Buenos Aires · Argentina · 38.55° S · 58.74° W
Solar position in Necochea
Sun position, daylight and the best solar panel angle for Necochea — computed for 38.55° S, 58.74° W, 19 m above sea level.
The sun right now
Sun in Necochea today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:20 | sun 18° below horizon |
| Nautical dawn | 04:55 | 12° below |
| Civil dawn | 05:28 | 6° below |
| Sunrise | 05:56 | 106° ESE |
| Golden hour ends | 06:32 | sun 6° up |
| Solar noon | 12:39 | 63.4° high |
| Golden hour starts | 18:46 | sun 6° up |
| Sunset | 19:22 | 254° WSW |
| Civil dusk | 19:50 | 6° below |
| Nautical dusk | 20:23 | 12° below |
| Astronomical dusk | 20:59 | 18° below |
| Day length | 13 h 26 min | |
Sun path diagram for Necochea
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 28.0° at solar noon in Necochea; on the December solstice only 74.9°. Sunrise swings from 60° ENE in June to 121° ESE in December — a 61° 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 | 05:54 | 13:06 | 20:17 | 14 h 23 min | 71.2° |
| February | 06:30 | 13:08 | 19:46 | 13 h 16 min | 61.8° |
| March | 06:58 | 13:01 | 19:04 | 12 h 06 min | 51.0° |
| April | 07:28 | 12:53 | 18:18 | 10 h 51 min | 39.4° |
| May | 07:55 | 12:51 | 17:47 | 9 h 52 min | 31.2° |
| June | 08:12 | 12:56 | 17:40 | 9 h 28 min | 28.0° |
| July | 08:05 | 13:01 | 17:57 | 9 h 52 min | 31.1° |
| August | 07:32 | 12:58 | 18:23 | 10 h 51 min | 39.5° |
| September | 06:45 | 12:48 | 18:50 | 12 h 05 min | 50.9° |
| October | 06:00 | 12:39 | 19:19 | 13 h 19 min | 62.3° |
| November | 05:28 | 12:40 | 19:53 | 14 h 25 min | 71.5° |
| December | 05:27 | 12:53 | 20:19 | 14 h 52 min | 74.9° |
A year of daylight in Necochea
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 Necochea
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
32°collects the most energy over a year: 1582 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 | June kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1370 | 87% | 1.48 | 4.2× |
| 15° | 1520 | 96% | 2.07 | 3.0× |
| 30° | 1581 | 100% | 2.53 | 2.3× |
| 32° year-round best | 1582 | 100% | 2.58 | 2.2× |
| 39° = latitude | 1572 | 99% | 2.74 | 2.0× |
| 45° | 1548 | 98% | 2.84 | 1.8× |
| 60° | 1425 | 90% | 2.96 | 1.5× |
| 63° off-grid best | 1390 | 88% | 2.96 | 1.5× |
| 70° | 1297 | 82% | 2.94 | 1.4× |
| 90° | 956 | 60% | 2.66 | 1.9× |
A fixed array in Necochea produces the most over a year at 32°. The design month for an off-grid system is June: at 63° it makes 2.96 kWh per kWp a day, 15% more than at 32°, and costs 12% of the yearly total. Why steep panels win winter.
Off-grid solar in Necochea at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 32° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 32° | Mean temp. |
|---|---|---|---|---|---|
| January | 7.37 | 4.16 | 3.45 | 5.64 | 20.7 °C |
| February | 6.32 | 4.62 | 3.85 | 5.37 | 20.5 °C |
| March | 4.96 | 4.90 | 4.12 | 4.85 | 18.6 °C |
| April | 3.50 | 4.68 | 3.99 | 4.03 | 15.3 °C |
| May | 2.33 | 3.74 | 3.23 | 2.98 | 12.1 °C |
| June | 1.86 | 3.37 | 2.94 | 2.58 | 9.2 °C |
| July | 2.02 | 3.40 | 2.98 | 2.69 | 8.1 °C |
| August | 2.87 | 4.07 | 3.56 | 3.47 | 9.0 °C |
| September | 4.15 | 4.52 | 3.92 | 4.36 | 10.3 °C |
| October | 5.39 | 4.40 | 3.78 | 4.93 | 12.8 °C |
| November | 6.82 | 4.17 | 3.53 | 5.49 | 15.8 °C |
| December | 7.57 | 3.99 | 3.33 | 5.68 | 18.8 °C |
| Year | 4.59 avg | 4.16 avg | 1297 kWh | 1582 kWh |
Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 400 Wp of panels at 70°, versus 460 Wp at 32°. The steep array is 12% smaller for the same winter. Size your own system.
Row spacing in Necochea
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.
4.7 mrow pitch at 70°
4.0 mrow pitch at 32°
How Necochea compares in Argentina
Against the other 313 places in Argentina with climate data, for a fixed array at its best angle.
291stof 314 places in Argentina for sunshine, shared: 4.59 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Argentina: 1,582 against 1,639 kWh per kWp.
+23 mindaylight on the longest day, compared with Buenos Aires: 14 h 52 min against 14 h 29 min.
32°best year-round tilt here; across Argentina it runs from 21° in Tartagal to 44° in Río Gallegos.
Of the 314 places in Argentina, Belén gets the most sun (6.11 peak sun hours a day) and Ushuaia the least (2.59); Necochea ranks joint 291st. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.94 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 9 h 28 min, −22 min compared with Buenos Aires.
Solar forecast for Necochea, 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 Necochea
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A free, live card for Necochea: 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.