Anzio weather in September

In September, Anzio sees average daytime highs of 23°C and overnight lows near 21°C, with 89 mm of rain across 7.9 wet days and about 12.3 hours of daylight. It is the 3rd-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 62% 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 Anzio's 4th-clearest and 9th-windiest month. For the whole year in context, see Anzio's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
21°
10th coldest
Rainfall
89 mm
7.9 wet days
Daylight
12 h 18 min
5:56 AM – 6:12 PM
Cloud cover
37%
4th clearest
Wind
13 km/h
9th windiest
Solar energy
4.66 kWh/m²
Travel score
7.6
out of 10

Anzio 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 25°C in the first days to 22°C by the end.

A typical September day in Anzio 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 21°C and 25°C. Set against its neighbours, September runs about 3°C cooler than August and about 3°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12523
22523
32523
42422
52422
62422
72422
82422
92422
102422
112422
122422
132421
142321
152321
162321
172321
182321
192321
202321
212321
222320
232320
242220
252220
262220
272220
282220
292220
302220

Anzio weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10°8810.89.33.4
Feb12° / 10°8110.310.33.4
Mar14° / 11°738.911.74.2
Apr16° / 13°618.113.15.2
May19° / 17°395.714.37.0
Jun23° / 21°203.114.98.5
Jul25° / 23°131.914.79.1
Aug26° / 24°192.413.78.7
Sep23° / 21°897.912.37.6
Oct20° / 18°13211.110.96.4
Nov17° / 14°163149.74.9
Dec14° / 11°12112.89.13.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 62% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 25%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18515
28416
38317
48218
58218
68020
77921
87822
97822
107723
117723
127525
137525
147426
157426
167327
177327
187327
197327
207228
217129
227129
237129
247129
257030
267030
277030
287030
297030
307030

Chance of precipitation in September

Any precipitation

Anzio gets around 89 mm of rain over 7.9 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 32% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
117
218
318
419
520
621
722
823
924
1025
1125
1226
1327
1428
1528
1629
1730
1830
1930
2031
2131
2231
2331
2431
2531
2631
2731
2832
2932
3032

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 35% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1282138291
2292339271
3292439241
43102540220
53102640200
63112741180
73112842160
83112942150
94112942130
104123043120
114123043110
125123142100
13513314290
14513324190
15614334080
16614333970
17715343870
18716353660
19816363560
20817363350
21918373240
22919383040
231019392940
241020402830
251021402630
261021412520
271122422420
281123422320
291124422210
301124422110

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

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 5:40 AM to 6:11 AM, and sunset from 6:38 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:406:38
212.95:416:37
312.95:426:35
412.85:436:33
512.85:446:32
612.75:456:30
712.75:466:28
812.75:476:26
912.65:486:25
1012.65:496:23
1112.55:506:21
1212.55:516:19
1312.45:536:17
1412.45:546:16
1512.35:556:14
1612.35:566:12
1712.25:576:10
1812.25:586:08
1912.15:596:07
2012.16:006:05
2112.06:016:03
2212.06:026:01
2311.96:035:59
2411.96:045:58
2511.86:055:56
2611.86:065:54
2711.86:075:52
2811.76:085:51
2911.76:095:49
3011.66:115:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.66 kWh/m².

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 7.18 kWh/m² in July across the year — September's 4.66 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.4Bright
35.4Bright
45.3Bright
55.3Bright
65.2Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
114.9Bright
124.8Bright
134.8Bright
144.7Bright
154.7Bright
164.6Bright
174.5Bright
184.5Bright
194.4Bright
204.4Bright
214.3Bright
224.3Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.0Bright
284.0Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Anzio

In seasonPeak

In September, Anzio sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Anzio's rainy season runs September–February, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Anzio?

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

7.6
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 Anzio for general sightseeing.

What to pack for Anzio in September

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

In September, Anzio sees daytime highs around 23°C and nights near 21°C. Worth packing: light clothes and sun protection. About 8 days see rain.

light clothessun protection

Sea temperature near Anzio 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 May 30 to Nov 2 — about 5.2 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr16Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Refreshing
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Anzio 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 Anzio peaks around July 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 15UV 10Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Anzio?

Anzio sits at 41.5°N, 12.6°E, 3 m above sea level, in Italy. The nearest listed city is Nettuno, 4.0 km away.

Topography around Anzio

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

Within 3 km, the terrain around Anzio has only modest variations in elevation — a maximum elevation change of 76 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 95 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,137 m.

The land around Anzio is covered by water (62%) and artificial surfaces (22%) within 3 km, water (62%) within 16 km, and water (46%) and trees (31%) within 80 km.

3 km
76 m
16 km
95 m
80 km
2,137 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Nettuno 4.0 km · Marina di Ardea-Tor San Lorenzo 13 km · Aprilia 16 km · Ardea 18 km · Torvaianica 23 km · Cisterna di Latina 23 km · Latina 24 km · Pomezia 26 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 Anzio (41.4526°, 12.6216°, elevation 3 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).