Les Herbiers weather in September

In September, Les Herbiers sees average daytime highs of 22°C and overnight lows near 12°C, with 54 mm of rain across 7.9 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 20°C by the end. The sky is clear or mostly clear about 27% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 12 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Les Herbiers's 3rd-clearest and 10th-windiest month. For the whole year in context, see Les Herbiers's year-round climate.

Daytime high
22°
4th warmest
Overnight low
12°
9th coldest
Rainfall
54 mm
7.9 wet days
Daylight
12 h 18 min
6:48 AM – 7:08 PM
Cloud cover
57%
3rd clearest
Wind
12 km/h
10th windiest
Solar energy
3.97 kWh/m²
Travel score
6.8
out of 10

Les Herbiers is human settlement in France.

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 23°C in the first days to 20°C by the end.

A typical September day in Les Herbiers reaches about 22°C in the afternoon and slips back to 12°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 27°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12313
22313
32313
42313
52313
62313
72313
82312
92312
102212
112212
122212
132212
142212
152212
162212
172112
182111
192111
202111
212111
222111
232011
242011
252011
262011
272011
282011
292011
301911

How September really feels in Les Herbiers

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.

Les Herbiers weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7911.90.68.81.5
Feb10° / 63100.6102.0
Mar13° / 5810.50.111.63.4
Apr15° / 6211.1013.34.5
May19° / 10°6911.3014.85.8
Jun22° / 13°509.3015.66.7
Jul25° / 14°417.6015.37.3
Aug25° / 14°467.70147.3
Sep22° / 12°547.9012.46.8
Oct17° / 7911.7010.65.1
Nov12° / 8012.209.22.9
Dec / 8611.90.18.41.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% 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 53%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15149
25149
35149
45149
55149
65149
75050
85050
95050
104951
114852
124852
134852
144852
154852
164852
174753
184654
194654
204555
214555
224456
234357
244357
254258
264159
274159
284060
293961
303862

Chance of precipitation in September

Any precipitation

Les Herbiers gets around 54 mm of rain over 7.9 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 27% and peaks near 34% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
122
222
322
422
522
622
723
823
924
1024
1124
1225
1326
1426
1527
1627
1728
1828
1929
2029
2130
2230
2331
2431
2532
2632
2733
2833
2934
3034

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 62% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15331142
25431132
35531122
45631121
55830111
65830111
75930101
85930101
95930101
10613090
11613090
12622990
13632980
14632980
15632980
16642970
17642970
18652960
19652960
20652960
21662950
22662950
23662950
24662950
25662950
26662950
27662950
28662950
29662950
30672850

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 12 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 102 minutes over September. Sunrise moves from 6:28 AM to 7:08 AM, and sunset from 7:39 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.26:287:39
213.16:307:37
313.16:317:35
413.06:327:33
513.06:347:31
612.96:357:29
712.86:367:27
812.86:387:25
912.76:397:23
1012.76:407:21
1112.66:427:19
1212.66:437:17
1312.56:447:15
1412.46:467:12
1512.46:477:10
1612.36:487:08
1712.36:507:06
1812.26:517:04
1912.26:537:02
2012.16:547:00
2112.06:556:58
2212.06:576:56
2311.96:586:54
2411.96:596:52
2511.87:016:49
2611.87:026:47
2711.77:036:45
2811.67:056:43
2911.67:066:41
3011.57:086:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.97 kWh/m².

For context, solar energy here swings from a low near 1.02 kWh/m² to a high of 6.02 kWh/m² in June across the year — September's 3.97 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.5Bright
74.4Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.1Bright
134.1Bright
144.0Bright
154.0Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.7Moderate
213.7Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.4Moderate
263.4Moderate
273.3Moderate
283.2Moderate
293.2Moderate
303.1Moderate
Planning a trip in September

Is September a good time to visit Les Herbiers?

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

6.8
Sightseeing
3rd-best month of the year
4.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Les Herbiers for sightseeing.

What to pack for Les Herbiers in September

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

In September, Les Herbiers sees daytime highs around 22°C and nights near 12°C. Little to plan around — just the basics. About 8 days see rain.

Sea temperature near Les Herbiers in September

The nearest coast averages about 18°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 62 km away) is warmest in August at about 20°C and coldest in February near 10°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan10Bracing
Feb10Bracing
Mar10Bracing
Apr12Bracing
May15Bracing
Jun17Cool
Jul19Cool
Aug20Cool
Sep18Cool
Oct17Cool
Nov14Bracing
Dec12Bracing

UV index in Les Herbiers 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 Les Herbiers peaks around July 20 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 20UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May6High
Jun7High
Jul7Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Les Herbiers?

Les Herbiers sits at 46.9°N, 1.0°W, 108 m above sea level, in France. The nearest listed city is Cholet, 23 km away.

Topography around Les Herbiers

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

Within 3 km, the terrain around Les Herbiers has only modest variations in elevation — a maximum elevation change of 151 m around an average of 127 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 271 m; within 80 km, significant variations in elevation — a maximum elevation change of 339 m.

The land around Les Herbiers is covered by grassland (40%), artificial surfaces (21%) and cropland (20%) within 3 km, cropland (42%) and grassland (37%) within 16 km, and cropland (44%) and grassland (31%) within 80 km.

3 km
151 m
16 km
271 m
80 km
339 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Cholet 23 km · La Roche-sur-Yon 39 km · Bressuire 40 km · Fontenay-le-Comte 48 km · Vertou 48 km · Saint-Sébastien-sur-Loire 53 km · Rezé 55 km · Nantes 56 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 Les Herbiers (46.871°, -1.0156°, elevation 108 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).