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Tuscany · Italy · 43.39° N · 10.44° E

Solar position in Rosignano Solvay-Castiglioncello

Sun position, daylight and the best solar panel angle for Rosignano Solvay-Castiglioncello — computed for 43.39° N, 10.44° E, 13 m above sea level.

Sunrise today07:43105° ESE
Sunset today18:21254° WSW
Best panel angle35°year-round, facing south
Off-grid angle67°best for the darkest month

The sun right now

Azimuth180.0°
Elevation34.8°
At solar noon, 13:02Open on the sun map

Sun in Rosignano Solvay-Castiglioncello today

Saturday, 24 October 2026 · local time UTC+2

EventTimeDirection / height
Astronomical dawn06:07sun 18° below horizon
Nautical dawn06:4012° below
Civil dawn07:136° below
Sunrise07:43105° ESE
Golden hour ends08:22sun 6° up
Solar noon13:0234.8° high
Golden hour starts17:41sun 6° up
Sunset18:21254° WSW
Civil dusk18:506° below
Nautical dusk19:2312° below
Astronomical dusk19:5618° below
Day length10 h 38 min

Sun path diagram for Rosignano Solvay-Castiglioncello

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 solstice67891011121314151617181920EquinoxDecember solstice8910111213141516Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 70.1° at solar noon in Rosignano Solvay-Castiglioncello; on the December solstice only 23.2°. Sunrise swings from 56° NE in June to 122° ESE in December — a 66° 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
January07:4412:2917:159 h 31 min26.8°
February07:0712:3217:5610 h 49 min36.2°
March06:1912:2518:3112 h 12 min47.0°
April06:2613:1720:0813 h 42 min58.6°
May05:4813:1420:4114 h 54 min66.9°
June05:3713:2021:0215 h 25 min70.1°
July05:5613:2420:5214 h 55 min67.0°
August06:2913:2120:1213 h 42 min58.6°
September07:0413:1119:1712 h 13 min47.2°
October07:3913:0218:2510 h 46 min35.8°
November07:1912:0316:489 h 30 min26.7°
December07:4712:1616:458 h 58 min23.2°

A year of daylight in Rosignano Solvay-Castiglioncello

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 Rosignano Solvay-Castiglioncello

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

35°collects the most energy over a year: 1464 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 35°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°123885%1.065.4×
15°139095%1.603.7×
30°1459100%2.032.8×
35° year-round best1464100%2.152.6×
43° = latitude145199%2.312.3×
45°144499%2.342.2×
60°134592%2.501.8×
67° off-grid best127287%2.521.6×
70°123684%2.511.6×
90°93464%2.331.5×

A fixed array in Rosignano Solvay-Castiglioncello produces the most over a year at 35°. The design month for an off-grid system is December: at 67° it makes 2.52 kWh per kWp a day, 17% more than at 35°, and costs 13% of the yearly total. Why steep panels win winter.

Off-grid solar in Rosignano Solvay-Castiglioncello at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 35° (year-round best).

0123456January: 2.68 (70°)2.7JanFebruary: 3.27 (70°)3.3FebMarch: 3.72 (70°)3.7MarApril: 3.75 (70°)3.7AprMay: 3.56 (70°)3.6MayJune: 3.47 (70°)3.5JunJuly: 3.64 (70°)3.6JulAugust: 3.95 (70°)4.0AugSeptember: 4.02 (70°)4.0SepOctober: 3.43 (70°)3.4OctNovember: 2.62 (70°)2.6NovDecember: 2.51 (70°)2.5Dec35°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 35°Mean temp.
January1.603.082.682.369.9 °C
February2.483.763.273.169.9 °C
March3.734.303.724.0311.7 °C
April5.094.393.754.6914.3 °C
May6.214.243.565.0717.7 °C
June7.094.213.475.3721.8 °C
July7.244.453.645.5224.5 °C
August6.244.833.955.2924.9 °C
September4.624.844.024.5821.9 °C
October2.974.083.433.4518.4 °C
November1.773.072.622.3914.5 °C
December1.382.912.512.1511.2 °C
Year4.21 avg4.01 avg1236 kWh1464 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 470 Wp of panels at 70°, versus 550 Wp at 35°. The steep array is 14% smaller for the same winter. Size your own system.

Row spacing in Rosignano Solvay-Castiglioncello

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.

5.8 mrow pitch at 70°

4.8 mrow pitch at 35°

Row spacing calculator

How Rosignano Solvay-Castiglioncello compares in Italy

Against the other 596 places in Italy with climate data, for a fixed array at its best angle.

295thof 597 places in Italy for sunshine, shared: 4.21 peak sun hours a day on flat ground.

+1%solar energy a year compared with the average place in Italy: 1,464 against 1,452 kWh per kWp.

+11 mindaylight on the longest day, compared with Rome: 15 h 25 min against 15 h 14 min.

35°best year-round tilt here; across Italy it runs from 30° in Palermo to 42° in Bolzano.

Of the 597 places in Italy, Pozzallo and one other place get the most sun (4.91 peak sun hours a day) and Bressanone the least (3.51); Rosignano Solvay-Castiglioncello ranks joint 295th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.51 kWh a day here, against 2.63 kWh on average in Italy. The shortest day lasts 8 h 58 min, −10 min compared with Rome.

The sunniest places in Italy

Solar forecast for Rosignano Solvay-Castiglioncello, 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 Rosignano Solvay-Castiglioncello

What is the best solar panel angle in Rosignano Solvay-Castiglioncello?
For a fixed array facing south, the best year-round tilt in Rosignano Solvay-Castiglioncello is 35°, worth about 1464 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 Rosignano Solvay-Castiglioncello today?
On 24 October 2026 the sun rises at 07:43 and sets at 18:21 local time (UTC+2), giving 10 h 38 min of daylight. Solar noon is at 13:02.
How many peak sun hours does Rosignano Solvay-Castiglioncello get?
On a flat surface 4.2 hours a day averaged over the year, from 1.4 in December to 7.2 in July. Panels tilted at 70° receive 2.9 sun hours a day in December.
How high does the sun get in Rosignano Solvay-Castiglioncello?
At solar noon the sun stands 70.1° above the horizon on the June solstice and 23.2° on the December solstice.
Is Rosignano Solvay-Castiglioncello a good place for solar panels?
With 4.2 peak sun hours a day on flat ground, Rosignano Solvay-Castiglioncello ranks joint 295th of 597 places in Italy for sunshine. A 1 kWp array at the best angle (35°) makes about 1,464 kWh a year here, 1% more than the average place in Italy.

Places near Rosignano Solvay-Castiglioncello

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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.