Gardanne weather in September

In September, Gardanne sees average daytime highs of 25°C and overnight lows near 14°C, with 72 mm of rain across 6.9 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 27°C in the first days to 22°C by the end. The sky is clear or mostly clear about 56% 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 Gardanne's 4th-clearest and 11th-windiest month. For the whole year in context, see Gardanne's year-round climate.

Daytime high
25°
4th warmest
Overnight low
14°
9th coldest
Rainfall
72 mm
6.9 wet days
Daylight
12 h 18 min
6:24 AM – 6:41 PM
Cloud cover
39%
4th clearest
Wind
11 km/h
11th windiest
Solar energy
4.78 kWh/m²
Travel score
7.6
out of 10
Air quality
Moderate
PM2.5 11.9 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 27°C in the first days to 22°C by the end.

A typical September day in Gardanne reaches about 25°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 28°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12716
22716
32716
42616
52615
62615
72615
82615
92615
102515
112515
122515
132515
142514
152514
162414
172414
182414
192414
202414
212414
222313
232313
242313
252313
262313
272313
282213
292213
302213

How September really feels in Gardanne

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.

Gardanne 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
Jan11° / 547.10.79.12.8
Feb12° / 4460.710.23.4
Mar15° / 446.40.111.65.2
Apr18° / 689013.26.0
May22° / 12°587.6014.57.1
Jun26° / 16°355.1015.27.7
Jul29° / 18°193.3014.96.9
Aug29° / 18°233.8013.86.9
Sep25° / 14°726.9012.37.6
Oct20° / 11°888.6010.86.6
Nov14° / 1009.60.29.54.4
Dec11° / 607.20.48.83.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 29%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17723
27723
37723
47723
57624
67624
77624
87525
97525
107525
117426
127426
137426
147228
157228
167129
177129
187129
197030
207030
216931
226832
236733
246733
256733
266634
276535
286535
296535
306436

Chance of precipitation in September

Any precipitation

Gardanne gets around 72 mm of rain over 6.9 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 23% and peaks near 26% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
117
217
318
418
519
619
720
820
921
1021
1122
1223
1323
1424
1524
1625
1725
1825
1925
2026
2126
2226
2326
2426
2526
2626
2726
2826
2926
3026

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 49% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14126267
24126257
34227256
44327246
54327245
64428235
74428234
84528234
94528233
104529233
114529233
124628233
134628232
144728232
154728232
164829221
174829211
184929211
195029201
205030191
215230171
225231161
235331151
245431141
255432131
265532130
275632120
285633110
295733100
305832100

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 6:06 AM to 6:40 AM, and sunset from 7:09 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:067:09
213.06:087:07
312.96:097:06
412.96:107:04
512.86:117:02
612.86:127:00
712.76:136:58
812.76:146:56
912.66:166:54
1012.66:176:53
1112.56:186:51
1212.56:196:49
1312.46:206:47
1412.46:216:45
1512.36:236:43
1612.36:246:41
1712.26:256:39
1812.26:266:37
1912.16:276:36
2012.16:286:34
2112.06:296:32
2212.06:316:30
2311.96:326:28
2411.96:336:26
2511.86:346:24
2611.86:356:22
2711.76:366:20
2811.76:386:19
2911.66:396:17
3011.66:406:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.78 kWh/m².

For context, solar energy here swings from a low near 1.62 kWh/m² to a high of 7.34 kWh/m² in July across the year — September's 4.78 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.5Bright
45.5Bright
55.4Bright
65.3Bright
75.3Bright
85.2Bright
95.2Bright
105.1Bright
115.0Bright
125.0Bright
134.9Bright
144.8Bright
154.8Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.4Bright
234.3Bright
244.3Bright
254.2Bright
264.2Bright
274.1Bright
284.1Bright
294.0Bright
304.0Moderate
Planning a trip in September

Is September a good time to visit Gardanne?

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

7.6
Sightseeing
2nd-best month of the year
6.6
Beach & pool
4th-best month of the year

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

What to pack for Gardanne in September

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

In September, Gardanne sees daytime highs around 25°C and nights near 14°C. Worth packing: light clothes and sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Gardanne in September

The nearest coast averages about 21°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 22°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 29 to Sep 30 — about 3.1 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May16Cool
Jun19Cool
Jul21Refreshing
Aug22Refreshing
Sep21Refreshing
Oct19Cool
Nov17Cool
Dec15Bracing

UV index in Gardanne 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 Gardanne peaks around July 16 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 16UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Gardanne?

Gardanne sits at 43.5°N, 5.5°E, 216 m above sea level, in France. The nearest listed city is Aix-en-Provence, 8.0 km away.

Topography around Gardanne

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

Within 3 km, the terrain around Gardanne has only modest variations in elevation — a maximum elevation change of 196 m around an average of 248 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,008 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,815 m.

The land around Gardanne is covered by trees (51%) and artificial surfaces (26%) within 3 km, trees (52%) within 16 km, and trees (46%) and water (29%) within 80 km.

3 km
196 m
16 km
1,008 m
80 km
1,815 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Aix-en-Provence 8.0 km · Marseille 15 13 km · Allauch 13 km · Les Pennes-Mirabeau 14 km · Marseille 14 14 km · Les Olives 15 km · Saint-Barthélémy 15 km · Marseille 16 15 km

France travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 77% of US
price level, 2025
GDP per capita
$48,986
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.3
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 539
Religion
Roman Catholic 47%none 33%Muslim 4%Protestant 2%

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 Gardanne (43.4549°, 5.4691°, elevation 216 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).