Casa Santa weather in September

In September, Casa Santa sees average daytime highs of 26°C and overnight lows near 21°C, with 49 mm of rain across 6.8 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 25°C by the end. The sky is clear or mostly clear about 66% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Casa Santa's 4th-clearest and 9th-windiest month. For the whole year in context, see Casa Santa's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
21°
10th coldest
Rainfall
49 mm
6.8 wet days
Daylight
12 h 12 min
5:57 AM – 6:11 PM
Cloud cover
34%
4th clearest
Wind
14 km/h
9th windiest
Solar energy
5.14 kWh/m²
Travel score
7.6
out of 10

Casa Santa is human settlement in Italy.

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 25°C by the end.

A typical September day in Casa Santa reaches about 26°C in the afternoon and slips back to 21°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 28°C. Set against its neighbours, September runs about 3°C cooler than August and about 3°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12823
22823
32823
42823
52722
62722
72722
82722
92722
102722
112722
122722
132622
142622
152621
162621
172621
182621
192621
202621
212621
222521
232521
242521
252520
262520
272520
282520
292520
302520

Casa Santa weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 10°65109.74.3
Feb14° / 10°629.510.54.2
Mar16° / 11°558.611.75.2
Apr18° / 13°437.2136.4
May22° / 16°224.4147.9
Jun26° / 20°71.514.68.9
Jul28° / 23°30.714.48.2
Aug29° / 24°91.613.57.3
Sep26° / 21°496.812.37.6
Oct23° / 18°778.3117.4
Nov19° / 15°7810.49.96.1
Dec16° / 12°7211.29.44.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 66% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18812
28713
38614
48515
58515
68317
78317
88317
98119
108119
118119
128020
138020
147921
157822
167822
177723
187723
197624
207624
217624
227624
237624
247525
257525
267525
277525
287426
297426
307426

Chance of precipitation in September

Any precipitation

Casa Santa gets around 49 mm of rain over 6.8 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 23% and peaks near 26% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
112
213
315
416
517
618
719
820
921
1022
1122
1223
1324
1424
1525
1625
1726
1826
1926
2026
2126
2226
2326
2426
2526
2626
2726
2826
2926
3026

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 43% of days. Sticky, muggy-or-worse air turns up on roughly 53% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
115215122
226225021
326235019
427244918
527254917
627264916
728264915
828274914
928274913
1039284912
1139284911
1239294811
13310294810
14310304710
1531131469
1631131459
1741232448
1841333438
1941433427
2041434407
2141535397
2241636386
2341736376
2451737365
2551838355
2651938344
2751939344
2852039333
2952139323
3062139322

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 15 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
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over September. Sunrise moves from 5:44 AM to 6:10 AM, and sunset from 6:35 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:446:35
212.85:456:34
312.85:456:32
412.75:466:31
512.75:476:29
612.75:486:28
712.65:496:26
812.65:506:24
912.55:516:23
1012.55:526:21
1112.55:526:20
1212.45:536:18
1312.45:546:16
1412.35:556:15
1512.35:566:13
1612.25:576:11
1712.25:586:10
1812.25:596:08
1912.16:006:06
2012.16:006:05
2112.06:016:03
2212.06:026:02
2311.96:036:00
2411.96:045:58
2511.96:055:57
2611.86:065:55
2711.86:075:54
2811.76:085:52
2911.76:095:50
3011.76:105:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.14 kWh/m².

For context, solar energy here swings from a low near 2.1 kWh/m² to a high of 7.59 kWh/m² in June across the year — September's 5.14 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.7Bright
65.7Bright
75.6Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.1Bright
175.1Bright
185.0Bright
195.0Bright
204.9Bright
214.9Bright
224.8Bright
234.8Bright
244.7Bright
254.7Bright
264.6Bright
274.6Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in September

Is September a good time to visit Casa Santa?

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
7.3
Beach & pool
4th-best month of the year

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

What to pack for Casa Santa in September

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

In September, Casa Santa sees daytime highs around 26°C and nights near 21°C. Worth packing: light clothes and sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Casa Santa in September

The nearest coast averages about 25°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 14°C.

It's comfortable for a long swim from Jun 1 to Nov 8 — about 5.3 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar15Bracing
Apr16Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Casa Santa 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 Casa Santa peaks around July 17 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateVery highHighModerateJul 17UV 10Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb4Moderate
Mar6High
Apr4Moderate
May5High
Jun8Very high
Jul10Very high
Aug8Very high
Sep6High
Oct5Moderate
Nov3Moderate
Dec2Low
Location & terrain

Where is Casa Santa?

Casa Santa sits at 38.0°N, 12.5°E, 34 m above sea level, in Italy. The nearest listed city is Trapani, 1.0 km away.

Topography around Casa Santa

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

Within 3 km, the terrain around Casa Santa has large variations in elevation — a maximum elevation change of 702 m around an average of 80 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 765 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,528 m.

The land around Casa Santa is covered by artificial surfaces (33%), grassland (30%) and water (21%) within 3 km, water (54%) and grassland (21%) within 16 km, and water (67%) within 80 km.

3 km
702 m
16 km
765 m
80 km
1,528 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Trapani 1.0 km · Marsala 27 km · Alcamo 37 km · Mazara del Vallo 41 km · Castelvetrano 44 km · Partinico 50 km · Carini 57 km · Monreale 65 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 Casa Santa (38.0251°, 12.5484°, elevation 34 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).