Montesilvano weather in September

In September, Montesilvano sees average daytime highs of 24°C and overnight lows near 19°C, with 68 mm of rain across 8.1 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 4th-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 54% 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 Montesilvano's 4th-clearest and 7th-windiest month. For the whole year in context, see Montesilvano's year-round climate.

Daytime high
24°
4th warmest
Overnight low
19°
9th coldest
Rainfall
68 mm
8.1 wet days
Daylight
12 h 18 min
5:49 AM – 6:06 PM
Cloud cover
41%
4th clearest
Wind
9 km/h
7th windiest
Solar energy
4.52 kWh/m²
Travel score
7.4
out of 10
Air quality
Moderate
PM2.5 13.8 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 Montesilvano reaches about 24°C in the afternoon and slips back to 19°C overnight — a 5°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 4°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12621
22520
32520
42520
52520
62520
72520
82519
92419
102419
112419
122419
132419
142419
152419
162418
172318
182318
192318
202318
212318
222318
232318
242217
252217
262217
272217
282217
292217
302217

Montesilvano weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 73101.79.22.4
Feb11° / 589.51.510.32.6
Mar13° / 629.41.211.63.8
Apr16° / 11°629.90.113.15.1
May20° / 15°549.6014.46.6
Jun25° / 19°477.1015.17.7
Jul27° / 22°365.2014.87.9
Aug27° / 22°396.3013.77.6
Sep24° / 19°688.1012.37.4
Oct19° / 15°628.5010.86.6
Nov15° / 11°829.70.39.64.7
Dec12° / 8111.21.58.92.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% 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 29%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18020
27822
37822
47723
57624
67624
77525
87525
97327
107327
117327
127228
137228
147228
157030
167030
177030
187030
196931
206931
216832
226832
236832
246832
256733
266733
276733
286733
296733
306634

Chance of precipitation in September

Any precipitation

Montesilvano gets around 68 mm of rain over 8.1 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 27% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
126
226
326
426
526
626
726
826
927
1027
1127
1227
1328
1428
1528
1629
1729
1829
1929
2029
2129
2229
2328
2428
2527
2627
2727
2827
2927
3027

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 25% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1714303910
281531379
381533368
491634346
591735335
6101836324
7101837313
8101938303
9112038292
10112038292
11112139281
12122139271
13122239271
14132339260
15132338250
16142438240
17142538230
18152637210
19162637200
20172737190
21182836170
22192836160
23202936150
24213036130
25213036120
26223136110
27233236100
2823333590
2924343580
3024343570

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 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
19calm
29calm
39calm
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 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 6:05 AM, and sunset from 6:33 PM to 5:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:336:33
213.05:346:32
312.95:356:30
412.95:366:28
512.85:376:26
612.85:386:25
712.75:396:23
812.75:406:21
912.65:426:19
1012.65:436:17
1112.55:446:15
1212.55:456:14
1312.45:466:12
1412.45:476:10
1512.35:486:08
1612.35:496:06
1712.25:506:04
1812.25:516:03
1912.15:536:01
2012.15:545:59
2112.05:555:57
2212.05:565:55
2311.95:575:53
2411.95:585:51
2511.85:595:50
2611.86:005:48
2711.76:025:46
2811.76:035:44
2911.66:045:42
3011.66:055:41

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.52 kWh/m².

For context, solar energy here swings from a low near 1.55 kWh/m² to a high of 6.87 kWh/m² in July across the year — September's 4.52 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.1Bright
45.1Bright
55.0Bright
65.0Bright
74.9Bright
84.9Bright
94.8Bright
104.8Bright
114.7Bright
124.7Bright
134.6Bright
144.6Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.3Bright
204.3Bright
214.3Bright
224.2Bright
234.2Bright
244.1Bright
254.1Bright
264.0Bright
274.0Moderate
283.9Moderate
293.9Moderate
303.8Moderate
Planning a trip in September

Is September a good time to visit Montesilvano?

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

7.4
Sightseeing
4th-best month of the year
6.0
Beach & pool
4th-best month of the year

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

What to pack for Montesilvano in September

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

In September, Montesilvano sees daytime highs around 24°C and nights near 19°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Montesilvano 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 13 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from May 31 to Oct 15 — about 4.5 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep23Refreshing
Oct20Cool
Nov17Cool
Dec15Cool

UV index in Montesilvano 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 Montesilvano peaks around July 15 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 15UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5High
Apr5High
May7High
Jun8Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Montesilvano 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 Montesilvano is worst in April — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 10 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Montesilvano's WHO annual average of 13.8 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodGoodApr 1018 µg/m³Dec 1310 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb16Moderate
Mar18Moderate
Apr18Moderate
May16Moderate
Jun15Moderate
Jul13Moderate
Aug13Moderate
Sep11Good
Oct12Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Montesilvano?

Montesilvano sits at 42.5°N, 14.1°E, 5 m above sea level, in Italy. The nearest listed city is Pescara, 8.0 km away.

Topography around Montesilvano

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

Within 3 km, the terrain around Montesilvano has only modest variations in elevation — a maximum elevation change of 183 m around an average of 32 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 462 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,846 m.

The land around Montesilvano is covered by artificial surfaces (31%), trees (23%) and water (22%) within 3 km, water (43%) within 16 km, and trees (36%), water (27%) and grassland (21%) within 80 km.

3 km
183 m
16 km
462 m
80 km
2,846 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Pescara 8.0 km · Francavilla al Mare 15 km · Chieti 18 km · Roseto degli Abruzzi 21 km · Giulianova 31 km · Lanciano 37 km · Teramo 40 km · San Benedetto del Tronto 54 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 Montesilvano (42.5114°, 14.1451°, elevation 5 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).