Basque Country · Spain · 43.32° N · 3.02° W
Solar position in Portugalete
Sun position, daylight and the best solar panel angle for Portugalete — computed for 43.32° N, 3.02° W, 49 m above sea level.
The sun right now
Sun in Portugalete today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 07:01 | sun 18° below horizon |
| Nautical dawn | 07:34 | 12° below |
| Civil dawn | 08:07 | 6° below |
| Sunrise | 08:36 | 105° ESE |
| Golden hour ends | 09:16 | sun 6° up |
| Solar noon | 13:56 | 34.8° high |
| Golden hour starts | 18:35 | sun 6° up |
| Sunset | 19:15 | 254° WSW |
| Civil dusk | 19:44 | 6° below |
| Nautical dusk | 20:17 | 12° below |
| Astronomical dusk | 20:50 | 18° below |
| Day length | 10 h 38 min | |
Sun path diagram for Portugalete
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 70.1° at solar noon in Portugalete; 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.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 08:37 | 13:23 | 18:09 | 9 h 31 min | 26.9° |
| February | 08:01 | 13:25 | 18:50 | 10 h 49 min | 36.3° |
| March | 07:13 | 13:19 | 19:25 | 12 h 12 min | 47.0° |
| April | 07:20 | 14:10 | 21:01 | 13 h 42 min | 58.7° |
| May | 06:42 | 14:08 | 21:35 | 14 h 53 min | 66.9° |
| June | 06:31 | 14:13 | 21:55 | 15 h 24 min | 70.1° |
| July | 06:50 | 14:18 | 21:45 | 14 h 55 min | 67.1° |
| August | 07:23 | 14:15 | 21:05 | 13 h 42 min | 58.7° |
| September | 07:58 | 14:04 | 20:11 | 12 h 13 min | 47.3° |
| October | 08:33 | 13:56 | 19:19 | 10 h 46 min | 35.9° |
| November | 08:12 | 12:57 | 17:42 | 9 h 30 min | 26.7° |
| December | 08:41 | 13:10 | 17:39 | 8 h 58 min | 23.3° |
A year of daylight in Portugalete
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Portugalete
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
34°collects the most energy over a year: 1293 kWh per kWp.
63°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1104 | 85% | 1.02 | 4.8× |
| 15° | 1232 | 95% | 1.47 | 3.4× |
| 30° | 1290 | 100% | 1.84 | 2.6× |
| 34° year-round best | 1293 | 100% | 1.92 | 2.5× |
| 43° = latitude | 1281 | 99% | 2.06 | 2.2× |
| 45° | 1275 | 99% | 2.09 | 2.1× |
| 60° | 1188 | 92% | 2.21 | 1.8× |
| 63° off-grid best | 1162 | 90% | 2.22 | 1.8× |
| 70° | 1093 | 85% | 2.21 | 1.7× |
| 90° | 833 | 64% | 2.04 | 1.5× |
A fixed array in Portugalete produces the most over a year at 34°. The design month for an off-grid system is December: at 63° it makes 2.22 kWh per kWp a day, 16% more than at 34°, and costs 10% of the yearly total. Why steep panels win winter.
Off-grid solar in Portugalete at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 34° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 34° | Mean temp. |
|---|---|---|---|---|---|
| January | 1.43 | 2.50 | 2.18 | 1.95 | 8.7 °C |
| February | 2.26 | 3.21 | 2.80 | 2.74 | 8.6 °C |
| March | 3.49 | 3.87 | 3.36 | 3.67 | 10.3 °C |
| April | 4.60 | 3.92 | 3.37 | 4.23 | 12.0 °C |
| May | 5.50 | 3.79 | 3.22 | 4.55 | 14.5 °C |
| June | 5.92 | 3.65 | 3.05 | 4.62 | 17.9 °C |
| July | 5.98 | 3.82 | 3.18 | 4.72 | 20.0 °C |
| August | 5.30 | 4.11 | 3.42 | 4.54 | 20.7 °C |
| September | 4.26 | 4.36 | 3.66 | 4.20 | 18.9 °C |
| October | 2.78 | 3.67 | 3.11 | 3.15 | 16.2 °C |
| November | 1.66 | 2.77 | 2.38 | 2.18 | 11.9 °C |
| December | 1.31 | 2.55 | 2.21 | 1.92 | 9.5 °C |
| Year | 3.71 avg | 3.52 avg | 1093 kWh | 1293 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 540 Wp of panels at 70°, versus 620 Wp at 34°. The steep array is 12% smaller for the same winter. Size your own system.
Row spacing in Portugalete
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°
4.7 mrow pitch at 34°
How Portugalete compares in Spain
Against the other 543 places in Spain with climate data, for a fixed array at its best angle.
530thof 544 places in Spain for sunshine, shared: 3.71 peak sun hours a day on flat ground.
−19%solar energy a year compared with the average place in Spain: 1,293 against 1,601 kWh per kWp.
+20 mindaylight on the longest day, compared with Madrid: 15 h 24 min against 15 h 04 min.
34°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); Portugalete ranks joint 530th. In its darkest month, January, 1 kWp of off-grid panels at 70° makes 2.18 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.
Solar forecast for Portugalete, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Portugalete
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Places near Portugalete
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A free, live card for Portugalete: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
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.