Sassari weather in September

In September, Sassari sees average daytime highs of 24°C and overnight lows near 19°C, with 43 mm of rain across 6.1 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 26°C in the first days to 23°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 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 Sassari's 4th-clearest and 8th-windiest month. For the whole year in context, see Sassari's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
43 mm
6.1 wet days
Daylight
12 h 18 min
6:12 AM – 6:28 PM
Cloud cover
38%
4th clearest
Wind
13 km/h
8th windiest
Solar energy
5.01 kWh/m²
Travel score
7.9
out of 10
Air quality
Good
PM2.5 5.8 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 26°C in the first days to 23°C by the end.

A typical September day in Sassari reaches about 24°C in the afternoon and slips back to 19°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 27°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)
12620
22620
32620
42620
52620
62520
72520
82520
92519
102519
112519
122519
132519
142419
152419
162419
172419
182418
192418
202418
212418
222318
232318
242318
252318
262318
272317
282317
292317
302317

Sassari 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
Jan12° / 5699.43.5
Feb12° / 538.710.43.4
Mar14° / 548.411.74.5
Apr16° / 11°60913.15.5
May20° / 14°466.414.27.1
Jun24° / 18°223.514.98.6
Jul27° / 21°71.314.68.8
Aug27° / 21°102.113.68.5
Sep24° / 19°436.112.37.9
Oct21° / 16°718.810.96.9
Nov17° / 12°9611.89.75.1
Dec14° / 7610.79.13.9

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 16% 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 (%)
18416
28416
38317
48218
58119
68020
77921
87921
97723
107624
117624
127525
137426
147327
157327
167228
177129
187129
197129
207030
217030
227030
237030
247030
257030
266931
276931
286931
296931
306832

Chance of precipitation in September

Any precipitation

Sassari gets around 43 mm of rain over 6.1 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 21% and peaks near 27% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
111
212
312
413
514
615
716
816
917
1018
1119
1219
1320
1421
1521
1622
1723
1823
1924
2024
2124
2225
2325
2425
2525
2626
2726
2826
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 21% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
152240312
252340301
362440291
462540281
562640281
672639271
772740270
882739260
982739260
1092738250
11102838250
12102837240
13112937240
14122936230
15123036230
16133035220
17133135210
18143234200
19153234190
20153334180
21163433170
22173533160
23173533140
24173633130
25173733120
26183833110
27183833110
28183933100
2919393390
3020403380

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112light 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
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light 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 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 5:57 AM to 6:27 AM, and sunset from 6:54 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:576:54
212.95:586:52
312.95:596:51
412.86:006:49
512.86:016:47
612.76:026:46
712.76:036:44
812.66:046:42
912.66:056:40
1012.56:066:39
1112.56:076:37
1212.56:086:35
1312.46:096:33
1412.46:106:32
1512.36:116:30
1612.36:126:28
1712.26:136:26
1812.26:146:25
1912.16:156:23
2012.16:166:21
2112.06:176:19
2212.06:186:18
2311.96:196:16
2411.96:206:14
2511.86:216:12
2611.86:226:11
2711.86:236:09
2811.76:246:07
2911.76:256:05
3011.66:276:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.01 kWh/m².

For context, solar energy here swings from a low near 1.81 kWh/m² to a high of 7.49 kWh/m² in July across the year — September's 5.01 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
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
184.8Bright
194.8Bright
204.8Bright
214.7Bright
224.7Bright
234.6Bright
244.5Bright
254.5Bright
264.5Bright
274.4Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Sassari

In seasonPeak

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

Sassari's rainy season runs October–May, 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 Sassari?

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

7.9
Sightseeing
4th-best month of the year
6.7
Beach & pool
4th-best month of the year

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

What to pack for Sassari in September

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

In September, Sassari sees daytime highs around 24°C and nights near 19°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Sassari 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 18 km away) is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 9 to Oct 24 — about 4.5 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov18Cool
Dec15Cool

UV index in Sassari 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 Sassari peaks around July 14 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 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 14UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr5Moderate
May7High
Jun8Very high
Jul9Very high
Aug7Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Sassari?

Sassari sits at 40.7°N, 8.6°E, 225 m above sea level, in Italy. The nearest listed city is Monte Rosello, 1.0 km away.

NuoroOlbiaOristanoAjaccioIglesias

Topography around Sassari

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

Within 3 km, the terrain around Sassari has significant variations in elevation — a maximum elevation change of 263 m around an average of 197 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 754 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,336 m.

The land around Sassari is covered by trees (44%) and artificial surfaces (40%) within 3 km, grassland (38%) and trees (33%) within 16 km, and water (46%) and trees (25%) within 80 km.

3 km
263 m
16 km
754 m
80 km
1,336 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Monte Rosello 1.0 km · Porto Torres 17 km · Alghero 27 km · Nuoro 79 km · Olbia 82 km · Oristano 91 km · Ajaccio 134 km · Iglesias 158 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 Sassari (40.7259°, 8.5555°, elevation 225 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).