Portogruaro weather in September

In September, Portogruaro sees average daytime highs of 24°C and overnight lows near 16°C, with 144 mm of rain across 10.7 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 21°C by the end. The sky is clear or mostly clear about 44% of the time in September, and the air most often feels humid.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Portogruaro's 3rd-clearest and 6th-windiest month. For the whole year in context, see Portogruaro's year-round climate.

Daytime high
24°
4th warmest
Overnight low
16°
9th coldest
Rainfall
144 mm
10.7 wet days
Daylight
12 h 18 min
5:53 AM – 6:12 PM
Cloud cover
49%
3rd clearest
Wind
8 km/h
6th windiest
Solar energy
3.96 kWh/m²
Travel score
6.8
out of 10

Portogruaro 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 26°C in the first days to 21°C by the end.

A typical September day in Portogruaro reaches about 24°C in the afternoon and slips back to 16°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12618
22618
32618
42518
52517
62517
72517
82517
92517
102417
112417
122416
132416
142416
152416
162316
172316
182316
192316
202315
212315
222215
232215
242215
252215
262215
272215
282114
292114
302114

How September really feels in Portogruaro

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Portogruaro weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 636.918.91.3
Feb / 646.6110.12.1
Mar13° / 798.30.411.64.0
Apr18° / 10°9811.2013.35.5
May22° / 14°11211.6014.76.5
Jun26° / 18°9911.2015.56.6
Jul28° / 20°799.4015.26.3
Aug28° / 20°1029.4013.96.2
Sep24° / 16°14410.7012.36.8
Oct18° / 12°13510.4010.75.8
Nov13° / 14710.40.29.33.4
Dec / 867.60.98.51.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16634
26634
36634
46733
56634
66634
76634
86535
96634
106634
116535
126535
136535
146436
156337
166238
176139
186139
196040
205941
215941
225743
235743
245545
255545
265347
275347
285149
295149
305050

Chance of precipitation in September

Any precipitation

Portogruaro gets around 144 mm of rain over 10.7 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 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
236
336
436
537
637
737
837
937
1037
1137
1237
1337
1437
1536
1636
1736
1836
1936
2036
2136
2236
2336
2436
2536
2636
2737
2838
2938
3039

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1142135272
2152235262
3162335242
4172435232
5182535211
6182536201
7192636191
8202636181
9202636171
10212636161
11222736151
12232736140
13242735130
14252835120
15262934110
16272934100
1728303390
1829313290
1930323180
2031323070
2131332960
2232342860
2333342850
2433352750
2534352640
2635362640
2735362530
2836362530
2937362430
3038352430

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 96 minutes over September. Sunrise moves from 5:34 AM to 6:12 AM, and sunset from 6:42 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:346:42
213.15:366:40
313.05:376:39
413.05:386:37
512.95:396:35
612.95:416:33
712.85:426:31
812.85:436:29
912.75:446:27
1012.65:466:25
1112.65:476:23
1212.55:486:21
1312.55:506:19
1412.45:516:17
1512.45:526:15
1612.35:536:12
1712.35:556:10
1812.25:566:08
1912.25:576:06
2012.15:596:04
2112.06:006:02
2212.06:016:00
2311.96:025:58
2411.96:045:56
2511.86:055:54
2611.86:065:52
2711.76:085:50
2811.76:095:48
2911.66:105:46
3011.56:125:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.96 kWh/m².

For context, solar energy here swings from a low near 1.2 kWh/m² to a high of 6.33 kWh/m² in July across the year — September's 3.96 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.6Bright
44.6Bright
54.5Bright
64.5Bright
74.4Bright
84.4Bright
94.3Bright
104.3Bright
114.2Bright
124.1Bright
134.1Bright
144.0Bright
154.0Moderate
163.9Moderate
173.8Moderate
183.8Moderate
193.7Moderate
203.7Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.4Moderate
263.3Moderate
273.3Moderate
283.2Moderate
293.2Moderate
303.1Moderate
Planning a trip in September

Is September a good time to visit Portogruaro?

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

6.8
Sightseeing
1st-best month of the year
5.4
Beach & pool
4th-best month of the year

September is a reasonable time to visit Portogruaro for sightseeing.

What to pack for Portogruaro in September

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

In September, Portogruaro sees daytime highs around 24°C and nights near 16°C. Worth packing: light clothes and rain gear. About 11 days see rain.

light clothesrain gear

Sea temperature near Portogruaro 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 26°C and coldest in February near 10°C.

It's comfortable for a long swim from May 30 to Oct 9 — about 4.4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb10Bracing
Mar10Bracing
Apr13Bracing
May18Cool
Jun23Refreshing
Jul25Warm
Aug26Warm
Sep23Refreshing
Oct19Cool
Nov16Cool
Dec13Bracing

UV index in Portogruaro in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Portogruaro peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 8Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr7High
May7High
Jun8Very high
Jul8Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Portogruaro in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Portogruaro is worst in March — around 20 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (September, 12 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1819 µg/m³Sep 1612 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb18Moderate
Mar20Moderate
Apr18Moderate
May17Moderate
Jun17Moderate
Jul16Moderate
Aug14Moderate
Sep12Moderate
Oct14Moderate
Nov13Moderate
Dec16Moderate
Location & terrain

Where is Portogruaro?

Portogruaro sits at 45.8°N, 12.8°E, 5 m above sea level, in Italy. The nearest listed city is Pordenone, 24 km away.

Topography around Portogruaro

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

Within 3 km, the terrain around Portogruaro has only modest variations in elevation — a maximum elevation change of 20 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 48 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,582 m.

The land around Portogruaro is covered by cropland (41%), grassland (27%) and artificial surfaces (24%) within 3 km, cropland (60%) and grassland (25%) within 16 km, and trees (31%), water (27%) and cropland (20%) within 80 km.

3 km
20 m
16 km
48 m
80 km
2,582 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Pordenone 24 km · Cordenons 25 km · Oderzo 27 km · San Donà di Piave 27 km · Sacile 32 km · Conegliano 43 km · Udine 44 km · Lancenigo-Villorba 46 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 Portogruaro (45.7807°, 12.8405°, elevation 5 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).