Les Sables-d'Olonne weather in August

In August, Les Sables-d'Olonne sees average daytime highs of 22°C and overnight lows near 17°C, with 40 mm of rain across 6.8 wet days and about 14 hours of daylight. It is the 1st-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 42% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 14 h 42 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Les Sables-d'Olonne's 1st-clearest and 12th-windiest month. For the whole year in context, see Les Sables-d'Olonne's year-round climate.

Daytime high
22°
1st warmest
Overnight low
17°
12th coldest
Rainfall
40 mm
6.8 wet days
Daylight
14 hours
6:11 AM – 8:12 PM
Cloud cover
47%
1st clearest
Wind
16 km/h
12th windiest
Solar energy
5.49 kWh/m²
Travel score
7.3
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical August day in Les Sables-d'Olonne reaches about 22°C in the afternoon and slips back to 17°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 25°C. Set against its neighbours, August runs on par with July and about 2°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12217
22217
32217
42217
52217
62217
72217
82217
92217
102217
112217
122217
132217
142217
152217
162217
172217
182217
192217
202217
212217
222217
232217
242217
252117
262117
272117
282117
292117
302117
312116

Les Sables-d'Olonne weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan10° / 9113.48.81.8
Feb10° / 6410.5102.0
Mar12° / 5710.711.62.9
Apr14° / 529.913.33.9
May17° / 12°549.914.85.3
Jun20° / 15°397.815.56.5
Jul21° / 17°336.615.27.3
Aug22° / 17°406.8147.3
Sep20° / 15°568.212.46.6
Oct17° / 13°9312.710.74.9
Nov13° / 10°10613.99.23.2
Dec10° / 10014.18.42.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 37%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26535
36535
46535
56535
66634
76634
86634
96634
106535
116535
126535
136436
146436
156436
166436
176238
186238
196238
206139
216238
226238
236139
246139
256139
266139
276139
286139
296139
306139
316139

Chance of precipitation in August

Any precipitation

Les Sables-d'Olonne gets around 40 mm of rain over 6.8 wet days in August. 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 23% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
120
220
320
421
521
621
721
822
922
1022
1122
1222
1322
1422
1522
1622
1722
1822
1923
2023
2122
2222
2322
2422
2522
2621
2721
2821
2920
3020
3120

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
112413970
212413970
312413971
413413871
513413771
614413781
714413681
814413681
914423681
1014423581
1114423581
1214423581
1314423581
1414433481
1514433481
1614433481
1714433481
1814433481
1914433480
2015433480
2116433380
2216433380
2318433270
2419433170
2520433070
2622422970
2723422860
2825422760
2926422760
3028412650
3129412550

Wind in August

Winds average 16 km/h in August, the calmest month.

Across August, daily wind ranges from about 16 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
116light breeze
216light breeze
316light breeze
416light breeze
516light 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
2216light breeze
2316light breeze
2416light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 42 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over August. Sunrise moves from 5:52 AM to 6:31 AM, and sunset from 8:34 PM to 7:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.75:528:34
214.75:538:33
314.65:548:32
414.65:568:30
514.55:578:29
614.55:588:27
714.45:598:26
814.46:018:24
914.36:028:23
1014.36:038:21
1114.36:058:20
1214.26:068:18
1314.26:078:17
1414.16:088:15
1514.16:108:13
1614.06:118:12
1714.06:128:10
1813.96:148:08
1913.96:158:06
2013.86:168:04
2113.86:178:03
2213.76:198:01
2313.66:207:59
2413.66:217:57
2513.56:237:55
2613.56:247:53
2713.46:257:51
2813.46:277:50
2913.36:287:48
3013.36:297:46
3113.26:317:44

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.49 kWh/m².

For context, solar energy here swings from a low near 1.07 kWh/m² to a high of 6.33 kWh/m² in June across the year — August's 5.49 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
35.9Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.7Bright
115.7Bright
125.7Bright
135.6Bright
145.6Bright
155.5Bright
165.5Bright
175.5Bright
185.4Bright
195.4Bright
205.3Bright
215.3Bright
225.3Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
314.9Bright
Planning a trip in August

Is August a good time to visit Les Sables-d'Olonne?

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

7.3
Sightseeing
1st-best month of the year
4.8
Beach & pool
1st-best month of the year

August is one of the better times to visit Les Sables-d'Olonne for general sightseeing.

What to pack for Les Sables-d'Olonne in August

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

In August, Les Sables-d'Olonne sees daytime highs around 22°C and nights near 17°C. Worth packing: sun protection. About 7 days see rain.

sun protection

Sea temperature near Les Sables-d'Olonne in August

The nearest coast averages about 20°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 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
Jan11Bracing
Feb10Bracing
Mar10Bracing
Apr12Bracing
May15Bracing
Jun17Cool
Jul19Cool
Aug20Cool
Sep19Cool
Oct17Cool
Nov15Bracing
Dec12Bracing

UV index in Les Sables-d'Olonne in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — 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 Sables-d'Olonne 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
Apr6High
May6High
Jun7High
Jul7Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Les Sables-d'Olonne?

Les Sables-d'Olonne sits at 46.5°N, 1.8°W, 7 m above sea level, in France. The nearest listed city is La Roche-sur-Yon, 33 km away.

Topography around Les Sables-d'Olonne

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Les Sables-d'Olonne.

Within 3 km, the terrain around Les Sables-d'Olonne has only modest variations in elevation — a maximum elevation change of 31 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 94 m; within 80 km, significant variations in elevation — a maximum elevation change of 339 m.

The land around Les Sables-d'Olonne is covered by artificial surfaces (40%) and water (39%) within 3 km, water (57%) within 16 km, and water (43%), cropland (25%) and grassland (20%) within 80 km.

3 km
31 m
16 km
94 m
80 km
339 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: La Roche-sur-Yon 33 km · Challans 39 km · La Rochelle 61 km · Les Herbiers 72 km · Fontenay-le-Comte 75 km · Bouguenais 77 km · Vertou 78 km · Rezé 79 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 Sables-d'Olonne (46.4969°, -1.7847°, elevation 7 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).