San Paolo weather in September

In September, San Paolo sees average daytime highs of 26°C and overnight lows near 18°C, with 60 mm of rain across 8.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 24°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 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 San Paolo's 4th-clearest and 11th-windiest month. For the whole year in context, see San Paolo's year-round climate.

Daytime high
26°
4th warmest
Overnight low
18°
9th coldest
Rainfall
60 mm
8.3 wet days
Daylight
12 h 18 min
5:39 AM – 5:55 PM
Cloud cover
40%
4th clearest
Wind
10 km/h
11th windiest
Solar energy
4.73 kWh/m²
Travel score
7.2
out of 10

San Paolo is quarter of Bari, Italy.

Density
3,271/km²
people per km²
Founded
1970

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 24°C by the end.

A typical September day in San Paolo reaches about 26°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12819
22819
32819
42819
52819
62719
72719
82718
92718
102718
112718
122618
132618
142618
152618
162617
172617
182517
192517
202517
212517
222517
232517
242416
252416
262416
272416
282416
292416
302416

San Paolo weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan12° / 579.20.49.43.1
Feb12° / 589.50.710.43.3
Mar15° / 599.70.211.74.6
Apr18° / 10°599.70.113.16.0
May23° / 14°427.7014.37.4
Jun27° / 18°355.8014.97.3
Jul30° / 21°254.4014.76.3
Aug30° / 21°255.3013.66.0
Sep26° / 18°608.3012.37.2
Oct21° / 14°668.4010.97.0
Nov17° / 10°728.909.75.4
Dec13° / 599.20.39.13.6

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 19% of September, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18218
28020
38020
47822
57723
67723
77624
87624
97525
107525
117426
127426
137327
147327
157228
167228
177327
187228
197228
207129
217129
227129
237030
247129
257030
267030
276931
286931
296832
306733

Chance of precipitation in September

Any precipitation

San Paolo gets around 60 mm of rain over 8.3 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
128
228
329
429
530
630
730
830
929
1029
1128
1228
1327
1427
1527
1627
1726
1826
1926
2026
2126
2226
2326
2426
2526
2627
2727
2827
2927
3028

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 39% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
110244322
211254321
312254320
412254319
513254418
614254417
714254416
815254515
915264514
1016264514
1117264413
1217264413
1317274412
1418274312
1518284211
1619294111
1719304010
1820313910
1921313810
202232379
212333369
222433358
232534348
242634337
252734327
262735326
272835316
282835315
292936305
302936305

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 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
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 5:24 AM to 5:54 AM, and sunset from 6:21 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:246:21
212.95:256:20
312.95:266:18
412.85:276:16
512.85:286:15
612.75:296:13
712.75:306:11
812.65:316:09
912.65:326:08
1012.55:336:06
1112.55:346:04
1212.55:356:02
1312.45:366:01
1412.45:375:59
1512.35:385:57
1612.35:395:55
1712.25:405:53
1812.25:415:52
1912.15:425:50
2012.15:435:48
2112.05:445:46
2212.05:455:45
2311.95:465:43
2411.95:475:41
2511.85:485:39
2611.85:495:38
2711.85:515:36
2811.75:525:34
2911.75:535:32
3011.65:545:31

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.73 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 7.22 kWh/m² in June across the year — September's 4.73 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.0Bright
115.0Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.4Bright
234.4Bright
244.3Bright
254.3Bright
264.2Bright
274.2Bright
284.1Bright
294.1Bright
304.0Bright
Planning a trip in September

Is September a good time to visit San Paolo?

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

7.2
Sightseeing
3rd-best month of the year
6.9
Beach & pool
4th-best month of the year

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

What to pack for San Paolo in September

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

In September, San Paolo sees daytime highs around 26°C and nights near 18°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near San Paolo 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 Jun 2 to Oct 19 — about 4.6 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Refreshing
Oct20Refreshing
Nov17Cool
Dec15Bracing

UV index in San Paolo 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 San Paolo peaks around July 17 at about 9 (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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

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

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1115 µg/m³Dec 159 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar15Moderate
Apr15Moderate
May13Moderate
Jun13Moderate
Jul11Good
Aug12Good
Sep10Good
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is San Paolo?

San Paolo sits at 41.1°N, 16.8°E, 35 m above sea level, in Italy. The nearest listed city is Modugno, 5.0 km away.

Topography around San Paolo

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

Within 3 km, the terrain around San Paolo has only modest variations in elevation — a maximum elevation change of 76 m around an average of 32 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 228 m; within 80 km, large variations in elevation — a maximum elevation change of 848 m.

The land around San Paolo is covered by artificial surfaces (47%) and grassland (21%) within 3 km, water (40%) and trees (22%) within 16 km, and water (36%) and cropland (28%) within 80 km.

3 km
76 m
16 km
228 m
80 km
848 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Modugno 5.0 km · Bari 6.0 km · Bitonto 9.0 km · Carbonara di Bari 9.0 km · Palo del Colle 11 km · Valenzano 12 km · Giovinazzo 12 km · Triggiano 13 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 San Paolo (41.1248°, 16.7926°, elevation 35 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).