Solarposition.org

Pays de la Loire · France · 46.67° N · 1.43° W

Solar position in La Roche-sur-Yon

Sun position, daylight and the best solar panel angle for La Roche-sur-Yon — computed for 46.67° N, 1.43° W, 73 m above sea level.

Sunrise today08:35106° ESE
Sunset today19:03253° WSW
Best panel angle37°year-round, facing south
Off-grid angle68°best for the darkest month

The sun right now

Azimuth180.0°
Elevation31.5°
At solar noon, 13:49Open on the sun map

Sun in La Roche-sur-Yon today

Saturday, 24 October 2026 · local time UTC+2

EventTimeDirection / height
Astronomical dawn06:54sun 18° below horizon
Nautical dawn07:2912° below
Civil dawn08:046° below
Sunrise08:35106° ESE
Golden hour ends09:18sun 6° up
Solar noon13:4931.5° high
Golden hour starts18:20sun 6° up
Sunset19:03253° WSW
Civil dusk19:346° below
Nautical dusk20:0912° below
Astronomical dusk20:4418° below
Day length10 h 27 min

Sun path diagram for La Roche-sur-Yon

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice789101112131415161718192021EquinoxDecember solstice91011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 66.8° at solar noon in La Roche-sur-Yon; on the December solstice only 19.9°. Sunrise swings from 53° NE in June to 124° SE in December — a 71° arc along the horizon.

Sunrise, sunset and sun height by month

Values for the 21st of each month, local clock time including daylight saving time.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January08:4113:1717:529 h 11 min23.5°
February07:5913:1918:3910 h 40 min32.9°
March07:0713:1319:1912 h 13 min43.7°
April07:0714:0421:0113 h 54 min55.3°
May06:2414:0221:4015 h 15 min63.6°
June06:1214:0722:0315 h 51 min66.8°
July06:3314:1221:5015 h 17 min63.7°
August07:1114:0821:0513 h 54 min55.3°
September07:5113:5820:0512 h 14 min43.9°
October08:3113:5019:0810 h 37 min32.6°
November08:1612:5117:269 h 10 min23.4°
December08:4713:0317:208 h 33 min19.9°

A year of daylight in La Roche-sur-Yon

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in La Roche-sur-Yon

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

37°collects the most energy over a year: 1310 kWh per kWp.

68°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 37°Best worst-month 68°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°109083%0.806.4×
15°123194%1.204.3×
30°130299%1.543.3×
37° year-round best1310100%1.662.9×
45°129899%1.782.6×
47° = latitude129299%1.802.5×
60°122193%1.912.2×
68° off-grid best115288%1.932.1×
70°113286%1.932.0×
90°87767%1.801.7×

A fixed array in La Roche-sur-Yon produces the most over a year at 37°. The design month for an off-grid system is December: at 68° it makes 1.93 kWh per kWp a day, 16% more than at 37°, and costs 12% of the yearly total. Why steep panels win winter.

Off-grid solar in La Roche-sur-Yon at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 37° (year-round best).

0123456January: 1.95 (70°)1.9JanFebruary: 2.91 (70°)2.9FebMarch: 3.49 (70°)3.5MarApril: 3.76 (70°)3.8AprMay: 3.48 (70°)3.5MayJune: 3.40 (70°)3.4JunJuly: 3.46 (70°)3.5JulAugust: 3.64 (70°)3.6AugSeptember: 3.91 (70°)3.9SepOctober: 2.99 (70°)3.0OctNovember: 2.32 (70°)2.3NovDecember: 1.93 (70°)1.9Dec37°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 37°Mean temp.
January1.192.231.951.756.7 °C
February2.133.312.912.806.5 °C
March3.354.003.493.738.6 °C
April4.794.353.764.5611.2 °C
May5.614.093.484.7114.2 °C
June6.214.053.404.8817.7 °C
July6.094.153.464.8619.4 °C
August5.284.353.644.6419.3 °C
September4.214.633.914.3617.1 °C
October2.493.502.992.9914.1 °C
November1.472.682.322.1010.2 °C
December1.042.201.931.667.2 °C
Year3.66 avg3.63 avg1132 kWh1310 kWh

Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 610 Wp of panels at 70°, versus 710 Wp at 37°. The steep array is 14% smaller for the same winter. Size your own system.

Row spacing in La Roche-sur-Yon

Distance between rows of 2 m long panels (slope length) so that no row shades the next between 10:00 and 14:00 solar time on the winter solstice.

6.9 mrow pitch at 70°

5.6 mrow pitch at 37°

Row spacing calculator

How La Roche-sur-Yon compares in France

Against the other 656 places in France with climate data, for a fixed array at its best angle.

190thof 657 places in France for sunshine, shared: 3.66 peak sun hours a day on flat ground.

+4%solar energy a year compared with the average place in France: 1,310 against 1,261 kWh per kWp.

−20 mindaylight on the longest day, compared with Paris: 15 h 51 min against 16 h 11 min.

37°best year-round tilt here; across France it runs from 33° in Ajaccio to 39° in Lille.

Of the 657 places in France, Marseille 12 and 5 other places get the most sun (4.46 peak sun hours a day) and Maubeuge and one other place the least (3.10); La Roche-sur-Yon ranks joint 190th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.93 kWh a day here, against 1.86 kWh on average in France. The shortest day lasts 8 h 33 min, +18 min compared with Paris.

The sunniest places in France

Solar forecast for La Roche-sur-Yon, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in La Roche-sur-Yon

What is the best solar panel angle in La Roche-sur-Yon?
For a fixed array facing south, the best year-round tilt in La Roche-sur-Yon is 37°, worth about 1310 kWh per kWp a year. An off-grid system that has to get through December does better at about 68°.
What time is sunrise and sunset in La Roche-sur-Yon today?
On 24 October 2026 the sun rises at 08:35 and sets at 19:03 local time (UTC+2), giving 10 h 27 min of daylight. Solar noon is at 13:49.
How many peak sun hours does La Roche-sur-Yon get?
On a flat surface 3.7 hours a day averaged over the year, from 1.0 in December to 6.2 in June. Panels tilted at 70° receive 2.2 sun hours a day in December.
How high does the sun get in La Roche-sur-Yon?
At solar noon the sun stands 66.8° above the horizon on the June solstice and 19.9° on the December solstice.
Is La Roche-sur-Yon a good place for solar panels?
With 3.7 peak sun hours a day on flat ground, La Roche-sur-Yon ranks joint 190th of 657 places in France for sunshine. A 1 kWp array at the best angle (37°) makes about 1,310 kWh a year here, 4% more than the average place in France.

Places near La Roche-sur-Yon

All places in France

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Sun positions: NREL Solar Position Algorithm. Climate: NASA POWER monthly climatology (NASA Langley Research Center). Forecast: Deutscher Wetterdienst, ICON-EU (CC BY 4.0), processed. Places: GeoNames (CC BY 4.0). Time zones: IANA. Sources and licences.