Saint-Tropez weather in September

In September, Saint-Tropez sees average daytime highs of 23°C and overnight lows near 20°C, with 58 mm of rain across 5.6 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 59% of the time in September, and the air most often feels humid.

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 Saint-Tropez's 4th-clearest and 8th-windiest month. For the whole year in context, see Saint-Tropez's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
20°
10th coldest
Rainfall
58 mm
5.6 wet days
Daylight
12 h 18 min
6:19 AM – 6:36 PM
Cloud cover
38%
4th clearest
Wind
14 km/h
8th windiest
Solar energy
4.69 kWh/m²
Travel score
7.9
out of 10

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 22°C by the end.

A typical September day in Saint-Tropez reaches about 23°C in the afternoon and slips back to 20°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 25°C. Set against its neighbours, September runs about 3°C cooler than August and about 3°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12522
22521
32521
42421
52421
62421
72421
82421
92421
102421
112420
122320
132320
142320
152320
162320
172320
182320
192319
202319
212219
222219
232219
242219
252219
262219
272219
282219
292218
302218

Saint-Tropez weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 717.39.23.5
Feb12° / 546.410.23.7
Mar14° / 10°495.911.64.6
Apr16° / 12°596.713.25.4
May19° / 16°425.614.57.0
Jun23° / 20°263.215.18.3
Jul26° / 22°101.614.98.8
Aug26° / 23°182.713.88.4
Sep23° / 20°585.612.37.9
Oct20° / 17°998.210.86.7
Nov16° / 13°12610.49.55.0
Dec13° / 10°898.48.94.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27921
37822
47723
57723
67624
77624
87525
97426
107426
117327
127327
137228
147228
157129
167129
177228
187228
197129
207129
217129
227030
237030
247030
257030
266931
276931
286931
296832
306832

Chance of precipitation in September

Any precipitation

Saint-Tropez gets around 58 mm of rain over 5.6 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 18% and peaks near 22% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
112
212
313
413
513
614
715
815
916
1017
1117
1218
1319
1419
1520
1621
1721
1822
1922
2022
2122
2222
2322
2421
2521
2621
2721
2820
2920
3020

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 27% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1718233913
2718243911
3818253810
481926389
591928378
691929376
7101930366
8111931355
9111932344
10122032333
11122033323
12132034313
13132134292
14142135282
15142236262
16152336252
17152337231
18162338211
19172439191
20172440171
21182441161
22182542141
23182543131
24192544121
25202445110
26202446100
2721244690
2822244580
2923244580
3024244480

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

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 6:02 AM to 6:35 AM, and sunset from 7:04 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:027:04
213.06:037:03
312.96:047:01
412.96:056:59
512.86:076:57
612.86:086:55
712.76:096:53
812.76:106:52
912.66:116:50
1012.66:126:48
1112.56:136:46
1212.56:146:44
1312.46:166:42
1412.46:176:40
1512.36:186:38
1612.36:196:36
1712.26:206:35
1812.26:216:33
1912.16:226:31
2012.16:246:29
2112.06:256:27
2212.06:266:25
2311.96:276:23
2411.96:286:21
2511.86:296:20
2611.86:316:18
2711.76:326:16
2811.76:336:14
2911.66:346:12
3011.66:356:10

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.69 kWh/m².

For context, solar energy here swings from a low near 1.59 kWh/m² to a high of 7.21 kWh/m² in July across the year — September's 4.69 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.1Bright
95.0Bright
105.0Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.6Bright
184.5Bright
194.5Bright
204.4Bright
214.4Bright
224.3Bright
234.3Bright
244.2Bright
254.2Bright
264.1Bright
274.1Bright
284.0Bright
294.0Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Saint-Tropez

In seasonPeak

In September, Saint-Tropez sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Saint-Tropez's rainy season runs April–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Saint-Tropez?

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

7.9
Sightseeing
4th-best month of the year
6.1
Beach & pool
4th-best month of the year

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

What to pack for Saint-Tropez in September

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

In September, Saint-Tropez sees daytime highs around 23°C and nights near 20°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Saint-Tropez in September

The nearest coast averages about 22°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 16 km away) is warmest in August at about 24°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 11 to Oct 8 — about 3.9 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul23Refreshing
Aug24Warm
Sep22Refreshing
Oct19Cool
Nov17Cool
Dec15Bracing

UV index in Saint-Tropez 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 Saint-Tropez 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
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Saint-Tropez 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 Saint-Tropez 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).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1617 µg/m³Nov 1512 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb16Moderate
Mar17Moderate
Apr16Moderate
May15Moderate
Jun15Moderate
Jul14Moderate
Aug15Moderate
Sep13Moderate
Oct13Moderate
Nov12Moderate
Dec14Moderate
Location & terrain

Where is Saint-Tropez?

Saint-Tropez sits at 43.3°N, 6.6°E, 0 m above sea level, in France. The nearest listed city is Fréjus, 20 km away.

Topography around Saint-Tropez

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

Within 3 km, the terrain around Saint-Tropez has only modest variations in elevation — a maximum elevation change of 166 m around an average of 23 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 630 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,906 m.

The land around Saint-Tropez is covered by water (48%) and trees (33%) within 3 km, water (48%) and trees (34%) within 16 km, and trees (46%) and water (40%) within 80 km.

3 km
166 m
16 km
630 m
80 km
1,906 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Fréjus 20 km · Saint-Raphaël 20 km · Draguignan 33 km · Mandelieu-la-Napoule 39 km · Cannes 44 km · Hyères 45 km · Le Cannet 46 km · Mougins 47 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 Saint-Tropez (43.2676°, 6.6405°, elevation 0 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).