Solarposition.org

Pays de la Loire · France · 47.21° N · 1.65° W

Solar position in Saint-Herblain

Sun position, daylight and the best solar panel angle for Saint-Herblain — computed for 47.21° N, 1.65° W, 23 m above sea level.

Sunrise today08:37107° ESE
Sunset today19:03253° WSW
Best panel angle37°year-round, facing south
Off-grid angle69°best for the darkest month

The sun right now

Azimuth180.0°
Elevation31.0°
At solar noon, 13:50Open on the sun map

Sun in Saint-Herblain today

Saturday, 24 October 2026 · local time UTC+2

EventTimeDirection / height
Astronomical dawn06:55sun 18° below horizon
Nautical dawn07:3012° below
Civil dawn08:066° below
Sunrise08:37107° ESE
Golden hour ends09:20sun 6° up
Solar noon13:5031.0° high
Golden hour starts18:20sun 6° up
Sunset19:03253° WSW
Civil dusk19:346° below
Nautical dusk20:1012° below
Astronomical dusk20:4518° below
Day length10 h 25 min

Sun path diagram for Saint-Herblain

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 solstice1011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 66.2° at solar noon in Saint-Herblain; on the December solstice only 19.4°. Sunrise swings from 53° NE in June to 125° SE in December — a 72° 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
January08:4413:1817:529 h 08 min23.0°
February08:0113:2018:3910 h 38 min32.4°
March07:0713:1419:2012 h 13 min43.2°
April07:0714:0521:0313 h 56 min54.8°
May06:2314:0321:4315 h 19 min63.0°
June06:1014:0822:0615 h 56 min66.2°
July06:3214:1221:5315 h 21 min63.2°
August07:1114:0921:0713 h 56 min54.8°
September07:5113:5920:0612 h 15 min43.4°
October08:3313:5019:0810 h 35 min32.0°
November08:1912:5217:259 h 06 min22.9°
December08:5013:0417:198 h 29 min19.4°

A year of daylight in Saint-Herblain

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 Saint-Herblain

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: 1274 kWh per kWp.

69°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 69°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°106183%0.756.7×
15°119794%1.134.5×
30°126799%1.453.4×
37° year-round best1274100%1.573.1×
45°126499%1.682.7×
47° = latitude125899%1.702.6×
60°119093%1.802.3×
69° off-grid best111487%1.822.1×
70°110487%1.822.1×
90°85867%1.711.8×

A fixed array in Saint-Herblain produces the most over a year at 37°. The design month for an off-grid system is December: at 69° it makes 1.82 kWh per kWp a day, 16% more than at 37°, and costs 13% of the yearly total. Why steep panels win winter.

Off-grid solar in Saint-Herblain at 70°

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

0123456January: 1.86 (70°)1.9JanFebruary: 2.78 (70°)2.8FebMarch: 3.37 (70°)3.4MarApril: 3.72 (70°)3.7AprMay: 3.48 (70°)3.5MayJune: 3.38 (70°)3.4JunJuly: 3.42 (70°)3.4JulAugust: 3.57 (70°)3.6AugSeptember: 3.82 (70°)3.8SepOctober: 2.85 (70°)2.9OctNovember: 2.23 (70°)2.2NovDecember: 1.82 (70°)1.8Dec37°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 37°Mean temp.
January1.132.121.861.666.1 °C
February2.033.162.782.676.1 °C
March3.233.863.373.608.3 °C
April4.714.313.724.4910.9 °C
May5.554.093.484.6814.0 °C
June6.094.043.384.8117.5 °C
July5.944.103.424.7619.3 °C
August5.144.263.574.5219.1 °C
September4.094.513.824.2416.7 °C
October2.383.332.852.8513.5 °C
November1.402.572.232.029.6 °C
December0.982.081.821.576.6 °C
Year3.56 avg3.54 avg1104 kWh1274 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 650 Wp of panels at 70°, versus 750 Wp at 37°. The steep array is 14% smaller for the same winter. Size your own system.

Row spacing in Saint-Herblain

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.

7.2 mrow pitch at 70°

5.7 mrow pitch at 37°

Row spacing calculator

How Saint-Herblain compares in France

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

218thof 657 places in France for sunshine, shared: 3.56 peak sun hours a day on flat ground.

+1%solar energy a year compared with the average place in France: 1,274 against 1,261 kWh per kWp.

−15 mindaylight on the longest day, compared with Paris: 15 h 56 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); Saint-Herblain ranks joint 218th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.82 kWh a day here, against 1.86 kWh on average in France. The shortest day lasts 8 h 29 min, +14 min compared with Paris.

The sunniest places in France

Solar forecast for Saint-Herblain, 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 Saint-Herblain

What is the best solar panel angle in Saint-Herblain?
For a fixed array facing south, the best year-round tilt in Saint-Herblain is 37°, worth about 1274 kWh per kWp a year. An off-grid system that has to get through December does better at about 69°.
What time is sunrise and sunset in Saint-Herblain today?
On 24 October 2026 the sun rises at 08:37 and sets at 19:03 local time (UTC+2), giving 10 h 25 min of daylight. Solar noon is at 13:50.
How many peak sun hours does Saint-Herblain get?
On a flat surface 3.6 hours a day averaged over the year, from 1.0 in December to 6.1 in June. Panels tilted at 70° receive 2.1 sun hours a day in December.
How high does the sun get in Saint-Herblain?
At solar noon the sun stands 66.2° above the horizon on the June solstice and 19.4° on the December solstice.
Is Saint-Herblain a good place for solar panels?
With 3.6 peak sun hours a day on flat ground, Saint-Herblain ranks joint 218th of 657 places in France for sunshine. A 1 kWp array at the best angle (37°) makes about 1,274 kWh a year here, 1% more than the average place in France.

Places near Saint-Herblain

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.