Menton weather in September

In September, Menton sees average daytime highs of 21°C and overnight lows near 18°C, with 65 mm of rain across 7.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 51% of the time in September, and the air most often feels humid.

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 Menton's 3rd-clearest and 9th-windiest month. For the whole year in context, see Menton's year-round climate.

Daytime high
21°
4th warmest
Overnight low
18°
10th coldest
Rainfall
65 mm
7.3 wet days
Daylight
12 h 18 min
6:15 AM – 6:33 PM
Cloud cover
43%
3rd clearest
Wind
10 km/h
9th windiest
Solar energy
4.43 kWh/m²
Travel score
7.1
out of 10

Menton is commune in Alpes-Maritimes, France.

Density
2,110/km²
people per km²

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 22°C in the first days to 19°C by the end.

A typical September day in Menton reaches about 21°C in the afternoon and slips back to 18°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 23°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12320
22220
32220
42220
52219
62219
72219
82219
92219
102119
112119
122119
132119
142118
152118
162118
172118
182118
192018
202018
212018
222017
232017
242017
252017
262017
271917
281917
291917
301917

Menton weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 688.12.19.12.4
Feb10° / 577.4210.22.4
Mar12° / 627.21.411.63.4
Apr14° / 11°749.50.513.24.1
May17° / 14°529.2014.55.7
Jun21° / 18°407.5015.27.2
Jul24° / 21°215.4014.98.1
Aug24° / 21°215.1013.88.2
Sep21° / 18°657.3012.37.1
Oct17° / 15°1028.90.110.85.8
Nov14° / 11°12910.10.79.54.0
Dec11° / 878.61.88.82.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% 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 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17822
27723
37723
47723
57624
67624
77624
87426
97327
107327
117228
127228
137129
147030
157030
166931
176931
186832
196832
206832
216733
226733
236634
246634
256535
266436
276436
286436
296238
306238

Chance of precipitation in September

Any precipitation

Menton gets around 65 mm of rain over 7.3 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 24% and peaks near 28% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
120
220
320
421
521
621
722
822
922
1023
1123
1223
1323
1424
1524
1625
1725
1826
1926
2026
2126
2227
2327
2427
2527
2627
2727
2827
2928
3028

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 11% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1112336273
2122436252
3132637232
4132737211
5142838191
6152938181
7162938170
8173038150
9183038150
10183038140
11193038130
12203038120
13213038120
14213037110
15223137100
16233136100
1724323590
1825333480
1926343370
2027353170
2128363060
2229372950
2330382940
2430382840
2531392730
2632402620
2733402520
2834412410
2935412310
3037402210

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 5:58 AM to 6:32 AM, and sunset from 7:01 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:587:01
213.05:597:00
313.06:006:58
412.96:016:56
512.96:036:54
612.86:046:52
712.86:056:50
812.76:066:48
912.76:076:47
1012.66:086:45
1112.66:106:43
1212.56:116:41
1312.56:126:39
1412.46:136:37
1512.36:146:35
1612.36:156:33
1712.26:176:31
1812.26:186:29
1912.16:196:27
2012.16:206:26
2112.06:216:24
2212.06:226:22
2311.96:246:20
2411.96:256:18
2511.86:266:16
2611.86:276:14
2711.76:286:12
2811.76:306:10
2911.66:316:08
3011.66:326:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.43 kWh/m².

For context, solar energy here swings from a low near 1.54 kWh/m² to a high of 6.67 kWh/m² in July across the year — September's 4.43 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
114.7Bright
124.6Bright
134.6Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.1Bright
234.0Bright
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 Menton?

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

7.1
Sightseeing
4th-best month of the year
4.2
Beach & pool
4th-best month of the year

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

What to pack for Menton in September

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

In September, Menton sees daytime highs around 21°C and nights near 18°C. Little to plan around — just the basics. About 7 days see rain.

Sea temperature near Menton 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 19 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 8 to Oct 11 — about 4.1 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
Jul24Refreshing
Aug25Warm
Sep22Refreshing
Oct20Cool
Nov17Cool
Dec15Cool

UV index in Menton 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 Menton 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
Apr7Very high
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Menton 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 Menton is worst in March — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 1816 µg/m³Nov 2110 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb14Moderate
Mar16Moderate
Apr15Moderate
May14Moderate
Jun14Moderate
Jul13Moderate
Aug13Moderate
Sep11Good
Oct12Moderate
Nov10Good
Dec11Good
Location & terrain

Where is Menton?

Menton sits at 43.8°N, 7.5°E, 17 m above sea level, in France. The nearest listed city is Monte Carlo, 7.0 km away.

Topography around Menton

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

Within 3 km, the terrain around Menton has large variations in elevation — a maximum elevation change of 800 m around an average of 95 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,368 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,195 m.

The land around Menton is covered by water (42%) and trees (35%) within 3 km, trees (44%) and water (43%) within 16 km, and trees (47%) and water (32%) within 80 km.

3 km
800 m
16 km
1,368 m
80 km
3,195 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Monte Carlo 7.0 km · Monaco 8.0 km · Ventimiglia 9.0 km · Saint-Roch 18 km · Nice 21 km · Sanremo 22 km · Plaine du Var 26 km · Les Moulins 27 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 Menton (43.7765°, 7.5043°, elevation 17 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).