San Giovanni Rotondo weather in September

In September, San Giovanni Rotondo sees average daytime highs of 26°C and overnight lows near 17°C, with 64 mm of rain across 9.5 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 5th-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 51% of the time in September, and the air most often feels comfortable.

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 Giovanni Rotondo's 4th-clearest and 9th-windiest month. For the whole year in context, see San Giovanni Rotondo's year-round climate.

Daytime high
26°
4th warmest
Overnight low
17°
9th coldest
Rainfall
64 mm
9.5 wet days
Daylight
12 h 18 min
5:43 AM – 6:00 PM
Cloud cover
43%
4th clearest
Wind
10 km/h
9th windiest
Solar energy
4.67 kWh/m²
Travel score
7.0
out of 10

San Giovanni Rotondo 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 28°C in the first days to 24°C by the end.

A typical September day in San Giovanni Rotondo reaches about 26°C in the afternoon and slips back to 17°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 30°C. Set against its neighbours, September runs about 5°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
62718
72718
82718
92718
102718
112618
122618
132617
142617
152617
162617
172617
182517
192517
202517
212516
222516
232516
242416
252416
262416
272416
282415
292415
302315

San Giovanni Rotondo weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 6210.50.69.32.6
Feb12° / 5410.50.810.32.9
Mar14° / 6310.60.311.74.3
Apr18° / 10°66100.113.15.8
May23° / 14°558.8014.37.2
Jun28° / 18°426.60156.9
Jul30° / 21°335.1014.75.9
Aug30° / 21°335.8013.75.8
Sep26° / 17°649.5012.37.0
Oct21° / 13°669.3010.96.8
Nov16° / 739.60.19.65.0
Dec12° / 6810.90.693.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% 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 (%)
17921
27822
37624
47624
57426
67426
77327
87228
97129
107129
117030
127030
136931
146832
156832
166931
176832
186832
196733
206733
216634
226634
236634
246634
256535
266535
276535
286535
296535
306436

Chance of precipitation in September

Any precipitation

San Giovanni Rotondo gets around 64 mm of rain over 9.5 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 31% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
127
227
328
429
529
630
730
831
931
1031
1131
1231
1331
1431
1531
1631
1731
1832
1932
2032
2132
2232
2332
2432
2532
2632
2733
2833
2933
3033

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
118274212
219274211
320284210
42028429
52128429
62129428
72229417
82330417
92330406
102431396
112431396
122532385
132632375
142733365
152733355
162834335
172934324
183035314
193136294
203336284
213437263
223537253
233637243
243738232
253838222
263938212
274039201
284039191
294140181
304240171

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 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 5:27 AM to 5:58 AM, and sunset from 6:26 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:276:26
212.95:286:25
312.95:296:23
412.85:306:21
512.85:326:19
612.85:336:18
712.75:346:16
812.75:356:14
912.65:366:12
1012.65:376:10
1112.55:386:09
1212.55:396:07
1312.45:406:05
1412.45:416:03
1512.35:426:01
1612.35:436:00
1712.25:445:58
1812.25:455:56
1912.15:465:54
2012.15:475:52
2112.05:485:51
2212.05:505:49
2311.95:515:47
2411.95:525:45
2511.85:535:43
2611.85:545:42
2711.75:555:40
2811.75:565:38
2911.75:575:36
3011.65:585:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.67 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 7.16 kWh/m² in June across the year — September's 4.67 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.4Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.1Bright
85.0Bright
95.0Bright
105.0Bright
114.9Bright
124.8Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.6Bright
184.6Bright
194.5Bright
204.5Bright
214.4Bright
224.4Bright
234.3Bright
244.3Bright
254.2Bright
264.2Bright
274.1Bright
284.1Bright
294.0Bright
304.0Moderate
Planning a trip in September

Is September a good time to visit San Giovanni Rotondo?

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

7.0
Sightseeing
2nd-best month of the year
6.6
Beach & pool
4th-best month of the year

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

What to pack for San Giovanni Rotondo in September

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

In September, San Giovanni Rotondo sees daytime highs around 26°C and nights near 17°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near San Giovanni Rotondo 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 at the nearest coast (about 34 km away) is warmest in August at about 26°C and coldest in February near 12°C.

It's comfortable for a long swim from May 31 to Oct 22 — about 4.8 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Warm
Oct21Refreshing
Nov17Cool
Dec14Bracing

UV index in San Giovanni Rotondo 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 Giovanni Rotondo peaks around July 16 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 16UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr5Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is San Giovanni Rotondo?

San Giovanni Rotondo sits at 41.7°N, 15.7°E, 566 m above sea level, in Italy. The nearest listed city is Manfredonia, 18 km away.

Topography around San Giovanni Rotondo

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

Within 3 km, the terrain around San Giovanni Rotondo has large variations in elevation — a maximum elevation change of 631 m around an average of 668 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,053 m; within 80 km, large variations in elevation — a maximum elevation change of 1,137 m.

The land around San Giovanni Rotondo is covered by grassland (61%) within 3 km, trees (35%), grassland (27%) and cropland (26%) within 16 km, and water (45%) and cropland (34%) within 80 km.

3 km
631 m
16 km
1,053 m
80 km
1,137 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Manfredonia 18 km · San Nicandro Garganico 20 km · San Severo 29 km · Foggia 31 km · Torremaggiore 36 km · Lucera 39 km · Orta Nova 42 km · Cerignola 51 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 Giovanni Rotondo (41.7064°, 15.7277°, elevation 566 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).