Palermo weather in September

In September, Palermo sees average daytime highs of 27°C and overnight lows near 19°C, with 61 mm of rain across 8.8 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 28°C in the first days to 25°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 12 h 54 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Palermo's 4th-clearest and 9th-windiest month. For the whole year in context, see Palermo's year-round climate.

Daytime high
27°
4th warmest
Overnight low
19°
10th coldest
Rainfall
61 mm
8.8 wet days
Daylight
12 h 12 min
5:54 AM – 6:08 PM
Cloud cover
38%
4th clearest
Wind
8 km/h
9th windiest
Solar energy
5.06 kWh/m²
Travel score
7.0
out of 10
Air quality
Moderate
PM2.5 10.6 µg/m³ · 2018

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 28°C in the first days to 25°C by the end.

A typical September day in Palermo reaches about 27°C in the afternoon and slips back to 19°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°C. Set against its neighbours, September runs about 4°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12921
22921
32820
42820
52820
62820
72820
82820
92820
102720
112720
122719
132719
142719
152719
162719
172619
182619
192619
202618
212618
222618
232618
242518
252518
262518
272518
282518
292517
302517

Palermo 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 daysDaylight (hours)Travel score
Jan13° / 6510.39.73.7
Feb13° / 6810.310.53.7
Mar16° / 6410.511.74.9
Apr18° / 10°619.6136.2
May23° / 14°376.2147.7
Jun27° / 18°163.614.67.9
Jul30° / 21°61.614.46.8
Aug30° / 22°203.413.56.2
Sep27° / 19°618.812.37.0
Oct23° / 15°819.8117.1
Nov18° / 12°6410.39.95.9
Dec14° / 6711.39.44.2

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 17% of September, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18515
28515
38317
48317
58218
68020
78020
87921
97921
107921
117822
127822
137723
147723
157624
167525
177525
187525
197327
207327
217228
227228
237228
247030
257030
267030
276931
286931
296931
306832

Chance of precipitation in September

Any precipitation

Palermo gets around 61 mm of rain over 8.8 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 29% and peaks near 33% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
121
222
323
424
525
626
726
827
928
1028
1129
1229
1330
1430
1531
1631
1732
1832
1933
2033
2133
2232
2332
2432
2532
2632
2731
2831
2931
3031

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 45% of days. Sticky, muggy-or-worse air turns up on roughly 23% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
151742351
251742341
351842341
461843331
561843321
661843321
761844311
861944301
971945291
1071945281
1171946281
1272046271
1372046261
1472147250
1572247240
1672347230
1772447220
1872547210
1972647200
2072747180
2182847170
2282947160
2383046150
2483246140
2593346120
2693445110
2793645100
2810374590
2910384480
3011394370

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 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
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over September. Sunrise moves from 5:40 AM to 6:06 AM, and sunset from 6:32 PM to 5:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:406:32
212.85:416:31
312.85:426:29
412.75:436:28
512.75:446:26
612.75:456:24
712.65:466:23
812.65:476:21
912.55:476:20
1012.55:486:18
1112.55:496:16
1212.45:506:15
1312.45:516:13
1412.35:526:11
1512.35:536:10
1612.25:546:08
1712.25:546:07
1812.25:556:05
1912.15:566:03
2012.15:576:02
2112.05:586:00
2212.05:595:58
2311.96:005:57
2411.96:015:55
2511.96:025:53
2611.86:035:52
2711.86:045:50
2811.76:045:49
2911.76:055:47
3011.76:065:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.06 kWh/m².

For context, solar energy here swings from a low near 2.05 kWh/m² to a high of 7.55 kWh/m² in July across the year — September's 5.06 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.8Bright
35.8Bright
45.7Bright
55.6Bright
65.6Bright
75.5Bright
85.5Bright
95.4Bright
105.3Bright
115.3Bright
125.2Bright
135.2Bright
145.1Bright
155.1Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.8Bright
214.8Bright
224.7Bright
234.7Bright
244.6Bright
254.6Bright
264.5Bright
274.5Bright
284.5Bright
294.4Bright
304.4Bright
Planning a trip in September

Is September a good time to visit Palermo?

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

7.0
Sightseeing
4th-best month of the year
7.1
Beach & pool
4th-best month of the year

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

What to pack for Palermo in September

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

In September, Palermo sees daytime highs around 27°C and nights near 19°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Palermo in September

The nearest coast averages about 25°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 27°C and coldest in February near 14°C.

It's comfortable for a long swim from May 28 to Nov 11 — about 5.5 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar15Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul26Warm
Aug27Warm
Sep25Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Palermo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Palermo peaks around July 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateVery highHighModerateJul 16UV 10Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb4Moderate
Mar6High
Apr4Moderate
May5High
Jun9Very high
Jul10Extreme
Aug8Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low
Location & terrain

Where is Palermo?

Palermo sits at 38.1°N, 13.4°E, 14 m above sea level, in Italy. The nearest listed city is Monreale, 8.0 km away.

Topography around Palermo

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

Within 3 km, the terrain around Palermo has only modest variations in elevation — a maximum elevation change of 83 m around an average of 25 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,249 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,962 m.

The land around Palermo is covered by artificial surfaces (59%) and water (26%) within 3 km, water (36%), trees (29%) and grassland (21%) within 16 km, and water (49%) and grassland (26%) within 80 km.

3 km
83 m
16 km
1,249 m
80 km
1,962 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Monreale 8.0 km · Villabate 8.0 km · Misilmeri 12 km · Bagheria 14 km · Carini 16 km · Partinico 23 km · Termini Imerese 33 km · Alcamo 38 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 Palermo (38.1166°, 13.3636°, elevation 14 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).