Solarposition.org

Occitanie · France · 43.64° N · 3.90° E

Solar position in Castelnau-le-Lez

Sun position, daylight and the best solar panel angle for Castelnau-le-Lez — computed for 43.64° N, 3.90° E, 59 m above sea level.

Sunrise today08:09106° ESE
Sunset today18:46254° WSW
Best panel angle36°year-round, facing south
Off-grid angle67°best for the darkest month

The sun right now

Azimuth180.0°
Elevation34.5°
At solar noon, 13:28Open on the sun map

Sun in Castelnau-le-Lez today

Saturday, 24 October 2026 · local time UTC+2

EventTimeDirection / height
Astronomical dawn06:33sun 18° below horizon
Nautical dawn07:0612° below
Civil dawn07:406° below
Sunrise08:09106° ESE
Golden hour ends08:49sun 6° up
Solar noon13:2834.5° high
Golden hour starts18:06sun 6° up
Sunset18:46254° WSW
Civil dusk19:166° below
Nautical dusk19:4912° below
Astronomical dusk20:2218° below
Day length10 h 37 min

Sun path diagram for Castelnau-le-Lez

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 69.8° at solar noon in Castelnau-le-Lez; on the December solstice only 23.0°. Sunrise swings from 56° NE in June to 122° ESE in December — a 67° 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
January08:1112:5517:409 h 30 min26.6°
February07:3412:5818:2210 h 48 min35.9°
March06:4612:5118:5712 h 12 min46.7°
April06:5213:4320:3413 h 43 min58.3°
May06:1313:4121:0814 h 55 min66.6°
June06:0213:4621:2915 h 27 min69.8°
July06:2213:5021:1814 h 57 min66.8°
August06:5513:4720:3813 h 43 min58.4°
September07:3013:3719:4312 h 14 min47.0°
October08:0513:2818:5110 h 46 min35.6°
November07:4512:3017:149 h 28 min26.4°
December08:1412:4217:108 h 56 min23.0°

A year of daylight in Castelnau-le-Lez

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 Castelnau-le-Lez

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

36°collects the most energy over a year: 1492 kWh per kWp.

67°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 36°Best worst-month 67°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°124483%1.155.0×
15°140694%1.743.3×
30°1485100%2.222.5×
36° year-round best1492100%2.382.3×
44° = latitude147999%2.552.0×
45°147699%2.572.0×
60°138193%2.741.6×
67° off-grid best130988%2.761.5×
70°127485%2.761.5×
90°97165%2.571.6×

A fixed array in Castelnau-le-Lez produces the most over a year at 36°. The design month for an off-grid system is December: at 67° it makes 2.76 kWh per kWp a day, 16% more than at 36°, and costs 12% of the yearly total. Why steep panels win winter.

Off-grid solar in Castelnau-le-Lez at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 36° (year-round best).

0123456January: 2.90 (70°)2.9JanFebruary: 3.62 (70°)3.6FebMarch: 3.96 (70°)4.0MarApril: 3.78 (70°)3.8AprMay: 3.52 (70°)3.5MayJune: 3.47 (70°)3.5JunJuly: 3.60 (70°)3.6JulAugust: 3.87 (70°)3.9AugSeptember: 4.07 (70°)4.1SepOctober: 3.36 (70°)3.4OctNovember: 2.98 (70°)3.0NovDecember: 2.76 (70°)2.8Dec36°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 36°Mean temp.
January1.683.292.902.575.9 °C
February2.644.103.623.496.2 °C
March3.874.553.964.299.3 °C
April5.064.393.784.7212.5 °C
May6.094.173.524.9916.2 °C
June7.044.193.475.3220.9 °C
July7.064.393.605.3923.6 °C
August6.044.703.875.1423.3 °C
September4.604.854.074.6319.3 °C
October2.863.953.363.3915.3 °C
November1.893.432.982.7110.3 °C
December1.473.142.762.386.8 °C
Year4.20 avg4.09 avg1274 kWh1492 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 430 Wp of panels at 70°, versus 500 Wp at 36°. The steep array is 14% smaller for the same winter. Size your own system.

Row spacing in Castelnau-le-Lez

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.

5.9 mrow pitch at 70°

4.9 mrow pitch at 36°

Row spacing calculator

How Castelnau-le-Lez compares in France

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

73rdof 657 places in France for sunshine, shared: 4.20 peak sun hours a day on flat ground.

+18%solar energy a year compared with the average place in France: 1,492 against 1,261 kWh per kWp.

−44 mindaylight on the longest day, compared with Paris: 15 h 27 min against 16 h 11 min.

36°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); Castelnau-le-Lez ranks joint 73rd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.76 kWh a day here, against 1.86 kWh on average in France. The shortest day lasts 8 h 56 min, +41 min compared with Paris.

The sunniest places in France

Solar forecast for Castelnau-le-Lez, 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 Castelnau-le-Lez

What is the best solar panel angle in Castelnau-le-Lez?
For a fixed array facing south, the best year-round tilt in Castelnau-le-Lez is 36°, worth about 1492 kWh per kWp a year. An off-grid system that has to get through December does better at about 67°.
What time is sunrise and sunset in Castelnau-le-Lez today?
On 24 October 2026 the sun rises at 08:09 and sets at 18:46 local time (UTC+2), giving 10 h 37 min of daylight. Solar noon is at 13:28.
How many peak sun hours does Castelnau-le-Lez get?
On a flat surface 4.2 hours a day averaged over the year, from 1.5 in December to 7.1 in July. Panels tilted at 70° receive 3.1 sun hours a day in December.
How high does the sun get in Castelnau-le-Lez?
At solar noon the sun stands 69.8° above the horizon on the June solstice and 23.0° on the December solstice.
Is Castelnau-le-Lez a good place for solar panels?
With 4.2 peak sun hours a day on flat ground, Castelnau-le-Lez ranks joint 73rd of 657 places in France for sunshine. A 1 kWp array at the best angle (36°) makes about 1,492 kWh a year here, 18% more than the average place in France.

Places near Castelnau-le-Lez

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.