La Roche-sur-Yon weather in January

In January, La Roche-sur-Yon sees average daytime highs of 9°C and overnight lows near 4°C, with 76 mm of precipitation across 11.3 wet days and about 8.8 hours of daylight. It is the 12th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 9°C through the month. The sky is clear or mostly clear about 17% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 24 min at the start of January to 9 h 18 min by month's end. Set against the rest of the year, January is La Roche-sur-Yon's 12th-clearest and 1st-windiest month. For the whole year in context, see La Roche-sur-Yon's year-round climate.

Daytime high
12th warmest
Overnight low
2nd coldest
Precipitation
76 mm
11.3 wet days
Daylight
8 h 42 min
8:53 AM – 5:37 PM
Cloud cover
72%
12th clearest
Wind
16 km/h
1st windiest
Solar energy
1.24 kWh/m²
Travel score
1.8
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 9°C through the month.

A typical January day in La Roche-sur-Yon reaches about 9°C in the afternoon and slips back to 4°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 13°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
194
294
394
494
594
694
794
894
994
1094
1194
1294
1394
1494
1594
1694
1794
1894
1994
2094
2194
2294
2393
2493
2593
2693
2793
2893
2993
3093
3193

How January really feels in La Roche-sur-Yon

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 13 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
13
wind chill below the day's low

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

La Roche-sur-Yon weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 4th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22872
32872
42773
52773
62773
72773
82971
92971
102971
112971
122971
132971
142971
152971
162971
173070
183070
193070
203070
212971
223070
233070
243070
252971
262971
273070
283070
293070
303169
313268

Chance of precipitation in January

Any precipitation

La Roche-sur-Yon gets around 76 mm of rain and snow over 11.3 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 37% and peaks near 41% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
241
341
441
541
641
741
840
940
1040
1140
1239
1339
1438
1538
1637
1737
1836
1936
2035
2135
2234
2333
2433
2532
2632
2732
2832
2932
3032
3132

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 16 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 16 km/h on the calmest days to 16 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
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 24 min at the start of January to 9 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over January. Sunrise moves from 8:56 AM to 8:40 AM, and sunset from 5:21 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.48:565:21
28.48:565:22
38.48:565:23
48.58:565:24
58.58:565:25
68.58:565:26
78.58:565:27
88.58:565:28
98.68:565:29
108.68:555:30
118.68:555:31
128.68:555:32
138.78:545:34
148.78:545:35
158.78:535:36
168.78:535:37
178.88:525:39
188.88:515:40
198.88:515:41
208.98:505:43
218.98:495:44
228.98:495:45
239.08:485:47
249.08:475:48
259.18:465:49
269.18:455:51
279.18:445:52
289.28:435:54
299.28:425:55
309.38:415:56
319.38:405:58

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.24 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 — January's 1.24 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.0Dim
21.0Dim
31.1Dim
41.1Dim
51.1Dim
61.1Dim
71.1Dim
81.1Dim
91.1Dim
101.1Dim
111.1Dim
121.2Dim
131.2Dim
141.2Dim
151.2Dim
161.2Dim
171.3Dim
181.3Dim
191.3Dim
201.3Dim
211.3Dim
221.4Dim
231.4Dim
241.4Dim
251.4Dim
261.5Dim
271.5Dim
281.5Dim
291.6Dim
301.6Dim
311.6Dim
Planning a trip in January

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

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

1.8
Sightseeing
12th-best month of the year
0.0
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in La Roche-sur-Yon.

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

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

In January, La Roche-sur-Yon sees daytime highs around 9°C and nights near 4°C. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near La Roche-sur-Yon in January

The nearest coast averages about 10°C in January — 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 January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. 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
January 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).