Saint-Lô weather in May

In May, Saint-Lô sees average daytime highs of 17°C and overnight lows near 9°C, with 71 mm of rain across 12.1 wet days and about 15 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 18°C by the end. The sky is clear or mostly clear about 16% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 18 min at the start of May to 15 h 36 min by month's end. Set against the rest of the year, May is Saint-Lô's 6th-clearest and 8th-windiest month. For the whole year in context, see Saint-Lô's year-round climate.

Daytime high
17°
5th warmest
Overnight low
8th coldest
Rainfall
71 mm
12.1 wet days
Daylight
15 h 06 min
5:28 AM – 8:33 PM
Cloud cover
69%
6th clearest
Wind
13 km/h
8th windiest
Solar energy
5.42 kWh/m²
Travel score
5.0
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 May

Average highAverage lowShaded bands: 10–90% of days

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

A typical May day in Saint-Lô reaches about 17°C in the afternoon and slips back to 9°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 22°C. Set against its neighbours, May runs about 3°C warmer than April and about 3°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1157
2158
3158
4158
5168
6168
7168
8168
9168
10168
11168
12168
13168
14179
15179
16179
17179
18179
19179
20179
21179
22189
23189
241810
251810
261810
271810
281810
291810
301810
311810

How May really feels in Saint-Lô

Once humidity and wind are folded in, May 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

May 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 May compares with the rest of the year at a glance. May is the 5th-warmest and 5th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12575
22575
32575
42476
52476
62575
72674
82674
92674
102674
112872
122872
132971
142971
153169
163169
173169
183268
193268
203367
213367
223367
233466
243466
253466
263466
273367
283367
293367
303268
313268

Chance of precipitation in May

Any precipitation

Saint-Lô gets around 71 mm of rain over 12.1 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 45% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
145
245
344
444
543
642
741
841
940
1040
1140
1240
1340
1440
1540
1640
1740
1840
1940
2039
2139
2239
2339
2439
2538
2638
2738
2837
2937
3037
3137

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19820
29730
39730
49640
59640
69640
79550
89550
99460
109460
119460
129460
139460
149460
159370
169370
179370
189370
199280
209280
219190
2290100
2390100
2488111
2587121
2686131
2785141
2884151
2983161
3082171
3182171

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
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
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 18 min at the start of May to 15 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over May. Sunrise moves from 5:52 AM to 5:12 AM, and sunset from 8:11 PM to 8:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.35:528:11
214.45:508:13
314.45:498:14
414.55:478:16
514.55:458:17
614.65:438:19
714.65:428:20
814.75:408:21
914.75:398:23
1014.85:378:24
1114.85:368:26
1214.95:348:27
1314.95:338:29
1415.05:318:30
1515.05:308:31
1615.15:288:33
1715.15:278:34
1815.25:268:36
1915.25:258:37
2015.25:238:38
2115.35:228:39
2215.35:218:41
2315.45:208:42
2415.45:198:43
2515.45:188:44
2615.55:178:46
2715.55:168:47
2815.65:158:48
2915.65:148:49
3015.65:138:50
3115.65:128:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.42 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 — May's 5.42 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.1Bright
65.1Bright
75.1Bright
85.2Bright
95.2Bright
105.2Bright
115.3Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.4Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in May

Is May a good time to visit Saint-Lô?

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

5.0
Sightseeing
5th-best month of the year
1.1
Beach & pool
5th-best month of the year

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

What to pack for Saint-Lô in May

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

In May, Saint-Lô sees daytime highs around 17°C and nights near 9°C. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

Sea temperature near Saint-Lô in May

The nearest coast averages about 12°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — 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
May 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).