Montevarchi weather in September

In September, Montevarchi sees average daytime highs of 24°C and overnight lows near 13°C, with 91 mm of rain across 9.5 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 3rd-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 47% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Montevarchi's 4th-clearest and 9th-windiest month. For the whole year in context, see Montevarchi's year-round climate.

Daytime high
24°
4th warmest
Overnight low
13°
9th coldest
Rainfall
91 mm
9.5 wet days
Daylight
12 h 18 min
5:59 AM – 6:17 PM
Cloud cover
45%
4th clearest
Wind
7 km/h
9th windiest
Solar energy
4.3 kWh/m²
Travel score
7.0
out of 10

Montevarchi 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 Montevarchi reaches about 24°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 28°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12615
22615
32615
42615
52615
62515
72514
82514
92514
102514
112414
122414
132414
142414
152413
162413
172313
182313
192313
202313
212313
222212
232212
242212
252212
262212
272112
282112
292112
302112

How September really feels in Montevarchi

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.

Montevarchi weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 628.71.89.11.3
Feb / 728.81.710.22.0
Mar13° / 749.51.111.63.7
Apr16° / 8712.30.113.24.9
May21° / 11°7611.1014.56.4
Jun25° / 15°538.2015.27.3
Jul28° / 17°355.7014.97.1
Aug28° / 17°406.9013.86.8
Sep24° / 13°919.5012.37.0
Oct18° / 10°10911.4010.85.8
Nov13° / 12212.10.69.53.2
Dec / 9111.11.48.81.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27723
37723
47624
57525
67426
77327
87228
97129
106931
116832
126832
136634
146535
156436
166337
176238
186139
196139
206139
216040
226040
236040
246040
256040
265941
275941
286040
295941
305941

Chance of precipitation in September

Any precipitation

Montevarchi gets around 91 mm of rain over 9.5 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 33% and peaks near 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
128
228
328
429
529
629
730
830
931
1031
1132
1232
1333
1434
1534
1634
1735
1835
1935
2035
2135
2235
2334
2434
2534
2634
2734
2834
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 (%)
13037303
23238283
33338262
43439242
53640232
63741212
73741201
83841191
93842191
103942181
113941181
124041181
134040181
144140181
154239181
164338181
174437181
184636171
194734171
204933161
215033161
225232151
235431141
245431141
255630131
265730121
275830111
286030100
296030100
30613090

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours 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 84 minutes over September. Sunrise moves from 5:42 AM to 6:16 AM, and sunset from 6:45 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:426:45
213.05:436:43
312.95:446:41
412.95:456:39
512.85:476:38
612.85:486:36
712.75:496:34
812.75:506:32
912.65:516:30
1012.65:526:28
1112.55:536:26
1212.55:556:24
1312.45:566:23
1412.45:576:21
1512.35:586:19
1612.35:596:17
1712.26:006:15
1812.26:026:13
1912.16:036:11
2012.16:046:09
2112.06:056:07
2212.06:066:05
2311.96:076:04
2411.96:096:02
2511.86:106:00
2611.86:115:58
2711.76:125:56
2811.76:135:54
2911.66:145:52
3011.66:165:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.3 kWh/m².

For context, solar energy here swings from a low near 1.36 kWh/m² to a high of 6.86 kWh/m² in July across the year — September's 4.3 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
45.0Bright
54.9Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.5Bright
124.5Bright
134.4Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.0Bright
214.0Moderate
223.9Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Is September a good time to visit Montevarchi?

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

7.0
Sightseeing
3rd-best month of the year
5.6
Beach & pool
4th-best month of the year

September is one of the better times to visit Montevarchi for general sightseeing.

What to pack for Montevarchi in September

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

In September, Montevarchi sees daytime highs around 24°C and nights near 13°C. Worth packing: light clothes and rain gear. About 10 days see rain.

light clothesrain gear

UV index in Montevarchi 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 Montevarchi peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 14UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Montevarchi 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 Montevarchi is worst in March — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 2016 µg/m³Nov 1712 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar17Moderate
Apr16Moderate
May15Moderate
Jun14Moderate
Jul12Good
Aug13Moderate
Sep12Moderate
Oct13Moderate
Nov12Good
Dec12Moderate
Location & terrain

Where is Montevarchi?

Montevarchi sits at 43.5°N, 11.6°E, 144 m above sea level, in Italy. The nearest listed city is San Giovanni Valdarno, 6.0 km away.

Topography around Montevarchi

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

Within 3 km, the terrain around Montevarchi has only modest variations in elevation — a maximum elevation change of 119 m around an average of 174 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,476 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,724 m.

The land around Montevarchi is covered by trees (53%) within 3 km, trees (77%) within 16 km, and trees (71%) within 80 km.

3 km
119 m
16 km
1,476 m
80 km
1,724 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: San Giovanni Valdarno 6.0 km · Arezzo 26 km · Siena 30 km · Poggibonsi 35 km · Campo di Marte 37 km · Colle di Val d'Elsa 38 km · Florence 39 km · Scandicci 40 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 Montevarchi (43.5252°, 11.5724°, elevation 144 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).