Oristano weather in September

In September, Oristano sees average daytime highs of 25°C and overnight lows near 19°C, with 38 mm of rain across 5.1 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 24°C by the end. The sky is clear or mostly clear about 60% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Oristano's 4th-clearest and 9th-windiest month. For the whole year in context, see Oristano's year-round climate.

Daytime high
25°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
38 mm
5.1 wet days
Daylight
12 h 18 min
6:12 AM – 6:28 PM
Cloud cover
37%
4th clearest
Wind
11 km/h
9th windiest
Solar energy
5.02 kWh/m²
Travel score
8.0
out of 10
Air quality
Good
PM10 26.5 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 27°C in the first days to 24°C by the end.

A typical September day in Oristano reaches about 25°C in the afternoon and slips back to 19°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 28°C. Set against its neighbours, September runs about 3°C cooler than August and about 3°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12720
22720
32720
42620
52620
62620
72620
82619
92619
102619
112619
122619
132519
142519
152519
162519
172519
182518
192518
202518
212518
222418
232418
242418
252418
262418
272417
282417
292417
302417

Oristano weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan13° / 668.99.53.9
Feb13° / 608.710.43.8
Mar15° / 558.111.74.9
Apr17° / 11°588.4135.9
May21° / 14°41614.27.3
Jun25° / 18°162.914.88.6
Jul27° / 20°40.914.58.7
Aug28° / 21°81.713.68.0
Sep25° / 19°385.112.38.0
Oct22° / 16°668.210.97.1
Nov18° / 12°10211.49.85.5
Dec14° / 8710.59.24.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% 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 26%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18515
28416
38218
48218
58119
68020
77921
87822
97723
107624
117525
127525
137327
147327
157228
167228
177129
187030
197030
207030
217129
227030
237030
247030
257030
267030
277030
287030
297030
307030

Chance of precipitation in September

Any precipitation

Oristano gets around 38 mm of rain over 5.1 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 18% and peaks near 23% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
19
210
310
411
511
612
713
814
914
1015
1116
1217
1317
1418
1519
1619
1720
1820
1920
2021
2121
2221
2321
2422
2522
2622
2722
2823
2923
3023

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 39% of days. Sticky, muggy-or-worse air turns up on roughly 24% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
122040343
222140343
332240332
432340322
542439312
642440311
742539311
852539301
952539301
1062639290
1162638290
1272738280
1372738270
1482738270
1582837260
1692837251
1792938241
18102938231
19112938211
20113038201
21123038191
22133138181
23133139161
24133239151
25143339141
26143439131
27143538120
28153638110
29153737110
30163836100

Wind in September

Winds average 11 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
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min 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 78 minutes over September. Sunrise moves from 5:58 AM to 6:26 AM, and sunset from 6:53 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:586:53
212.95:596:51
312.86:006:50
412.86:016:48
512.76:026:46
612.76:036:45
712.76:036:43
812.66:046:41
912.66:056:40
1012.56:066:38
1112.56:076:36
1212.46:086:35
1312.46:096:33
1412.36:106:31
1512.36:116:29
1612.36:126:28
1712.26:136:26
1812.26:146:24
1912.16:156:23
2012.16:166:21
2112.06:176:19
2212.06:186:17
2311.96:196:16
2411.96:206:14
2511.96:216:12
2611.86:226:11
2711.86:236:09
2811.76:246:07
2911.76:256:06
3011.66:266:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.02 kWh/m².

For context, solar energy here swings from a low near 1.86 kWh/m² to a high of 7.5 kWh/m² in July across the year — September's 5.02 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.8Bright
35.7Bright
45.7Bright
55.6Bright
65.5Bright
75.5Bright
85.4Bright
95.4Bright
105.3Bright
115.3Bright
125.2Bright
135.1Bright
145.1Bright
155.0Bright
165.0Bright
174.9Bright
184.9Bright
194.8Bright
204.8Bright
214.7Bright
224.7Bright
234.6Bright
244.6Bright
254.5Bright
264.5Bright
274.4Bright
284.4Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Oristano

In seasonPeak

None of Oristano's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Oristano's rainy season runs October–April, 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 Oristano?

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

8.0
Sightseeing
3rd-best month of the year
7.2
Beach & pool
4th-best month of the year

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

What to pack for Oristano in September

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

In September, Oristano sees daytime highs around 25°C and nights near 19°C. Worth packing: light clothes and sun protection. About 5 days see rain.

light clothessun protection

Sea temperature near Oristano 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 25°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 7 to Oct 28 — about 4.7 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov18Cool
Dec16Cool

UV index in Oristano 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 Oristano peaks around July 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 16UV 9Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7Very high
Jun8Very high
Jul9Very high
Aug7Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec1Low
Location & terrain

Where is Oristano?

Oristano sits at 39.9°N, 8.6°E, 9 m above sea level, in Italy. The nearest listed city is Iglesias, 66 km away.

IglesiasAsseminiAlgheroNuoroSestuCarboniaSinnaiMonserrato

Topography around Oristano

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

Within 3 km, the terrain around Oristano has only modest variations in elevation — a maximum elevation change of 23 m around an average of 6 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 627 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,816 m.

The land around Oristano is covered by cropland (38%), grassland (26%) and artificial surfaces (21%) within 3 km, cropland (35%), grassland (23%) and water (22%) within 16 km, and trees (34%), water (28%) and grassland (20%) within 80 km.

3 km
23 m
16 km
627 m
80 km
1,816 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Iglesias 66 km · Assemini 76 km · Alghero 77 km · Nuoro 78 km · Sestu 80 km · Carbonia 82 km · Sinnai 85 km · Monserrato 86 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 Oristano (39.9036°, 8.5926°, elevation 9 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).