Saint-Nazaire weather in October

In October, Saint-Nazaire sees average daytime highs of 16°C and overnight lows near 11°C, with 76 mm of rain across 11.6 wet days and about 10.6 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 15°C by the end. The sky is clear or mostly clear about 20% 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-Nazaire's 9th-clearest and 7th-windiest month. For the whole year in context, see Saint-Nazaire's year-round climate.

Daytime high
16°
6th warmest
Overnight low
11°
7th coldest
Rainfall
76 mm
11.6 wet days
Daylight
10 h 36 min
7:36 AM – 6:12 PM
Cloud cover
67%
9th clearest
Wind
16 km/h
7th windiest
Solar energy
2.35 kWh/m²
Travel score
4.9
out of 10

Saint-Nazaire is commune in Loire-Atlantique, France.

Air quality
Good
PM2.5 8.2 µg/m³ · 2019
Density
1,433/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 18°C in the first days to 15°C by the end.

A typical October day in Saint-Nazaire reaches about 16°C in the afternoon and slips back to 11°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 19°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)
11813
21813
31813
41813
51813
61812
71712
81712
91712
101712
111712
121712
131712
141712
151612
161611
171611
181611
191611
201611
211611
221611
231611
241511
251511
261511
271510
281510
291510
301510
311510

Saint-Nazaire weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan / 7211.58.71.7
Feb / 549.29.92.0
Mar12° / 509.811.63.1
Apr14° / 5110.113.34.1
May17° / 12°5410.214.85.5
Jun20° / 14°418.615.76.5
Jul22° / 16°417.815.37.1
Aug22° / 16°457.9147.1
Sep20° / 14°527.812.46.6
Oct16° / 11°7611.610.64.9
Nov12° / 7611.79.13.1
Dec10° / 8112.38.32.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% 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 (%)
13961
23763
33664
43664
53664
63466
73466
83466
93466
103466
113466
123466
133466
143466
153565
163664
173664
183763
193763
203664
213664
223664
233763
243664
253664
263664
273664
283664
293664
303664
313664

Chance of precipitation in October

Any precipitation

Saint-Nazaire gets around 76 mm of rain over 11.6 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 38% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
236
336
436
536
636
736
836
936
1036
1136
1236
1336
1436
1536
1637
1737
1838
1938
2038
2139
2239
2339
2439
2540
2640
2740
2840
2941
3041
3141

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 64% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1523612
2523612
3523612
4533611
5533611
6543610
755369
856359
957358
1058357
1158357
1260346
1361345
1461345
1562344
1663334
1764333
1865323
1966322
2067312
2168302
2269292
2371281
2472271
2573261
2674251
2775241
2876231
2977221
3079201
3181190

Wind in October

Winds average 16 km/h in October.

Across October, 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.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
616light breeze
716light 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
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light 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 7:14 AM to 7:58 AM, and sunset from 6:42 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:146:42
211.47:156:40
311.37:176:38
411.37:186:36
511.27:206:34
611.27:216:32
711.17:236:30
811.17:246:28
911.07:256:26
1010.97:276:24
1110.97:286:22
1210.87:306:20
1310.87:316:18
1410.77:336:16
1510.77:346:14
1610.67:366:12
1710.67:376:10
1810.57:396:08
1910.47:406:07
2010.47:426:05
2110.37:436:03
2210.37:456:01
2310.27:466:00
2410.27:485:58
2510.17:495:56
2610.17:515:55
2710.07:525:53
2810.07:545:51
299.97:555:50
309.97:575:48
319.87:585:47

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.35 kWh/m².

For context, solar energy here swings from a low near 0.99 kWh/m² to a high of 6.18 kWh/m² in June across the year — October's 2.35 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.0Moderate
23.0Moderate
32.9Moderate
42.8Moderate
52.8Moderate
62.7Moderate
72.7Moderate
82.6Moderate
92.6Moderate
102.5Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.4Moderate
152.4Moderate
162.4Moderate
172.3Moderate
182.3Moderate
192.3Moderate
202.2Moderate
212.2Moderate
222.2Moderate
232.1Moderate
242.1Moderate
252.1Moderate
262.0Moderate
272.0Dim
282.0Dim
291.9Dim
301.9Dim
311.9Dim
Planning a trip in October

Is October a good time to visit Saint-Nazaire?

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

4.9
Sightseeing
6th-best month of the year
0.9
Beach & pool
6th-best month of the year

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

What to pack for Saint-Nazaire in October

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

In October, Saint-Nazaire sees daytime highs around 16°C and nights near 11°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Saint-Nazaire 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 18 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-Nazaire 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-Nazaire 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-Nazaire?

Saint-Nazaire sits at 47.3°N, 2.2°W, 12 m above sea level, in France. The nearest listed city is La Baule-Escoublac, 11 km away.

Topography around Saint-Nazaire

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

Within 3 km, the terrain around Saint-Nazaire has only modest variations in elevation — a maximum elevation change of 37 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 119 m; within 80 km, significant variations in elevation — a maximum elevation change of 293 m.

The land around Saint-Nazaire is covered by artificial surfaces (36%) and water (36%) within 3 km, water (32%) and grassland (27%) within 16 km, and water (34%), grassland (25%) and cropland (21%) within 80 km.

3 km
37 m
16 km
119 m
80 km
293 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
October weather nearby: La Baule-Escoublac 11 km · Guérande 17 km · Couëron 38 km · Saint-Herblain 43 km · Orvault 45 km · Bouguenais 46 km · Rezé 50 km · La Chapelle-sur-Erdre 50 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-Nazaire (47.2751°, -2.2179°, elevation 12 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).