Livorno weather in September

In September, Livorno sees average daytime highs of 23°C and overnight lows near 20°C, with 103 mm of rain across 8.9 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 21°C by the end. The sky is clear or mostly clear about 58% of the time in September, and the air most often feels humid.

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 Livorno's 4th-clearest and 8th-windiest month. For the whole year in context, see Livorno's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
20°
10th coldest
Rainfall
103 mm
8.9 wet days
Daylight
12 h 18 min
6:04 AM – 6:22 PM
Cloud cover
38%
4th clearest
Wind
12 km/h
8th windiest
Solar energy
4.54 kWh/m²
Travel score
7.3
out of 10
Air quality
Moderate
PM2.5 10.7 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 21°C by the end.

A typical September day in Livorno reaches about 23°C in the afternoon and slips back to 20°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 25°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12522
22521
32521
42421
52421
62421
72421
82421
92421
102420
112420
122320
132320
142320
152320
162320
172320
182320
192319
202319
212219
222219
232219
242219
252219
262219
272218
282218
292118
302118

Livorno weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 729.80.19.12.9
Feb11° / 698.70.510.23.0
Mar13° / 10°638.10.111.63.9
Apr15° / 12°709.7013.24.9
May19° / 16°547.4014.56.7
Jun23° / 20°415.4015.28.0
Jul25° / 22°213.1014.98.6
Aug26° / 23°334.9013.88.1
Sep23° / 20°1038.9012.37.3
Oct19° / 16°13711.7010.86.1
Nov15° / 13°14513.809.54.3
Dec12° / 9812.20.28.83.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 58% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28416
38317
48317
58218
68119
78020
87921
97723
107723
117525
127426
137327
147228
157129
167030
176931
186832
196832
206832
216733
226733
236634
246634
256634
266535
276535
286436
296436
306337

Chance of precipitation in September

Any precipitation

Livorno gets around 103 mm of rain over 8.9 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 30% and peaks near 37% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
125
225
326
426
526
627
727
827
928
1028
1129
1229
1330
1430
1530
1631
1731
1832
1932
2032
2133
2233
2333
2433
2534
2634
2735
2835
2936
3037

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1615253619
2615263617
3716273515
4717283413
5818293412
6818303310
791931339
891931338
9101932337
10101932336
11111932335
12111932334
13121932334
14122032333
15132032323
16132133312
17142133302
18152233292
19162233281
20172333271
21172333251
22182334241
23192434221
24192535211
25202536190
26202636180
27202736160
28212737150
29222837130
30222937120

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2913light breeze
3013light breeze

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 5:47 AM to 6:21 AM, and sunset from 6:50 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:476:50
213.05:486:48
312.95:496:46
412.95:506:44
512.95:526:43
612.85:536:41
712.75:546:39
812.75:556:37
912.65:566:35
1012.65:576:33
1112.55:586:31
1212.56:006:29
1312.46:016:28
1412.46:026:26
1512.36:036:24
1612.36:046:22
1712.26:056:20
1812.26:076:18
1912.16:086:16
2012.16:096:14
2112.06:106:12
2212.06:116:10
2311.96:126:09
2411.96:146:07
2511.86:156:05
2611.86:166:03
2711.76:176:01
2811.76:185:59
2911.66:195:57
3011.66:215:55

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.54 kWh/m².

For context, solar energy here swings from a low near 1.46 kWh/m² to a high of 7.05 kWh/m² in July across the year — September's 4.54 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.1Bright
75.0Bright
85.0Bright
94.9Bright
104.8Bright
114.8Bright
124.7Bright
134.7Bright
144.6Bright
154.5Bright
164.5Bright
174.4Bright
184.4Bright
194.3Bright
204.2Bright
214.2Bright
224.1Bright
234.1Bright
244.0Bright
254.0Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.7Moderate
Planning a trip in September

Hazard calendar for Livorno

In seasonPeak

In September, Livorno sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Livorno's rainy season runs September–February, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Livorno?

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

7.3
Sightseeing
4th-best month of the year
5.6
Beach & pool
4th-best month of the year

September is one of the better times to visit Livorno for general sightseeing.

What to pack for Livorno in September

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

In September, Livorno sees daytime highs around 23°C and nights near 20°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Livorno 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 19 km away) is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 2 to Oct 20 — about 4.6 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct20Refreshing
Nov18Cool
Dec16Cool

UV index in Livorno 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 Livorno peaks around July 12 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 12UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Livorno?

Livorno sits at 43.5°N, 10.3°E, 3 m above sea level, in Italy. The nearest listed city is Pisa, 19 km away.

Topography around Livorno

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

Within 3 km, the terrain around Livorno has only modest variations in elevation — a maximum elevation change of 104 m around an average of 16 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 462 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,111 m.

The land around Livorno is covered by artificial surfaces (50%) within 3 km, water (48%) and trees (23%) within 16 km, and water (45%) and trees (39%) within 80 km.

3 km
104 m
16 km
462 m
80 km
2,111 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Pisa 19 km · Rosignano Solvay-Castiglioncello 19 km · Cascina 23 km · Pontedera 28 km · Cecina 31 km · Massarosa 36 km · Lucca 36 km · Viareggio 36 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 Livorno (43.5443°, 10.3262°, elevation 3 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).