Concarneau weather in August

In August, Concarneau sees average daytime highs of 20°C and overnight lows near 15°C, with 51 mm of rain across 9.5 wet days and about 14.1 hours of daylight. It is the 1st-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 26% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 14 h 48 min at the start of August to 13 h 18 min by month's end. Set against the rest of the year, August is Concarneau's 3rd-clearest and 12th-windiest month. For the whole year in context, see Concarneau's year-round climate.

Daytime high
20°
1st warmest
Overnight low
15°
12th coldest
Rainfall
51 mm
9.5 wet days
Daylight
14 h 06 min
6:16 AM – 8:23 PM
Cloud cover
61%
3rd clearest
Wind
13 km/h
12th windiest
Solar energy
4.92 kWh/m²
Travel score
6.4
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical August day in Concarneau reaches about 20°C in the afternoon and slips back to 15°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 24°C. Set against its neighbours, August runs on par with July and about 2°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12115
22115
32115
42115
52115
62115
72115
82115
92115
102115
112115
122115
132115
142115
152015
162015
172015
182015
192015
202015
212015
222015
232015
242014
252014
262014
272014
282014
292014
302014
312014

Concarneau 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
Jan / 9213.38.61.7
Feb / 7311.29.91.8
Mar11° / 6111.111.62.7
Apr13° / 6511.513.43.6
May16° / 10°6011.214.94.7
Jun19° / 13°49915.76.0
Jul20° / 15°459.115.46.5
Aug20° / 15°519.514.16.4
Sep19° / 13°55912.46.1
Oct16° / 11°8813.210.64.4
Nov12° / 9113.79.12.9
Dec10° / 10313.68.32.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24555
34654
44555
54555
64555
74555
84555
94555
104654
114555
124555
134555
144555
154654
164654
174555
184456
194357
204456
214357
224357
234357
244357
254456
264357
274357
284555
294555
304555
314555

Chance of precipitation in August

Any precipitation

Concarneau gets around 51 mm of rain over 9.5 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 30% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
129
230
330
430
530
630
730
830
930
1030
1130
1230
1330
1431
1531
1631
1732
1832
1932
2032
2132
2232
2331
2431
2530
2629
2728
2828
2927
3027
3126

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 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11851292
21950292
31950292
41949292
51949292
62049292
72048292
82048292
92048292
102048292
112049292
122149292
132149282
142150282
152151271
162151271
172152261
182152261
192153251
202253241
212353231
222452231
232651221
242752201
252951191
263051181
273250171
283350171
293449161
303648151
313748141

Wind in August

Winds average 13 km/h in August, the calmest month.

Across August, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 48 min at the start of August to 13 h 18 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 5:56 AM to 6:37 AM, and sunset from 8:47 PM to 7:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.85:568:47
214.85:588:46
314.85:598:44
414.76:008:43
514.76:028:41
614.66:038:40
714.66:048:38
814.56:068:37
914.56:078:35
1014.46:088:33
1114.46:108:32
1214.36:118:30
1314.36:128:28
1414.26:148:27
1514.26:158:25
1614.16:168:23
1714.16:188:21
1814.06:198:19
1914.06:218:18
2013.96:228:16
2113.86:238:14
2213.86:258:12
2313.76:268:10
2413.76:288:08
2513.66:298:06
2613.66:308:04
2713.56:328:02
2813.56:338:00
2913.46:357:58
3013.36:367:56
3113.36:377:54

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.92 kWh/m².

For context, solar energy here swings from a low near 0.92 kWh/m² to a high of 6 kWh/m² in June across the year — August's 4.92 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.2Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.1Bright
135.0Bright
145.0Bright
155.0Bright
164.9Bright
174.9Bright
184.8Bright
194.8Bright
204.8Bright
214.7Bright
224.7Bright
234.7Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.5Bright
294.5Bright
304.5Bright
314.4Bright
Planning a trip in August

Is August a good time to visit Concarneau?

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

6.4
Sightseeing
2nd-best month of the year
3.6
Beach & pool
1st-best month of the year

August is a reasonable time to visit Concarneau for sightseeing.

What to pack for Concarneau in August

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

In August, Concarneau sees daytime highs around 20°C and nights near 15°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

Sea temperature near Concarneau in August

The nearest coast averages about 18°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 18°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°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan11Bracing
Feb10Bracing
Mar10Bracing
Apr12Bracing
May14Bracing
Jun16Cool
Jul17Cool
Aug18Cool
Sep17Cool
Oct16Cool
Nov14Bracing
Dec12Bracing

UV index in Concarneau 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 Concarneau peaks around August 12 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 12UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr5High
May6High
Jun7High
Jul6High
Aug7High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Concarneau?

Concarneau sits at 47.9°N, 3.9°W, 11 m above sea level, in France. The nearest listed city is Quimper, 19 km away.

Topography around Concarneau

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

Within 3 km, the terrain around Concarneau has only modest variations in elevation — a maximum elevation change of 84 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 170 m; within 80 km, significant variations in elevation — a maximum elevation change of 384 m.

The land around Concarneau is covered by water (40%) and trees (28%) within 3 km, water (34%) and trees (28%) within 16 km, and water (40%) and trees (25%) within 80 km.

3 km
84 m
16 km
170 m
80 km
384 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Quimper 19 km · Douarnenez 39 km · Ploemeur 40 km · Lorient 43 km · Lanester 45 km · Landerneau 69 km · Brest 71 km · Pontivy 74 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 Concarneau (47.8754°, -3.919°, elevation 11 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).