Montpellier weather in September

In September, Montpellier sees average daytime highs of 23°C and overnight lows near 18°C, with 96 mm of rain across 6.3 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 24°C in the first days to 21°C by the end. The sky is clear or mostly clear about 55% 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 Montpellier's 4th-clearest and 9th-windiest month. For the whole year in context, see Montpellier's year-round climate.

Daytime high
23°
4th warmest
Overnight low
18°
9th coldest
Rainfall
96 mm
6.3 wet days
Daylight
12 h 18 min
6:30 AM – 6:48 PM
Cloud cover
40%
4th clearest
Wind
16 km/h
9th windiest
Solar energy
4.65 kWh/m²
Travel score
7.7
out of 10

Montpellier is city in Hérault, France.

Air quality
Good
PM2.5 8.2 µg/m³ · 2019
Density
4,364/km²
people per km²
Founded
~985 CE

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 24°C in the first days to 21°C by the end.

A typical September day in Montpellier reaches about 23°C in the afternoon and slips back to 18°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 25°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)
12419
22419
32419
42419
52419
62419
72419
82418
92318
102318
112318
122318
132318
142318
152318
162318
172218
182217
192217
202217
212217
222217
232217
242217
252117
262117
272117
282116
292116
302116

Montpellier 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 daysDaylight (hours)Travel score
Jan11° / 718.39.13.0
Feb12° / 425.810.23.4
Mar14° / 46611.64.6
Apr16° / 11°607.313.25.5
May19° / 15°486.214.56.9
Jun23° / 18°253.815.28.2
Jul26° / 20°142.214.98.5
Aug26° / 21°26413.88.2
Sep23° / 18°966.312.37.7
Oct19° / 15°11410.810.86.1
Nov15° / 11°10810.59.54.6
Dec12° / 639.18.83.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 32%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17426
27426
37426
47426
57426
67426
77426
87327
97228
107228
117228
127129
137030
146931
156931
166733
176733
186634
196634
206535
216535
226535
236436
246337
256337
266337
276337
286337
296337
306238

Chance of precipitation in September

Any precipitation

Montpellier gets around 96 mm of rain over 6.3 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 21% and peaks near 27% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
115
216
316
416
517
617
717
818
918
1019
1119
1220
1320
1420
1521
1621
1721
1822
1922
2022
2123
2223
2324
2424
2525
2625
2726
2826
2927
3027

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1262325242
2272226231
3282227221
4282227221
5292228211
6302228200
7302228200
8302228190
9302328190
10312328180
11312427180
12312427170
13322527170
14322526160
15332626160
16332725150
17342725140
18342825130
19352924120
20352924120
21353024110
22353024100
2336312490
2436312580
2537312570
2637312570
2738312560
2839312560
2940302450
3041302450

Wind in September

Winds average 16 km/h in September.

Across September, daily wind ranges from about 15 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2817light breeze
2917light breeze
3017light breeze

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 6:13 AM to 6:46 AM, and sunset from 7:16 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:137:16
213.06:147:14
313.06:157:12
412.96:167:10
512.96:177:08
612.86:187:07
712.86:207:05
812.76:217:03
912.76:227:01
1012.66:236:59
1112.56:246:57
1212.56:256:55
1312.46:276:53
1412.46:286:51
1512.36:296:50
1612.36:306:48
1712.26:316:46
1812.26:326:44
1912.16:336:42
2012.16:356:40
2112.06:366:38
2212.06:376:36
2311.96:386:34
2411.96:396:32
2511.86:416:31
2611.86:426:29
2711.76:436:27
2811.76:446:25
2911.66:456:23
3011.66:466:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.65 kWh/m².

For context, solar energy here swings from a low near 1.56 kWh/m² to a high of 7.17 kWh/m² in July across the year — September's 4.65 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.4Bright
35.4Bright
45.3Bright
55.3Bright
65.2Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
114.9Bright
124.8Bright
134.8Bright
144.7Bright
154.7Bright
164.6Bright
174.5Bright
184.5Bright
194.4Bright
204.4Bright
214.3Bright
224.3Bright
234.2Bright
244.2Bright
254.1Bright
264.0Bright
274.0Moderate
283.9Moderate
293.9Moderate
303.8Moderate
Planning a trip in September

Hazard calendar for Montpellier

In seasonPeak

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

Montpellier'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 Montpellier?

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

7.7
Sightseeing
4th-best month of the year
5.7
Beach & pool
4th-best month of the year

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

What to pack for Montpellier in September

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

In September, Montpellier sees daytime highs around 23°C and nights near 18°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Montpellier in September

The nearest coast averages about 20°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 26 km away) is warmest in August at about 22°C and coldest in February near 12°C.

It's comfortable for a long swim from Jun 26 to Sep 17 — about 2.8 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May16Cool
Jun19Cool
Jul21Refreshing
Aug22Refreshing
Sep20Refreshing
Oct18Cool
Nov16Cool
Dec14Bracing

UV index in Montpellier 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 Montpellier peaks around July 15 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 15UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr6High
May6High
Jun7Very high
Jul9Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Montpellier?

Montpellier sits at 43.6°N, 3.9°E, 55 m above sea level, in France. The nearest listed city is Castelnau-le-Lez, 3.0 km away.

Topography around Montpellier

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

Within 3 km, the terrain around Montpellier has only modest variations in elevation — a maximum elevation change of 84 m around an average of 38 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 300 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,562 m.

The land around Montpellier is covered by artificial surfaces (67%) and trees (30%) within 3 km, trees (35%) within 16 km, and trees (40%) and water (26%) within 80 km.

3 km
84 m
16 km
300 m
80 km
1,562 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Castelnau-le-Lez 3.0 km · Lattes 5.0 km · Mauguio 11 km · Frontignan 21 km · Lunel 22 km · Sète 27 km · Nîmes 46 km · Agde 46 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 Montpellier (43.6109°, 3.8763°, elevation 55 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).