Sestri Levante weather in September

In September, Sestri Levante sees average daytime highs of 21°C and overnight lows near 18°C, with 116 mm of rain across 9.2 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 20°C by the end. The sky is clear or mostly clear about 52% of the time in September, and the air most often feels humid.

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 Sestri Levante's 3rd-clearest and 8th-windiest month. For the whole year in context, see Sestri Levante's year-round climate.

Daytime high
21°
3rd warmest
Overnight low
18°
9th coldest
Rainfall
116 mm
9.2 wet days
Daylight
12 h 18 min
6:08 AM – 6:26 PM
Cloud cover
42%
3rd clearest
Wind
10 km/h
8th windiest
Solar energy
4.25 kWh/m²
Travel score
6.9
out of 10

Sestri Levante 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 23°C in the first days to 20°C by the end.

A typical September day in Sestri Levante reaches about 21°C in the afternoon and slips back to 18°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 24°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12320
22319
32319
42319
52319
62219
72219
82219
92219
102218
112218
122218
132218
142118
152118
162118
172118
182117
192117
202117
212117
222017
232017
242017
252017
262017
272016
282016
291916
301916

Sestri Levante weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 13012.60.59.11.9
Feb10° / 11010.51.110.22.1
Mar12° / 10710.70.311.63.1
Apr14° / 11°10211.4013.24.0
May18° / 14°799.9014.55.8
Jun21° / 18°588.2015.37.1
Jul24° / 20°335.20158.3
Aug24° / 21°476.6013.88.0
Sep21° / 18°1169.2012.36.9
Oct17° / 14°19713.4010.85.3
Nov13° / 11°20614.70.19.43.4
Dec11° / 15713.90.58.72.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 31%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27624
37624
47624
57624
67525
77525
87525
97426
107327
117228
127228
137129
147030
157030
166931
176832
186832
196733
206634
216634
226535
236535
246436
256337
266337
276139
286040
296040
305941

Chance of precipitation in September

Any precipitation

Sestri Levante gets around 116 mm of rain over 9.2 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 32% and peaks near 42% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
126
226
326
426
526
626
726
827
927
1028
1128
1229
1330
1430
1531
1632
1732
1833
1934
2034
2135
2236
2336
2437
2538
2639
2740
2841
2941
3042

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 38% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1112142261
2122242231
3122442211
4132543191
5142643170
6142743150
7152844130
8152844120
9162944110
10172945100
1118294590
1218294580
1319294470
1420294470
1521304360
1622304260
1723314160
1824314050
1925323850
2027323740
2128333540
2229343440
2330353230
2430363130
2531373030
2632372820
2733382720
2834382620
2935392510
3037392310

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 5:50 AM to 6:25 AM, and sunset from 6:54 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:506:54
213.05:516:53
313.05:526:51
412.95:536:49
512.95:556:47
612.85:566:45
712.85:576:43
812.75:586:41
912.75:596:39
1012.66:016:37
1112.66:026:35
1212.56:036:34
1312.56:046:32
1412.46:056:30
1512.46:066:28
1612.36:086:26
1712.26:096:24
1812.26:106:22
1912.16:116:20
2012.16:126:18
2112.06:146:16
2212.06:156:14
2311.96:166:12
2411.96:176:10
2511.86:196:08
2611.86:206:06
2711.76:216:04
2811.76:226:03
2911.66:236:01
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 4.25 kWh/m².

For context, solar energy here swings from a low near 1.36 kWh/m² to a high of 6.61 kWh/m² in July across the year — September's 4.25 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.4Bright
134.4Bright
144.3Bright
154.3Bright
164.2Bright
174.1Bright
184.1Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.8Moderate
253.7Moderate
263.7Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.4Moderate
Planning a trip in September

Hazard calendar for Sestri Levante

In seasonPeak

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

Sestri Levante's rainy season runs September–April, 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 Sestri Levante?

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

6.9
Sightseeing
4th-best month of the year
4.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Sestri Levante for sightseeing.

What to pack for Sestri Levante in September

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

In September, Sestri Levante sees daytime highs around 21°C and nights near 18°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Sestri Levante 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 17 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 4 to Oct 19 — about 4.5 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 Sestri Levante 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 Sestri Levante peaks around July 14 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowJul 14UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr7Very high
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Sestri Levante 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 Sestri Levante is worst in March — around 15 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 2115 µg/m³Dec 119 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Moderate
Mar15Moderate
Apr14Moderate
May14Moderate
Jun13Moderate
Jul12Moderate
Aug12Moderate
Sep11Good
Oct12Good
Nov10Good
Dec9Good
Location & terrain

Where is Sestri Levante?

Sestri Levante sits at 44.3°N, 9.4°E, 10 m above sea level, in Italy. The nearest listed city is Chiavari, 8.0 km away.

Topography around Sestri Levante

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

Within 3 km, the terrain around Sestri Levante has significant variations in elevation — a maximum elevation change of 493 m around an average of 56 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,405 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,081 m.

The land around Sestri Levante is covered by water (47%) and trees (38%) within 3 km, water (50%) and trees (44%) within 16 km, and trees (53%) and water (33%) within 80 km.

3 km
493 m
16 km
1,405 m
80 km
2,081 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Chiavari 8.0 km · Portofino 15 km · Rapallo 16 km · Cinque Terre 32 km · Genoa 39 km · La Spezia 39 km · Sarzana 49 km · Marina di Carrara 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 Sestri Levante (44.2732°, 9.3968°, elevation 10 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).