San Benedetto del Tronto weather in September

In September, San Benedetto del Tronto sees average daytime highs of 23°C and overnight lows near 21°C, with 59 mm of rain across 7.6 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 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 55% of the time in September, and the air most often feels muggy.

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 Benedetto del Tronto's 4th-clearest and 7th-windiest month. For the whole year in context, see San Benedetto del Tronto's year-round climate.

Daytime high
23°
4th warmest
Overnight low
21°
9th coldest
Rainfall
59 mm
7.6 wet days
Daylight
12 h 18 min
5:50 AM – 6:07 PM
Cloud cover
40%
4th clearest
Wind
12 km/h
7th windiest
Solar energy
4.46 kWh/m²
Travel score
7.5
out of 10
Air quality
Good
PM10 26.1 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 21°C by the end.

A typical September day in San Benedetto del Tronto reaches about 23°C in the afternoon and slips back to 21°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 25°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12522
22522
32522
42422
52422
62422
72422
82421
92421
102421
112321
122321
132321
142321
152321
162320
172320
182320
192220
202220
212220
222220
232220
242219
252219
262119
272119
282119
292119
302119

San Benedetto del Tronto 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
Jan11° / 589.10.59.22.6
Feb11° / 528.90.510.22.6
Mar12° / 10°567.8011.63.5
Apr15° / 13°518.5013.14.8
May19° / 17°466.9014.46.8
Jun23° / 21°314.9015.18.1
Jul26° / 24°213.6014.88.4
Aug26° / 24°304.2013.88.1
Sep23° / 21°597.6012.37.5
Oct19° / 17°577.8010.86.5
Nov15° / 13°729.809.54.6
Dec12° / 10°7410.70.28.93.1

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 (%)
18119
28020
37921
47822
57723
67624
77624
87525
97426
107426
117327
127228
137228
147129
157030
167030
177030
187030
196931
206832
216832
226832
236931
246931
256832
266832
276832
286832
296733
306733

Chance of precipitation in September

Any precipitation

San Benedetto del Tronto gets around 59 mm of rain over 7.6 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 25% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
122
223
323
424
524
624
725
825
925
1025
1125
1225
1326
1426
1526
1627
1727
1827
1927
2027
2127
2227
2326
2426
2526
2625
2725
2825
2925
3025

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
17122432241
27122533211
38132633191
48132733181
59142733161
69142834140
710152834130
810152834120
910152835110
1011162835100
1111162835100
121117283590
131218273580
141218273480
151319273470
161320273370
171421273260
181521283160
191622283050
201723282840
211823292740
221924292630
231924302430
242024312320
252025312220
262125322110
272125332010
282226331910
292226341800
302226341700

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 5:33 AM to 6:06 AM, and sunset from 6:35 PM to 5:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:336:35
213.05:346:33
312.95:366:31
412.95:376:30
512.85:386:28
612.85:396:26
712.75:406:24
812.75:416:22
912.65:426:20
1012.65:436:19
1112.55:456:17
1212.55:466:15
1312.45:476:13
1412.45:486:11
1512.35:496:09
1612.35:506:07
1712.25:516:06
1812.25:526:04
1912.15:546:02
2012.15:556:00
2112.05:565:58
2212.05:575:56
2311.95:585:54
2411.95:595:52
2511.86:005:51
2611.86:025:49
2711.76:035:47
2811.76:045:45
2911.66:055:43
3011.66:065:41

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.46 kWh/m².

For context, solar energy here swings from a low near 1.5 kWh/m² to a high of 6.86 kWh/m² in July across the year — September's 4.46 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.1Bright
35.1Bright
45.0Bright
55.0Bright
64.9Bright
74.9Bright
84.8Bright
94.8Bright
104.7Bright
114.7Bright
124.6Bright
134.6Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.2Bright
234.1Bright
244.0Bright
254.0Bright
264.0Moderate
273.9Moderate
283.9Moderate
293.8Moderate
303.8Moderate
Planning a trip in September

Is September a good time to visit San Benedetto del Tronto?

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

7.5
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 San Benedetto del Tronto for general sightseeing.

What to pack for San Benedetto del Tronto in September

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

In September, San Benedetto del Tronto sees daytime highs around 23°C and nights near 21°C. Worth packing: light clothes. About 8 days see rain.

light clothes

Sea temperature near San Benedetto del Tronto 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 19 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 Jun 1 to Oct 13 — about 4.4 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
Sep23Refreshing
Oct20Cool
Nov17Cool
Dec15Bracing

UV index in San Benedetto del Tronto 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 San Benedetto del Tronto 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
Apr6High
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in San Benedetto del Tronto 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 Benedetto del Tronto is worst in April — around 17 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1017 µg/m³Dec 1310 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar17Moderate
Apr17Moderate
May14Moderate
Jun14Moderate
Jul12Moderate
Aug12Moderate
Sep10Good
Oct12Good
Nov10Good
Dec10Good
Location & terrain

Where is San Benedetto del Tronto?

San Benedetto del Tronto sits at 43.0°N, 13.9°E, 4 m above sea level, in Italy. The nearest listed city is Giulianova, 24 km away.

Topography around San Benedetto del Tronto

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

Within 3 km, the terrain around San Benedetto del Tronto has significant variations in elevation — a maximum elevation change of 277 m around an average of 50 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 503 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,847 m.

The land around San Benedetto del Tronto is covered by water (37%) and trees (20%) within 3 km, water (46%) within 16 km, and trees (32%) and water (29%) within 80 km.

3 km
277 m
16 km
503 m
80 km
2,847 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Giulianova 24 km · Porto San Giorgio 25 km · Fermo 26 km · Ascoli Piceno 27 km · Roseto degli Abruzzi 34 km · Porto Sant'Elpidio 34 km · Teramo 36 km · Civitanova Marche 41 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 Benedetto del Tronto (42.9568°, 13.8768°, 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. 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).