Pietrasanta weather in September

In September, Pietrasanta sees average daytime highs of 21°C and overnight lows near 17°C, with 125 mm of rain across 10.2 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 23°C in the first days to 19°C by the end. The sky is clear or mostly clear about 49% of the time in September, and the air most often feels comfortable.

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 Pietrasanta's 3rd-clearest and 8th-windiest month. For the whole year in context, see Pietrasanta's year-round climate.

Daytime high
21°
4th warmest
Overnight low
17°
9th coldest
Rainfall
125 mm
10.2 wet days
Daylight
12 h 18 min
6:04 AM – 6:22 PM
Cloud cover
43%
3rd clearest
Wind
8 km/h
8th windiest
Solar energy
4.4 kWh/m²
Travel score
6.7
out of 10

Pietrasanta 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 23°C in the first days to 19°C by the end.

A typical September day in Pietrasanta reaches about 21°C in the afternoon and slips back to 17°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 24°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12319
22318
32318
42318
52318
62218
72218
82218
92218
102217
112217
122217
132217
142117
152117
162117
172117
182117
192116
202116
212016
222016
232016
242016
252016
262016
272016
282015
291915
301915

Pietrasanta 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 / 12311.919.11.6
Feb / 11510.71.310.21.8
Mar11° / 11511.20.711.62.9
Apr14° / 10°119130.113.23.9
May18° / 14°9211.7014.55.6
Jun21° / 17°759.5015.26.9
Jul24° / 20°457.1014.98.0
Aug24° / 20°457.3013.87.9
Sep21° / 17°12510.2012.36.7
Oct17° / 14°19813.2010.85.3
Nov13° / 10°206140.39.43.2
Dec10° / 16912.818.82.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28119
38119
47921
57921
67822
77723
87624
97525
107426
117327
127228
137030
147030
156931
166832
176733
186634
196634
206535
216535
226436
236436
246436
256238
266238
276139
286040
295941
305842

Chance of precipitation in September

Any precipitation

Pietrasanta gets around 125 mm of rain over 10.2 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 35% and peaks near 42% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
130
230
330
430
530
630
730
831
931
1032
1132
1233
1334
1434
1535
1636
1736
1837
1938
2038
2138
2239
2339
2439
2540
2640
2741
2841
2942
3042

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
114244121
215254119
315264117
416274115
517294113
618304112
718314111
81931409
92032408
102032407
112133407
122233396
132333396
142433385
152434375
162534365
172735344
182835334
192936324
203036303
213137293
223238272
233339262
243440242
253441232
263542211
273643201
283744191
293844171
303944161

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 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 5:47 AM to 6:21 AM, and sunset from 6:51 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:476:51
213.05:486:49
313.05:496:47
412.95:506:45
512.95:526:43
612.85:536:41
712.85:546:40
812.75:556:38
912.75:566:36
1012.65:576:34
1112.65:596:32
1212.56:006:30
1312.56:016:28
1412.46:026:26
1512.36:036:24
1612.36:046:22
1712.26:066:20
1812.26:076:19
1912.16:086:17
2012.16:096:15
2112.06:106:13
2212.06:126:11
2311.96:136:09
2411.96:146:07
2511.86:156:05
2611.86:166:03
2711.76:186:01
2811.76:195:59
2911.66:205:57
3011.66:215:56

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.4 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 4.4 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.1Bright
35.1Bright
45.0Bright
55.0Bright
64.9Bright
74.9Bright
84.8Bright
94.8Bright
104.7Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.4Bright
164.3Bright
174.3Bright
184.2Bright
194.2Bright
204.1Bright
214.0Bright
224.0Moderate
233.9Moderate
243.9Moderate
253.8Moderate
263.8Moderate
273.7Moderate
283.7Moderate
293.6Moderate
303.5Moderate
Planning a trip in September

Is September a good time to visit Pietrasanta?

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

6.7
Sightseeing
4th-best month of the year
4.2
Beach & pool
4th-best month of the year

September is a reasonable time to visit Pietrasanta for sightseeing.

What to pack for Pietrasanta in September

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

In September, Pietrasanta sees daytime highs around 21°C and nights near 17°C. Worth packing: rain gear. About 10 days see rain.

rain gear

Sea temperature near Pietrasanta 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 offshore is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 1 to Oct 20 — about 4.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug25Warm
Sep23Refreshing
Oct20Refreshing
Nov18Cool
Dec16Cool

UV index in Pietrasanta 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 Pietrasanta peaks around July 13 at about 9 (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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 13UV 9Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Pietrasanta 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 Pietrasanta is worst in March — around 18 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1918 µg/m³Sep 1113 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb15Moderate
Mar18Moderate
Apr17Moderate
May16Moderate
Jun15Moderate
Jul13Moderate
Aug14Moderate
Sep13Moderate
Oct14Moderate
Nov13Moderate
Dec14Moderate
Location & terrain

Where is Pietrasanta?

Pietrasanta sits at 44.0°N, 10.2°E, 14 m above sea level, in Italy. The nearest listed city is Camaiore, 6.0 km away.

Topography around Pietrasanta

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

Within 3 km, the terrain around Pietrasanta has large variations in elevation — a maximum elevation change of 774 m around an average of 110 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,818 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,129 m.

The land around Pietrasanta is covered by trees (62%) within 3 km, trees (50%) and water (31%) within 16 km, and trees (52%) and water (30%) within 80 km.

3 km
774 m
16 km
1,818 m
80 km
2,129 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Camaiore 6.0 km · Viareggio 10 km · Marina di Massa 11 km · Massa 11 km · Massarosa 14 km · Carrara 17 km · Marina di Carrara 17 km · Lucca 26 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 Pietrasanta (43.9595°, 10.2278°, elevation 14 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).