San Bonifacio weather in September

In September, San Bonifacio sees average daytime highs of 22°C and overnight lows near 14°C, with 111 mm of rain across 10.4 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 20°C by the end. The sky is clear or mostly clear about 40% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is San Bonifacio's 3rd-clearest and 8th-windiest month. For the whole year in context, see San Bonifacio's year-round climate.

Daytime high
22°
4th warmest
Overnight low
14°
9th coldest
Rainfall
111 mm
10.4 wet days
Daylight
12 h 18 min
6:00 AM – 6:19 PM
Cloud cover
50%
3rd clearest
Wind
6 km/h
8th windiest
Solar energy
3.97 kWh/m²
Travel score
6.7
out of 10

San Bonifacio is chief town of the homonym municipality.

Air quality
Moderate
PM10 31.4 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 25°C in the first days to 20°C by the end.

A typical September day in San Bonifacio reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°C. Set against its neighbours, September runs about 5°C cooler than August and about 6°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12516
22516
32516
42516
52416
62416
72415
82415
92415
102315
112315
122315
132315
142315
152314
162214
172214
182214
192214
202214
212114
222113
232113
242113
252113
262113
272013
282013
292013
302012

How September really feels in San Bonifacio

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.

San Bonifacio weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°566.72.48.90.7
Feb / 6272.410.11.6
Mar13° / 7291.311.63.7
Apr17° / 10313.30.313.24.8
May21° / 13°11913.4014.76.0
Jun25° / 16°10212.8015.46.5
Jul28° / 19°8612.3015.16.2
Aug27° / 18°9912.1013.96.3
Sep22° / 14°11110.4012.36.7
Oct17° / 10°1209.7010.75.4
Nov11° / 1309.90.89.32.8
Dec / 797.72.18.60.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16634
26733
36733
46733
56733
66634
76634
86634
96634
106634
116634
126535
136535
146436
156337
166337
176238
186238
196238
206040
216040
225941
235941
245842
255842
265743
275644
285545
295446
305347

Chance of precipitation in September

Any precipitation

San Bonifacio gets around 111 mm of rain over 10.4 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 36% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
140
240
339
439
538
638
737
837
937
1036
1136
1236
1336
1435
1535
1635
1735
1834
1934
2034
2134
2234
2333
2433
2534
2634
2734
2835
2935
3035

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12631358
22832337
32932327
43133306
53333296
63434275
73534265
83634254
93734254
103835244
113935233
124035223
134135223
144235212
154335202
164535192
174634181
184834171
194934161
205133151
215233150
225333140
235433130
245732110
255732110
265832100
27603190
28613180
29623170
30633070

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 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 90 minutes over September. Sunrise moves from 5:41 AM to 6:18 AM, and sunset from 6:48 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:416:48
213.15:426:46
313.05:446:44
413.05:456:42
512.95:466:40
612.95:476:39
712.85:496:37
812.75:506:35
912.75:516:33
1012.65:526:31
1112.65:546:29
1212.55:556:27
1312.55:566:25
1412.45:576:23
1512.45:596:21
1612.36:006:19
1712.36:016:17
1812.26:026:15
1912.16:046:13
2012.16:056:11
2112.06:066:09
2212.06:076:07
2311.96:096:05
2411.96:106:03
2511.86:116:01
2611.86:135:59
2711.76:145:57
2811.76:155:55
2911.66:165:53
3011.66:185:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.97 kWh/m².

For context, solar energy here swings from a low near 1.3 kWh/m² to a high of 6.19 kWh/m² in July across the year — September's 3.97 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.1Bright
134.1Bright
144.0Bright
154.0Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.7Moderate
213.7Moderate
223.6Moderate
233.6Moderate
243.5Moderate
253.5Moderate
263.4Moderate
273.4Moderate
283.3Moderate
293.3Moderate
303.2Moderate
Planning a trip in September

Is September a good time to visit San Bonifacio?

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

6.7
Sightseeing
1st-best month of the year
4.8
Beach & pool
4th-best month of the year

September is a reasonable time to visit San Bonifacio for sightseeing.

What to pack for San Bonifacio in September

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

In September, San Bonifacio sees daytime highs around 22°C and nights near 14°C. Worth packing: light clothes and rain gear. About 10 days see rain.

light clothesrain gear

UV index in San Bonifacio 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 San Bonifacio peaks around July 13 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 13UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr7High
May7High
Jun8Very high
Jul8Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in San Bonifacio 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 San Bonifacio is worst in January — around 26 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (September, 16 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJan 1725 µg/m³Sep 1316 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb23Moderate
Mar25Moderate
Apr23Moderate
May19Moderate
Jun20Moderate
Jul18Moderate
Aug16Moderate
Sep16Moderate
Oct17Moderate
Nov18Moderate
Dec22Moderate
Location & terrain

Where is San Bonifacio?

San Bonifacio sits at 45.4°N, 11.3°E, 31 m above sea level, in Italy. The nearest listed city is Arzignano, 15 km away.

Topography around San Bonifacio

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

Within 3 km, the terrain around San Bonifacio has only modest variations in elevation — a maximum elevation change of 144 m around an average of 32 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 667 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,362 m.

The land around San Bonifacio is covered by grassland (47%) and artificial surfaces (26%) within 3 km, cropland (34%), grassland (31%) and trees (23%) within 16 km, and cropland (43%) and trees (27%) within 80 km.

3 km
144 m
16 km
667 m
80 km
2,362 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Arzignano 15 km · Montecchio Maggiore-Alte Ceccato 16 km · San Giovanni Lupatoto 18 km · Verona 22 km · Legnago 23 km · Vicenza 27 km · Valdagno 28 km · Bussolengo 34 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 San Bonifacio (45.3959°, 11.2735°, elevation 31 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. 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).