Saint-Herblain weather in October

In October, Saint-Herblain sees average daytime highs of 17°C and overnight lows near 10°C, with 72 mm of rain across 11.3 wet days and about 10.6 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 15°C by the end. The sky is clear or mostly clear about 19% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 9 h 48 min by month's end. Set against the rest of the year, October is Saint-Herblain's 9th-clearest and 7th-windiest month. For the whole year in context, see Saint-Herblain's year-round climate.

Daytime high
17°
6th warmest
Overnight low
10°
7th coldest
Rainfall
72 mm
11.3 wet days
Daylight
10 h 36 min
7:33 AM – 6:10 PM
Cloud cover
68%
9th clearest
Wind
14 km/h
7th windiest
Solar energy
2.29 kWh/m²
Travel score
5.1
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 15°C by the end.

A typical October day in Saint-Herblain reaches about 17°C in the afternoon and slips back to 10°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 21°C. Set against its neighbours, October runs about 4°C cooler than September and about 4°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11911
21911
31911
41911
51811
61811
71811
81811
91811
101811
111811
121710
131710
141710
151710
161710
171710
181710
191710
201610
21169
22169
23169
24169
25169
26169
27159
28159
29159
30159
31158

How October really feels in Saint-Herblain

Once humidity and wind are folded in, October 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

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Saint-Herblain weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan / 7011.58.71.7
Feb10° / 549.4102.1
Mar13° / 521011.63.4
Apr15° / 5510.313.34.6
May19° / 10°5810.414.85.8
Jun22° / 13°448.215.66.7
Jul24° / 15°407.115.37.4
Aug24° / 15°467.4147.4
Sep21° / 12°487.212.46.9
Oct17° / 10°7211.310.65.1
Nov12° / 7011.49.13.2
Dec10° / 7811.78.41.9

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 16% of October, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23664
33565
43565
53466
63466
73466
83466
93565
103466
113565
123565
133565
143565
153664
163763
173763
183763
193664
203664
213664
223565
233565
243565
253565
263565
273466
283466
293466
303466
313466

Chance of precipitation in October

Any precipitation

Saint-Herblain gets around 72 mm of rain over 11.3 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 40% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
133
233
333
433
533
634
734
834
934
1034
1135
1235
1335
1436
1536
1637
1737
1837
1938
2038
2139
2239
2339
2439
2539
2640
2740
2840
2940
3040
3140

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 71% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
161327
261327
362326
462326
563316
663316
764315
864315
965305
1066304
1166304
1267294
1368293
1469283
1569283
1670282
1771272
1872262
1972262
2074251
2175241
2276231
2377221
2477221
2578211
2679201
2780191
2881181
2982171
3083161
3185141

Wind in October

Winds average 14 km/h in October.

Across October, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light 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
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 102 minutes over October. Sunrise moves from 7:12 AM to 7:56 AM, and sunset from 6:39 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:126:39
211.47:136:37
311.37:156:35
411.37:166:33
511.27:176:31
611.27:196:29
711.17:206:27
811.17:226:25
911.07:236:23
1010.97:256:21
1110.97:266:19
1210.87:276:18
1310.87:296:16
1410.77:306:14
1510.77:326:12
1610.67:336:10
1710.67:356:08
1810.57:366:06
1910.47:386:04
2010.47:396:03
2110.37:416:01
2210.37:425:59
2310.27:445:57
2410.27:455:56
2510.17:475:54
2610.17:485:52
2710.07:505:51
2810.07:515:49
299.97:535:48
309.97:545:46
319.87:565:44

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.29 kWh/m².

For context, solar energy here swings from a low near 0.98 kWh/m² to a high of 5.94 kWh/m² in June across the year — October's 2.29 kWh/m² falls in the middle.

0123151015202531
Solar energy (kWh/m²)Level
12.9Moderate
22.9Moderate
32.8Moderate
42.8Moderate
52.7Moderate
62.6Moderate
72.6Moderate
82.6Moderate
92.5Moderate
102.5Moderate
112.5Moderate
122.4Moderate
132.4Moderate
142.4Moderate
152.3Moderate
162.3Moderate
172.3Moderate
182.3Moderate
192.2Moderate
202.2Moderate
212.1Moderate
222.1Moderate
232.1Moderate
242.1Moderate
252.0Moderate
262.0Dim
271.9Dim
281.9Dim
291.9Dim
301.9Dim
311.8Dim
Planning a trip in October

Is October a good time to visit Saint-Herblain?

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

5.1
Sightseeing
6th-best month of the year
1.3
Beach & pool
6th-best month of the year

October is a reasonable time to visit Saint-Herblain for sightseeing.

What to pack for Saint-Herblain in October

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

In October, Saint-Herblain sees daytime highs around 17°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Saint-Herblain in October

The nearest coast averages about 16°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 37 km away) is warmest in August at about 19°C and coldest in February near 9°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
Feb9Bracing
Mar10Bracing
Apr12Bracing
May14Bracing
Jun17Cool
Jul18Cool
Aug19Cool
Sep17Cool
Oct16Cool
Nov14Bracing
Dec11Bracing

UV index in Saint-Herblain in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Saint-Herblain peaks around August 10 at about 7 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 10UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5High
May6High
Jun7High
Jul7High
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Saint-Herblain?

Saint-Herblain sits at 47.2°N, 1.7°W, 23 m above sea level, in France. The nearest listed city is Bouguenais, 4.0 km away.

Topography around Saint-Herblain

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

Within 3 km, the terrain around Saint-Herblain has only modest variations in elevation — a maximum elevation change of 68 m around an average of 26 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 165 m; within 80 km, significant variations in elevation — a maximum elevation change of 340 m.

The land around Saint-Herblain is covered by artificial surfaces (36%), trees (35%) and grassland (23%) within 3 km, grassland (35%) and trees (31%) within 16 km, and cropland (32%) and grassland (31%) within 80 km.

3 km
68 m
16 km
165 m
80 km
340 m
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Bouguenais 4.0 km · Couëron 6.0 km · Rezé 7.0 km · Orvault 7.0 km · Nantes 7.0 km · Saint-Sébastien-sur-Loire 11 km · La Chapelle-sur-Erdre 12 km · Vertou 14 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-Herblain (47.2115°, -1.651°, elevation 23 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).