Terracina weather in September

In September, Terracina sees average daytime highs of 24°C and overnight lows near 20°C, with 97 mm of rain across 8.4 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 5th-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 58% 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 Terracina's 4th-clearest and 9th-windiest month. For the whole year in context, see Terracina's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
20°
10th coldest
Rainfall
97 mm
8.4 wet days
Daylight
12 h 18 min
5:53 AM – 6:09 PM
Cloud cover
40%
4th clearest
Wind
10 km/h
9th windiest
Solar energy
4.72 kWh/m²
Travel score
7.4
out of 10

Terracina 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 Terracina reaches about 24°C in the afternoon and slips back to 20°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 26°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)
12621
22521
32521
42521
52521
62521
72521
82520
92520
102420
112420
122420
132420
142420
152420
162420
172420
182319
192319
202319
212319
222319
232319
242319
252319
262219
272218
282218
292218
302218

Terracina weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10210.59.43.1
Feb12° / 9710.310.33.2
Mar14° / 919.311.74.1
Apr16° / 12°781013.15.1
May20° / 15°527.214.36.9
Jun24° / 19°25414.98.3
Jul26° / 22°142.714.78.6
Aug27° / 22°192.613.78.4
Sep24° / 20°978.412.37.4
Oct20° / 16°14310.710.96.4
Nov16° / 13°201149.74.8
Dec13° / 10°14512.59.13.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 58% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% 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 (%)
18317
28317
38218
48119
57921
67921
77822
87723
97723
107525
117525
127426
137327
147228
157228
167129
177129
187129
197129
207030
217030
226931
236931
246931
256931
266832
276832
286832
296832
306733

Chance of precipitation in September

Any precipitation

Terracina gets around 97 mm of rain over 8.4 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 32% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
118
219
320
421
522
623
724
825
925
1026
1127
1228
1329
1429
1530
1631
1731
1832
1932
2032
2132
2232
2332
2431
2531
2631
2731
2831
2931
3031

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 35% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1411284413
2412294312
3513304210
451431429
551532417
651533406
761634405
861735394
961735393
1061835382
1171835382
1271936372
1372036361
1482036351
1582136341
1682236331
1792336311
18102436291
19102536281
20112636261
21122736251
22122836231
23132937211
24132937200
25143038180
26143138160
27143238150
28153339140
29153339120
30153439110

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
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
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 5:38 AM to 6:08 AM, and sunset from 6:36 PM to 5:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:386:36
212.95:396:34
312.95:406:32
412.85:416:31
512.85:426:29
612.75:436:27
712.75:446:25
812.65:456:24
912.65:466:22
1012.65:476:20
1112.55:486:18
1212.55:496:17
1312.45:506:15
1412.45:516:13
1512.35:526:11
1612.35:536:09
1712.25:546:08
1812.25:556:06
1912.15:566:04
2012.15:576:02
2112.05:586:01
2212.05:595:59
2311.96:015:57
2411.96:025:55
2511.86:035:53
2611.86:045:52
2711.86:055:50
2811.76:065:48
2911.76:075:46
3011.66:085:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.72 kWh/m².

For context, solar energy here swings from a low near 1.72 kWh/m² to a high of 7.17 kWh/m² in July across the year — September's 4.72 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.4Bright
55.3Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.0Bright
115.0Bright
124.9Bright
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

Hazard calendar for Terracina

In seasonPeak

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

Terracina's rainy season runs September–March, 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 Terracina?

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
6.1
Beach & pool
4th-best month of the year

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

What to pack for Terracina in September

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

In September, Terracina sees daytime highs around 24°C and nights near 20°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Terracina 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 21 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from May 29 to Nov 4 — about 5.3 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Terracina 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 Terracina peaks around July 16 at about 10 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 16UV 10Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Terracina?

Terracina sits at 41.3°N, 13.2°E, 22 m above sea level, in Italy. The nearest listed city is Fondi, 17 km away.

Topography around Terracina

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

Within 3 km, the terrain around Terracina has significant variations in elevation — a maximum elevation change of 389 m around an average of 36 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,077 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,233 m.

The land around Terracina is covered by water (40%) and trees (23%) within 3 km, water (42%) and trees (23%) within 16 km, and water (48%) and trees (32%) within 80 km.

3 km
389 m
16 km
1,077 m
80 km
2,233 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Fondi 17 km · Sabaudia 18 km · Sezze 28 km · Gaeta 29 km · Formia 31 km · Latina 34 km · Frosinone 40 km · Minturno 42 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 Terracina (41.2917°, 13.2436°, elevation 22 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).