Grasse weather in September

In September, Grasse sees average daytime highs of 22°C and overnight lows near 14°C, with 87 mm of rain across 9.2 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 24°C in the first days to 20°C by the end. The sky is clear or mostly clear about 44% 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 Grasse's 3rd-clearest and 9th-windiest month. For the whole year in context, see Grasse's year-round climate.

Daytime high
22°
4th warmest
Overnight low
14°
9th coldest
Rainfall
87 mm
9.2 wet days
Daylight
12 h 18 min
6:18 AM – 6:35 PM
Cloud cover
47%
3rd clearest
Wind
6 km/h
9th windiest
Solar energy
4.45 kWh/m²
Travel score
6.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 20°C by the end.

A typical September day in Grasse 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 19°C and 25°C. Set against its neighbours, September runs about 4°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12416
22415
32415
42315
52315
62315
72315
82315
92315
102314
112214
122214
132214
142214
152214
162214
172214
182214
192113
202113
212113
222113
232113
242113
252113
262013
272013
282012
292012
302012

How September really feels in Grasse

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.

Grasse 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
Jan10° / 697.43.49.12.2
Feb10° / 637.83.710.22.5
Mar13° / 678.62.311.63.8
Apr15° / 8912.21.213.24.4
May19° / 11°7712.20.114.55.8
Jun23° / 14°6210.1015.27.0
Jul25° / 17°367.6014.97.6
Aug25° / 17°408.1013.87.5
Sep22° / 14°879.2012.36.9
Oct18° / 10°1249.80.210.85.8
Nov13° / 13810.51.79.53.7
Dec10° / 858.53.18.82.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17426
27426
37327
47327
57228
67228
77228
87129
97030
106931
116931
126733
136733
146634
156535
166535
176436
186337
196238
206139
216139
225941
235941
245941
255743
265743
275644
285644
295545
305545

Chance of precipitation in September

Any precipitation

Grasse gets around 87 mm of rain over 9.2 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 31% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
131
231
331
431
531
630
730
830
930
1030
1130
1230
1330
1430
1531
1631
1731
1832
1932
2032
2132
2232
2332
2432
2532
2631
2731
2831
2931
3031

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 41% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
124313610
22632348
32733337
42933326
53034315
63134304
73334303
83435293
93535282
103635272
113735272
123835262
133935251
144035241
154135231
164235221
174335211
184436191
194636181
204736161
214836151
224937130
235038120
245138110
25523990
26533980
27534070
28544060
29563950
30573940

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 6:00 AM to 6:34 AM, and sunset from 7:04 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:007:04
213.06:027:02
313.06:037:00
412.96:046:58
512.96:056:56
612.86:066:54
712.86:076:53
812.76:086:51
912.76:106:49
1012.66:116:47
1112.66:126:45
1212.56:136:43
1312.46:146:41
1412.46:156:39
1512.36:176:37
1612.36:186:35
1712.26:196:34
1812.26:206:32
1912.16:216:30
2012.16:226:28
2112.06:246:26
2212.06:256:24
2311.96:266:22
2411.96:276:20
2511.86:286:18
2611.86:306:16
2711.76:316:15
2811.76:326:13
2911.66:336:11
3011.66:346:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.45 kWh/m².

For context, solar energy here swings from a low near 1.58 kWh/m² to a high of 6.77 kWh/m² in July across the year — September's 4.45 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.1Bright
45.1Bright
55.0Bright
65.0Bright
74.9Bright
84.8Bright
94.8Bright
104.7Bright
114.7Bright
124.6Bright
134.6Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.1Bright
234.1Bright
244.0Bright
254.0Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.7Moderate
Planning a trip in September

Is September a good time to visit Grasse?

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

6.9
Sightseeing
4th-best month of the year
4.7
Beach & pool
4th-best month of the year

September is a reasonable time to visit Grasse for sightseeing.

What to pack for Grasse in September

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

In September, Grasse sees daytime highs around 22°C and nights near 14°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Grasse 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 at the nearest coast (about 16 km away) is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Oct 16 — about 4.3 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr15Bracing
May18Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep23Refreshing
Oct20Refreshing
Nov18Cool
Dec16Cool

UV index in Grasse 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 Grasse peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 15UV 9Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr7High
May7High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Grasse 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 Grasse 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 Grasse?

Grasse sits at 43.7°N, 6.9°E, 308 m above sea level, in France. The nearest listed city is Mougins, 8.0 km away.

Topography around Grasse

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

Within 3 km, the terrain around Grasse has large variations in elevation — a maximum elevation change of 863 m around an average of 367 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,638 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,150 m.

The land around Grasse is covered by trees (69%) and artificial surfaces (22%) within 3 km, trees (67%) within 16 km, and trees (53%) and water (26%) within 80 km.

3 km
863 m
16 km
1,638 m
80 km
3,150 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Mougins 8.0 km · Le Cannet 12 km · Mandelieu-la-Napoule 12 km · Vallauris 14 km · Cannes 14 km · Vence 17 km · Cagnes-sur-Mer 18 km · Juan-les-Pins 18 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 Grasse (43.6578°, 6.9254°, elevation 308 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).