
194.0Bright
203.9Moderate
213.9Moderate
223.8Moderate
233.8Moderate
243.7Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.4Moderate
303.4Moderate
Planning a trip in September

Is September a good time to visit Prato?

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
4.7
Beach & pool
4th-best month of the year

September is a reasonable time to visit Prato for sightseeing.

What to pack for Prato in September

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

In September, Prato sees daytime highs around 22°C and nights near 13°C. Worth packing: light clothes and rain gear. About 10 days see rain.

light clothesrain gear

UV index in Prato 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 Prato peaks around July 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 13UV 9Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

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

Seasonal pattern from CAMS reanalysis, scaled to Prato's WHO annual average of 15.5 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1918 µg/m³Sep 1213 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb16Moderate
Mar19Moderate
Apr17Moderate
May16Moderate
Jun15Moderate
Jul13Moderate
Aug14Moderate
Sep13Moderate
Oct15Moderate
Nov14Moderate
Dec16Moderate
Location & terrain

Where is Prato?

Prato sits at 43.9°N, 11.1°E, 61 m above sea level, in Italy. The nearest listed city is Campi Bisenzio, 7.0 km away.

Topography around Prato

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

Within 3 km, the terrain around Prato has significant variations in elevation — a maximum elevation change of 480 m around an average of 95 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,202 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,129 m.

The land around Prato is covered by artificial surfaces (50%) and trees (35%) within 3 km, trees (65%) within 16 km, and trees (68%) within 80 km.

3 km
480 m
16 km
1,202 m
80 km
2,129 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Campi Bisenzio 7.0 km · Fornacelle 7.0 km · Montemurlo 7.0 km · Sesto Fiorentino 10 km · Pistoia 15 km · Scandicci 16 km · Florence 16 km · Campo di Marte 18 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 Prato (43.8805°, 11.097°, 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).