Catalonia · Spain · 40.81° N · 0.52° E
Solar position in Tortosa
Sun position, daylight and the best solar panel angle for Tortosa — computed for 40.81° N, 0.52° E, 18 m above sea level.
The sun right now
Sun in Tortosa today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:47 | sun 18° below horizon |
| Nautical dawn | 07:19 | 12° below |
| Civil dawn | 07:51 | 6° below |
| Sunrise | 08:19 | 105° ESE |
| Golden hour ends | 08:57 | sun 6° up |
| Solar noon | 13:41 | 37.4° high |
| Golden hour starts | 18:26 | sun 6° up |
| Sunset | 19:04 | 255° WSW |
| Civil dusk | 19:32 | 6° below |
| Nautical dusk | 20:04 | 12° below |
| Astronomical dusk | 20:36 | 18° below |
| Day length | 10 h 46 min | |
Sun path diagram for Tortosa
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 72.6° at solar noon in Tortosa; on the December solstice only 25.8°. Sunrise swings from 57° ENE in June to 121° ESE in December — a 63° 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 | 08:17 | 13:09 | 18:01 | 9 h 45 min | 29.4° |
| February | 07:43 | 13:11 | 18:39 | 10 h 56 min | 38.8° |
| March | 06:59 | 13:05 | 19:10 | 12 h 11 min | 49.6° |
| April | 07:10 | 13:56 | 20:43 | 13 h 33 min | 61.2° |
| May | 06:35 | 13:54 | 21:14 | 14 h 39 min | 69.4° |
| June | 06:26 | 13:59 | 21:32 | 15 h 06 min | 72.6° |
| July | 06:44 | 14:04 | 21:24 | 14 h 40 min | 69.6° |
| August | 07:13 | 14:00 | 20:47 | 13 h 34 min | 61.2° |
| September | 07:44 | 13:50 | 19:56 | 12 h 13 min | 49.8° |
| October | 08:15 | 13:42 | 19:08 | 10 h 53 min | 38.4° |
| November | 07:51 | 12:43 | 17:35 | 9 h 44 min | 29.2° |
| December | 08:18 | 12:55 | 17:33 | 9 h 15 min | 25.8° |
A year of daylight in Tortosa
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 Tortosa
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: 1599 kWh per kWp.
66°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° | 1347 | 84% | 1.45 | 4.0× |
| 15° | 1515 | 95% | 2.15 | 2.7× |
| 30° | 1593 | 100% | 2.71 | 2.1× |
| 35° year-round best | 1599 | 100% | 2.86 | 1.9× |
| 41° = latitude | 1591 | 100% | 3.01 | 1.7× |
| 45° | 1577 | 99% | 3.09 | 1.6× |
| 60° | 1469 | 92% | 3.28 | 1.4× |
| 66° off-grid best | 1401 | 88% | 3.29 | 1.3× |
| 70° | 1349 | 84% | 3.28 | 1.3× |
| 90° | 1017 | 64% | 3.02 | 1.9× |
A fixed array in Tortosa produces the most over a year at 35°. The design month for an off-grid system is December: at 66° it makes 3.29 kWh per kWp a day, 15% more than at 35°, and costs 12% of the yearly total. Why steep panels win winter.
Off-grid solar in Tortosa at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 35° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 35° | Mean temp. |
|---|---|---|---|---|---|
| January | 2.13 | 4.04 | 3.54 | 3.16 | 8.4 °C |
| February | 3.10 | 4.66 | 4.08 | 3.97 | 8.7 °C |
| March | 4.33 | 4.88 | 4.23 | 4.66 | 11.3 °C |
| April | 5.47 | 4.52 | 3.86 | 4.97 | 13.9 °C |
| May | 6.48 | 4.17 | 3.50 | 5.18 | 17.6 °C |
| June | 7.24 | 4.04 | 3.33 | 5.35 | 22.3 °C |
| July | 7.23 | 4.22 | 3.44 | 5.39 | 25.1 °C |
| August | 6.22 | 4.58 | 3.74 | 5.15 | 25.1 °C |
| September | 4.82 | 4.80 | 3.99 | 4.66 | 21.5 °C |
| October | 3.45 | 4.60 | 3.88 | 3.97 | 17.7 °C |
| November | 2.32 | 4.06 | 3.51 | 3.22 | 12.2 °C |
| December | 1.84 | 3.75 | 3.28 | 2.86 | 9.1 °C |
| Year | 4.56 avg | 4.36 avg | 1349 kWh | 1599 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 360 Wp of panels at 70°, versus 410 Wp at 35°. The steep array is 13% smaller for the same winter. Size your own system.
Row spacing in Tortosa
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.
5.2 mrow pitch at 70°
4.4 mrow pitch at 35°
How Tortosa compares in Spain
Against the other 543 places in Spain with climate data, for a fixed array at its best angle.
353rdof 544 places in Spain for sunshine, shared: 4.56 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Spain: 1,598 against 1,601 kWh per kWp.
+3 mindaylight on the longest day, compared with Madrid: 15 h 06 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); Tortosa ranks joint 353rd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 3.28 kWh a day here, against 3.03 kWh on average in Spain. The shortest day lasts 9 h 15 min, −2 min compared with Madrid.
Solar forecast for Tortosa, 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 Tortosa
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Places near Tortosa
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A free, live card for Tortosa: 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.