Empoli weather in September

In September, Empoli sees average daytime highs of 25°C and overnight lows near 15°C, with 87 mm of rain across 8.6 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 22°C by the end. The sky is clear or mostly clear about 49% 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 Empoli's 4th-clearest and 9th-windiest month. For the whole year in context, see Empoli's year-round climate.

Daytime high
25°
4th warmest
Overnight low
15°
9th coldest
Rainfall
87 mm
8.6 wet days
Daylight
12 h 18 min
6:02 AM – 6:19 PM
Cloud cover
44%
4th clearest
Wind
7 km/h
9th windiest
Solar energy
4.27 kWh/m²
Travel score
7.2
out of 10

Empoli is chief town of the homonym municipality.

Air quality
Moderate
PM10 34 µg/m³ · 2010

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 27°C in the first days to 22°C by the end.

A typical September day in Empoli reaches about 25°C in the afternoon and slips back to 15°C overnight — a 10°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 6°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12816
22716
32716
42716
52716
62716
72616
82615
92615
102615
112615
122615
132515
142515
152515
162514
172514
182414
192414
202414
212414
222414
232314
242313
252313
262313
272313
282213
292213
302213

How September really feels in Empoli

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.

Empoli weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6591.19.11.9
Feb11° / 728.91.310.22.6
Mar14° / 709.20.611.64.3
Apr18° / 78110.113.25.5
May22° / 12°689.1014.56.9
Jun26° / 16°436.4015.27.4
Jul29° / 18°294.2014.96.5
Aug29° / 18°335013.86.4
Sep25° / 15°878.6012.37.2
Oct19° / 11°12111.6010.86.0
Nov14° / 12912.30.39.53.7
Dec10° / 93110.78.82.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18020
27921
37921
47822
57822
67723
77624
87525
97426
107228
117129
127030
136931
146733
156634
166535
176436
186436
196337
206337
216139
226139
236139
246040
256040
266040
275941
285842
295842
305743

Chance of precipitation in September

Any precipitation

Empoli gets around 87 mm of rain over 8.6 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 30% and peaks near 34% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
123
223
323
424
524
625
726
826
927
1028
1128
1229
1330
1430
1531
1632
1732
1832
1932
2033
2132
2232
2332
2432
2533
2633
2733
2834
2934
3034

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 35% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
120273716
222273614
323283613
425293511
526303410
62731348
72831337
82932337
92933326
103033325
113034315
123134314
133134304
143235304
153335294
163335284
173435274
183635263
193735253
203834243
214034233
224133233
234233223
244333213
254433203
264533202
274633192
284733182
294833182
304932172

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 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
17calm
27calm
37calm
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 5:44 AM to 6:18 AM, and sunset from 6:48 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:446:48
213.05:456:46
313.05:476:44
412.95:486:42
512.95:496:40
612.85:506:38
712.85:516:36
812.75:526:35
912.75:546:33
1012.65:556:31
1112.65:566:29
1212.55:576:27
1312.45:586:25
1412.45:596:23
1512.36:006:21
1612.36:026:19
1712.26:036:17
1812.26:046:16
1912.16:056:14
2012.16:066:12
2112.06:086:10
2212.06:096:08
2311.96:106:06
2411.96:116:04
2511.86:126:02
2611.86:136:00
2711.76:155:58
2811.76:165:57
2911.66:175:55
3011.66:185:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.27 kWh/m².

For context, solar energy here swings from a low near 1.35 kWh/m² to a high of 6.78 kWh/m² in July across the year — September's 4.27 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.7Bright
94.6Bright
104.6Bright
114.5Bright
124.4Bright
134.4Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.1Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.8Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.4Moderate
Planning a trip in September

Is September a good time to visit Empoli?

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

7.2
Sightseeing
2nd-best month of the year
6.3
Beach & pool
4th-best month of the year

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

What to pack for Empoli in September

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

In September, Empoli sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

Sea temperature near Empoli in September

The nearest coast averages about 23°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 60 km away) is warmest in August at about 25°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 3 to Oct 22 — about 4.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov18Cool
Dec16Cool

UV index in Empoli 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 Empoli peaks around July 13 at about 9 (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 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Empoli 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 Empoli is worst in March — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 2016 µg/m³Nov 1712 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar17Moderate
Apr16Moderate
May15Moderate
Jun14Moderate
Jul12Good
Aug13Moderate
Sep12Moderate
Oct13Moderate
Nov12Good
Dec12Moderate
Location & terrain

Where is Empoli?

Empoli sits at 43.7°N, 10.9°E, 28 m above sea level, in Italy. The nearest listed city is San Miniato, 9.0 km away.

Topography around Empoli

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

Within 3 km, the terrain around Empoli has only modest variations in elevation — a maximum elevation change of 115 m around an average of 36 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 627 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,129 m.

The land around Empoli is covered by trees (31%), artificial surfaces (23%) and cropland (22%) within 3 km, trees (55%) within 16 km, and trees (65%) within 80 km.

3 km
115 m
16 km
627 m
80 km
2,129 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: San Miniato 9.0 km · San Miniato Basso 9.0 km · Campi Bisenzio 19 km · Scandicci 20 km · Prato 22 km · Montecatini-Terme 23 km · Pistoia 24 km · Sesto Fiorentino 24 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 Empoli (43.718°, 10.9476°, elevation 28 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).