La Roche-sur-Yon weather in May

In May, La Roche-sur-Yon sees average daytime highs of 19°C and overnight lows near 10°C, with 62 mm of rain across 10.9 wet days and about 14.8 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 21°C by the end. The sky is clear or mostly clear about 20% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of May to 15 h 18 min by month's end. Set against the rest of the year, May is La Roche-sur-Yon's 7th-clearest and 8th-windiest month. For the whole year in context, see La Roche-sur-Yon's year-round climate.

Daytime high
19°
5th warmest
Overnight low
10°
8th coldest
Rainfall
62 mm
10.9 wet days
Daylight
14 h 48 min
5:38 AM – 8:26 PM
Cloud cover
65%
7th clearest
Wind
14 km/h
8th windiest
Solar energy
5.75 kWh/m²
Travel score
5.8
out of 10
Air quality
Good
PM10 15.3 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 17°C in the first days to 21°C by the end.

A typical May day in La Roche-sur-Yon reaches about 19°C in the afternoon and slips back to 10°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 24°C. Set against its neighbours, May runs about 3°C warmer than April and about 3°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1179
2179
3179
4179
5179
6189
7189
8189
9189
10189
111810
121810
131810
141910
151910
161910
171910
181910
191910
201910
212011
222011
232011
242011
252011
262011
272011
282011
292112
302112
312112

How May really feels in La Roche-sur-Yon

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.

La Roche-sur-Yon 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 daysDaylight (hours)Travel score
Jan / 7611.38.81.8
Feb10° / 589.6102.2
Mar13° / 5510.311.63.6
Apr16° / 5710.713.34.6
May19° / 10°6210.914.85.8
Jun22° / 13°47915.66.7
Jul24° / 15°417.515.37.4
Aug25° / 15°467.5147.4
Sep22° / 12°537.712.46.9
Oct17° / 10°781210.65.2
Nov13° / 7912.19.23.2
Dec10° / 8412.28.42.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23268
33268
43268
53268
63268
73367
83268
93367
103466
113367
123466
133565
143664
153664
163664
173763
183862
193862
204060
214060
224060
234159
244258
254258
264159
274258
284258
294159
304258
314258

Chance of precipitation in May

Any precipitation

La Roche-sur-Yon gets around 62 mm of rain over 10.9 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 35% and peaks near 41% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
241
340
440
539
639
738
838
937
1037
1136
1236
1336
1436
1535
1635
1735
1835
1934
2034
2134
2233
2333
2433
2532
2632
2732
2832
2932
3032
3133

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 85% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19370
29370
39280
49190
590100
690100
789110
889110
989110
1089110
1188120
1289110
1389110
1488111
1588111
1687121
1787121
1887121
1986131
2085132
2184142
2283152
2382162
2480173
2579183
2678193
2776213
2874224
2973234
3072244
3170255

Wind in May

Winds average 14 km/h in May.

Across May, 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
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 06 min at the start of May to 15 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over May. Sunrise moves from 5:59 AM to 5:23 AM, and sunset from 8:07 PM to 8:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:598:07
214.25:588:08
314.25:568:09
414.35:548:11
514.35:538:12
614.45:518:13
714.45:508:15
814.55:488:16
914.55:478:17
1014.55:468:19
1114.65:448:20
1214.65:438:21
1314.75:428:22
1414.75:408:24
1514.85:398:25
1614.85:388:26
1714.85:378:27
1814.95:358:29
1914.95:348:30
2015.05:338:31
2115.05:328:32
2215.05:318:33
2315.15:308:35
2415.15:298:36
2515.15:288:37
2615.25:278:38
2715.25:268:39
2815.25:268:40
2915.35:258:41
3015.35:248:42
3115.35:238:43

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.75 kWh/m².

For context, solar energy here swings from a low near 1.04 kWh/m² to a high of 6.19 kWh/m² in June across the year — May's 5.75 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.3Bright
45.3Bright
55.3Bright
65.4Bright
75.4Bright
85.4Bright
95.5Bright
105.5Bright
115.5Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
226.0Bright
236.0Bright
246.0Intense
256.0Intense
266.0Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in May

Is May a good time to visit La Roche-sur-Yon?

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

5.8
Sightseeing
5th-best month of the year
2.5
Beach & pool
5th-best month of the year

May is a reasonable time to visit La Roche-sur-Yon for sightseeing.

What to pack for La Roche-sur-Yon in May

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

In May, La Roche-sur-Yon sees daytime highs around 19°C and nights near 10°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near La Roche-sur-Yon in May

The nearest coast averages about 15°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 33 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
Jan10Bracing
Feb10Bracing
Mar10Bracing
Apr12Bracing
May15Bracing
Jun17Cool
Jul19Cool
Aug20Cool
Sep18Cool
Oct17Cool
Nov14Bracing
Dec12Bracing

UV index in La Roche-sur-Yon 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 La Roche-sur-Yon peaks around July 24 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 24UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May6High
Jun7High
Jul7Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is La Roche-sur-Yon?

La Roche-sur-Yon sits at 46.7°N, 1.4°W, 73 m above sea level, in France. The nearest listed city is Les Sables-d'Olonne, 33 km away.

Topography around La Roche-sur-Yon

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of La Roche-sur-Yon.

Within 3 km, the terrain around La Roche-sur-Yon has only modest variations in elevation — a maximum elevation change of 51 m around an average of 63 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 135 m; within 80 km, significant variations in elevation — a maximum elevation change of 339 m.

The land around La Roche-sur-Yon is covered by artificial surfaces (46%) and trees (26%) within 3 km, cropland (40%), grassland (31%) and trees (22%) within 16 km, and cropland (32%), water (27%) and grassland (26%) within 80 km.

3 km
51 m
16 km
135 m
80 km
339 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Les Sables-d'Olonne 33 km · Les Herbiers 39 km · Challans 40 km · Fontenay-le-Comte 53 km · Vertou 56 km · Bouguenais 59 km · Rezé 59 km · Cholet 60 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 La Roche-sur-Yon (46.6697°, -1.4276°, elevation 73 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).