Saint-Lô weather in August

In August, Saint-Lô sees average daytime highs of 22°C and overnight lows near 13°C, with 67 mm of rain across 11.2 wet days and about 14.2 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 21°C by the end. The sky is clear or mostly clear about 20% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 15 hours at the start of August to 13 h 18 min by month's end. Set against the rest of the year, August is Saint-Lô's 2nd-clearest and 12th-windiest month. For the whole year in context, see Saint-Lô's year-round climate.

Daytime high
22°
2nd warmest
Overnight low
13°
12th coldest
Rainfall
67 mm
11.2 wet days
Daylight
14 h 12 min
6:02 AM – 8:15 PM
Cloud cover
64%
2nd clearest
Wind
11 km/h
12th windiest
Solar energy
4.81 kWh/m²
Travel score
6.3
out of 10
Air quality
Good
PM10 15.7 µg/m³ · 2019

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 21°C by the end.

A typical August day in Saint-Lô reaches about 22°C in the afternoon and slips back to 13°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°C. Set against its neighbours, August runs on par with July and about 3°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12214
22214
32214
42214
52214
62214
72214
82214
92214
102214
112214
122214
132214
142214
152213
162213
172213
182213
192113
202113
212113
222113
232113
242113
252113
262113
272113
282113
292112
302112
312012

How August really feels in Saint-Lô

Once humidity and wind are folded in, August 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

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

Saint-Lô weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 8213.30.68.51.1
Feb / 6711.81.19.81.4
Mar11° / 65120.511.62.6
Apr14° / 6712.50.113.43.7
May17° / 7112.10155.0
Jun20° / 11°6510.7015.95.9
Jul22° / 13°5610.7015.66.5
Aug22° / 13°6711.2014.26.3
Sep19° / 11°6110.4012.45.9
Oct15° / 8013.2010.54.2
Nov11° / 8113.80.18.92.4
Dec / 9814.20.78.11.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24258
34258
44258
54159
64159
74159
84159
94159
104159
114159
124159
134159
144159
154159
164060
174060
184060
193961
203961
213862
223862
233862
243862
253862
263961
273862
283862
294060
304060
314159

Chance of precipitation in August

Any precipitation

Saint-Lô gets around 67 mm of rain over 11.2 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 36% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
234
334
434
534
635
735
836
936
1036
1137
1237
1338
1438
1538
1639
1739
1839
1939
2039
2138
2238
2337
2436
2535
2634
2733
2833
2932
3031
3131

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 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13149191
23148201
33148201
43147202
53247202
63246202
73246192
83346192
93346192
103446182
113446182
123546172
133546172
143646162
153646162
163746162
173746152
183746152
193846142
203846142
213945142
224044132
234244132
244343132
254542122
264641121
274840111
284939111
295039101
30523891
31533791

Wind in August

Winds average 11 km/h in August, the calmest month.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 hours 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 102 minutes over August. Sunrise moves from 5:41 AM to 6:24 AM, and sunset from 8:40 PM to 7:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.05:418:40
214.95:428:38
314.95:448:37
414.85:458:35
514.85:468:34
614.75:488:32
714.75:498:31
814.65:518:29
914.65:528:27
1014.55:548:25
1114.55:558:24
1214.45:568:22
1314.45:588:20
1414.35:598:18
1514.36:018:17
1614.26:028:15
1714.26:048:13
1814.16:058:11
1914.06:078:09
2014.06:088:07
2113.96:108:05
2213.96:118:03
2313.86:128:01
2413.86:147:59
2513.76:157:57
2613.66:177:55
2713.66:187:53
2813.56:207:51
2913.56:217:49
3013.46:237:47
3113.36:247:45

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.81 kWh/m².

For context, solar energy here swings from a low near 0.83 kWh/m² to a high of 5.84 kWh/m² in June across the year — August's 4.81 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.0Bright
115.0Bright
125.0Bright
134.9Bright
144.9Bright
154.8Bright
164.8Bright
174.8Bright
184.7Bright
194.7Bright
204.6Bright
214.6Bright
224.6Bright
234.5Bright
244.5Bright
254.5Bright
264.4Bright
274.4Bright
284.4Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in August

Is August a good time to visit Saint-Lô?

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

6.3
Sightseeing
2nd-best month of the year
4.2
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Saint-Lô for sightseeing.

What to pack for Saint-Lô in August

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

In August, Saint-Lô sees daytime highs around 22°C and nights near 13°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Saint-Lô 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 at the nearest coast (about 29 km away) is warmest in August at about 18°C and coldest in February near 8°C.

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

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan9Bracing
Feb8Bracing
Mar8Bracing
Apr10Bracing
May12Bracing
Jun14Bracing
Jul17Cool
Aug18Cool
Sep18Cool
Oct16Cool
Nov13Bracing
Dec11Bracing

UV index in Saint-Lô 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 Saint-Lô peaks around June 17 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 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 17UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May6High
Jun7High
Jul6High
Aug7High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Saint-Lô?

Saint-Lô sits at 49.1°N, 1.1°W, 41 m above sea level, in France. The nearest listed city is Bayeux, 33 km away.

Topography around Saint-Lô

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

Within 3 km, the terrain around Saint-Lô has only modest variations in elevation — a maximum elevation change of 131 m around an average of 72 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 218 m; within 80 km, significant variations in elevation — a maximum elevation change of 389 m.

The land around Saint-Lô is covered by grassland (36%) and trees (31%) within 3 km, grassland (50%), cropland (27%) and trees (20%) within 16 km, and water (36%), grassland (28%) and cropland (24%) within 80 km.

3 km
131 m
16 km
218 m
80 km
389 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Bayeux 33 km · Caen 54 km · Flers 57 km · Hérouville-Saint-Clair 58 km · Tourlaville 68 km · Octeville 69 km · Cherbourg 70 km · Équeurdreville-Hainneville 72 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-Lô (49.1162°, -1.0903°, elevation 41 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).