Solarposition.org

Basque Country · Spain · 43.31° N · 1.97° W

Solar position in Donostia / San Sebastián

Sun position, daylight and the best solar panel angle for Donostia / San Sebastián — computed for 43.31° N, 1.97° W, 17 m above sea level.

Sunrise today08:32105° ESE
Sunset today19:10254° WSW
Best panel angle35°year-round, facing south
Off-grid angle63°best for the darkest month

The sun right now

Azimuth180.0°
Elevation34.9°
At solar noon, 13:51Open on the sun map

Sun in Donostia / San Sebastián today

Saturday, 24 October 2026 · local time UTC+2

EventTimeDirection / height
Astronomical dawn06:57sun 18° below horizon
Nautical dawn07:3012° below
Civil dawn08:036° below
Sunrise08:32105° ESE
Golden hour ends09:12sun 6° up
Solar noon13:5134.9° high
Golden hour starts18:31sun 6° up
Sunset19:10254° WSW
Civil dusk19:406° below
Nautical dusk20:1312° below
Astronomical dusk20:4618° below
Day length10 h 38 min

Sun path diagram for Donostia / San Sebastián

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 70.1° at solar noon in Donostia / San Sebastián; on the December solstice only 23.3°. 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
January08:3313:1918:059 h 31 min26.9°
February07:5713:2118:4610 h 49 min36.3°
March07:0913:1519:2112 h 12 min47.1°
April07:1614:0620:5713 h 42 min58.7°
May06:3814:0421:3114 h 53 min66.9°
June06:2714:0921:5115 h 24 min70.1°
July06:4614:1421:4114 h 55 min67.1°
August07:1914:1021:0113 h 42 min58.7°
September07:5314:0020:0712 h 13 min47.3°
October08:2813:5219:1510 h 46 min35.9°
November08:0812:5317:389 h 30 min26.7°
December08:3613:0517:348 h 58 min23.3°

A year of daylight in Donostia / San Sebastián

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 Donostia / San Sebastián

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: 1318 kWh per kWp.

63°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 63°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°112085%1.044.8×
15°125395%1.513.3×
30°1314100%1.892.6×
35° year-round best1318100%2.002.4×
43° = latitude130799%2.132.1×
45°130199%2.162.1×
60°121492%2.291.8×
63° off-grid best118890%2.301.7×
70°111885%2.291.6×
90°85465%2.111.5×

A fixed array in Donostia / San Sebastián produces the most over a year at 35°. The design month for an off-grid system is December: at 63° it makes 2.30 kWh per kWp a day, 15% more than at 35°, and costs 10% of the yearly total. Why steep panels win winter.

Off-grid solar in Donostia / San Sebastián at 70°

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

0123456January: 2.27 (70°)2.3JanFebruary: 2.96 (70°)3.0FebMarch: 3.46 (70°)3.5MarApril: 3.40 (70°)3.4AprMay: 3.23 (70°)3.2MayJune: 3.10 (70°)3.1JunJuly: 3.22 (70°)3.2JulAugust: 3.46 (70°)3.5AugSeptember: 3.72 (70°)3.7SepOctober: 3.17 (70°)3.2OctNovember: 2.50 (70°)2.5NovDecember: 2.29 (70°)2.3Dec35°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 35°Mean temp.
January1.462.612.272.058.0 °C
February2.333.382.962.898.0 °C
March3.563.983.463.7810.1 °C
April4.643.953.404.2512.1 °C
May5.513.803.234.5414.8 °C
June6.033.713.104.6718.3 °C
July6.073.893.224.7620.4 °C
August5.374.173.464.5820.9 °C
September4.334.433.724.2718.9 °C
October2.803.733.173.2215.9 °C
November1.712.892.502.2911.3 °C
December1.332.632.292.008.7 °C
Year3.77 avg3.60 avg1118 kWh1318 kWh

Sizing example. To run a 1 kWh-per-day load through January on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 520 Wp of panels at 70°, versus 590 Wp at 35°. The steep array is 12% smaller for the same winter. Size your own system.

Row spacing in Donostia / San Sebastián

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 Donostia / San Sebastián compares in Spain

Against the other 543 places in Spain with climate data, for a fixed array at its best angle.

512thof 544 places in Spain for sunshine, shared: 3.77 peak sun hours a day on flat ground.

−18%solar energy a year compared with the average place in Spain: 1,318 against 1,601 kWh per kWp.

+20 mindaylight on the longest day, compared with Madrid: 15 h 24 min against 15 h 04 min.

35°best year-round tilt here; across Spain it runs from 24° in Arona to 36° in Girona.

Of the 544 places in Spain, Playa del Ingles and one other place get the most sun (5.53 peak sun hours a day) and Santander the least (3.65); Donostia / San Sebastián ranks joint 512th. In its darkest month, January, 1 kWp of off-grid panels at 70° makes 2.28 kWh a day here, against 3.03 kWh on average in Spain. The shortest day lasts 8 h 58 min, −19 min compared with Madrid.

The sunniest places in Spain

Solar forecast for Donostia / San Sebastián, 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 Donostia / San Sebastián

What is the best solar panel angle in Donostia / San Sebastián?
For a fixed array facing south, the best year-round tilt in Donostia / San Sebastián is 35°, worth about 1318 kWh per kWp a year. An off-grid system that has to get through December does better at about 63°.
What time is sunrise and sunset in Donostia / San Sebastián today?
On 24 October 2026 the sun rises at 08:32 and sets at 19:10 local time (UTC+2), giving 10 h 38 min of daylight. Solar noon is at 13:51.
How many peak sun hours does Donostia / San Sebastián get?
On a flat surface 3.8 hours a day averaged over the year, from 1.3 in December to 6.1 in July. Panels tilted at 70° receive 2.6 sun hours a day in January.
How high does the sun get in Donostia / San Sebastián?
At solar noon the sun stands 70.1° above the horizon on the June solstice and 23.3° on the December solstice.
Is Donostia / San Sebastián a good place for solar panels?
With 3.8 peak sun hours a day on flat ground, Donostia / San Sebastián ranks joint 512th of 544 places in Spain for sunshine. A 1 kWp array at the best angle (35°) makes about 1,318 kWh a year here, 18% less than the average place in Spain.

Places near Donostia / San Sebastián

All places in Spain

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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.