Salerno weather in September

In September, Salerno sees average daytime highs of 23°C and overnight lows near 18°C, with 105 mm of rain across 9.7 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 55% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Salerno's 4th-clearest and 8th-windiest month. For the whole year in context, see Salerno's year-round climate.

Daytime high
23°
4th warmest
Overnight low
18°
10th coldest
Rainfall
105 mm
9.7 wet days
Daylight
12 h 18 min
5:47 AM – 6:03 PM
Cloud cover
41%
4th clearest
Wind
9 km/h
8th windiest
Solar energy
4.58 kWh/m²
Travel score
7.2
out of 10
Air quality
Moderate
PM2.5 10.6 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 22°C by the end.

A typical September day in Salerno reaches about 23°C in the afternoon and slips back to 18°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 26°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)
12520
22519
32519
42519
52519
62419
72419
82419
92419
102418
112418
122418
132418
142318
152318
162318
172318
182318
192317
202317
212317
222217
232217
242217
252217
262217
272216
282216
292216
302116

Salerno weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 14512.40.59.42.5
Feb11° / 12811.80.910.42.5
Mar13° / 12711.40.311.73.6
Apr16° / 10°11012.10.113.14.7
May20° / 14°788.8014.26.6
Jun23° / 18°376014.98.0
Jul26° / 20°224.2014.68.3
Aug27° / 21°284.7013.68.0
Sep23° / 18°1059.7012.37.2
Oct20° / 14°15511.1010.96.3
Nov15° / 11°21713.60.19.74.4
Dec12° / 18013.60.49.12.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% 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 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18218
28020
38020
47822
57723
67624
77525
87525
97327
107327
117228
127228
137129
147129
157129
167030
177030
187030
196931
206931
216931
226931
236832
246832
256832
266832
276733
286733
296634
306634

Chance of precipitation in September

Any precipitation

Salerno gets around 105 mm of rain over 9.7 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 34% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
127
228
329
429
530
631
731
832
932
1032
1133
1233
1333
1433
1533
1633
1733
1833
1933
2033
2133
2233
2333
2433
2533
2633
2734
2834
2934
3034

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 15% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1101836342
2101937322
3112038291
4122139271
5122240251
6132341221
7132342211
8142443191
9142444170
10152444160
11162544150
12162544150
13172544140
14182543140
15192543130
16202642130
17212641120
18222740110
19242738110
20252837100
2126293690
2228293490
2329303380
2429313270
2530333160
2631343060
2731362950
2831372840
2932382730
3032392630

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 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 78 minutes over September. Sunrise moves from 5:32 AM to 6:02 AM, and sunset from 6:29 PM to 5:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:326:29
212.95:336:27
312.95:346:26
412.85:356:24
512.85:366:22
612.75:376:21
712.75:386:19
812.65:396:17
912.65:406:15
1012.55:416:14
1112.55:426:12
1212.45:436:10
1312.45:446:08
1412.45:456:07
1512.35:466:05
1612.35:476:03
1712.25:486:01
1812.25:496:00
1912.15:505:58
2012.15:515:56
2112.05:525:54
2212.05:535:53
2311.95:545:51
2411.95:555:49
2511.85:565:47
2611.85:575:46
2711.85:585:44
2811.75:595:42
2911.76:015:40
3011.66:025:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.58 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 7.01 kWh/m² in July across the year — September's 4.58 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.3Bright
35.3Bright
45.2Bright
55.1Bright
65.1Bright
75.0Bright
85.0Bright
94.9Bright
104.8Bright
114.8Bright
124.8Bright
134.7Bright
144.7Bright
154.6Bright
164.5Bright
174.5Bright
184.5Bright
194.4Bright
204.3Bright
214.3Bright
224.3Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.0Bright
284.0Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Salerno

In seasonPeak

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

Salerno'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 Salerno?

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

7.2
Sightseeing
4th-best month of the year
5.7
Beach & pool
4th-best month of the year

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

What to pack for Salerno in September

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

In September, Salerno sees daytime highs around 23°C and nights near 18°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Salerno in September

The nearest coast averages about 24°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from May 27 to Nov 8 — about 5.5 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Salerno in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Salerno peaks around July 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highHighModerateLowJul 16UV 10Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun9Very high
Jul10Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Salerno?

Salerno sits at 40.7°N, 14.8°E, 4 m above sea level, in Italy. The nearest listed city is Cava Dè Tirreni, 8.0 km away.

Topography around Salerno

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

Within 3 km, the terrain around Salerno has significant variations in elevation — a maximum elevation change of 376 m around an average of 89 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,588 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,889 m.

The land around Salerno is covered by trees (46%), water (25%) and artificial surfaces (24%) within 3 km, trees (50%) and water (30%) within 16 km, and trees (44%) and water (30%) within 80 km.

3 km
376 m
16 km
1,588 m
80 km
1,889 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Cava Dè Tirreni 8.0 km · Nocera Superiore 12 km · Nocera Inferiore 15 km · Amalfi 17 km · Pagani 17 km · Battipaglia 18 km · Angri 20 km · Sarno 21 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 Salerno (40.6754°, 14.7933°, elevation 4 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).