Salta · Argentina · 23.39° S · 64.43° W
Solar position in Santa Rosa
Sun position, daylight and the best solar panel angle for Santa Rosa — computed for 23.39° S, 64.43° W, 341 m above sea level.
The sun right now
Sun in Santa Rosa today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:18 | sun 18° below horizon |
| Nautical dawn | 05:46 | 12° below |
| Civil dawn | 06:14 | 6° below |
| Sunrise | 06:37 | 103° ESE |
| Golden hour ends | 07:07 | sun 6° up |
| Solar noon | 13:01 | 78.5° high |
| Golden hour starts | 18:56 | sun 6° up |
| Sunset | 19:26 | 257° WSW |
| Civil dusk | 19:49 | 6° below |
| Nautical dusk | 20:17 | 12° below |
| Astronomical dusk | 20:45 | 18° below |
| Day length | 12 h 49 min | |
Sun path diagram for Santa Rosa
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 43.2° at solar noon in Santa Rosa; on the December solstice only 90.0°. Sunrise swings from 65° ENE in June to 116° ESE in December — a 51° 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 | 06:49 | 13:29 | 20:08 | 13 h 20 min | 86.4° |
| February | 07:09 | 13:31 | 19:52 | 12 h 44 min | 77.0° |
| March | 07:21 | 13:24 | 19:27 | 12 h 06 min | 66.2° |
| April | 07:33 | 13:16 | 18:58 | 11 h 25 min | 54.6° |
| May | 07:47 | 13:14 | 18:41 | 10 h 54 min | 46.3° |
| June | 07:58 | 13:19 | 18:40 | 10 h 42 min | 43.2° |
| July | 07:57 | 13:24 | 18:51 | 10 h 54 min | 46.2° |
| August | 07:38 | 13:20 | 19:03 | 11 h 25 min | 54.7° |
| September | 07:08 | 13:10 | 19:13 | 12 h 05 min | 66.1° |
| October | 06:39 | 13:02 | 19:25 | 12 h 45 min | 77.5° |
| November | 06:23 | 13:03 | 19:43 | 13 h 20 min | 86.6° |
| December | 06:28 | 13:15 | 20:03 | 13 h 35 min | 90.0° |
A year of daylight in Santa Rosa
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 Santa Rosa
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
22°collects the most energy over a year: 1484 kWh per kWp.
35°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 | May kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1390 | 94% | 2.68 | 1.9× |
| 15° | 1474 | 99% | 3.17 | 1.5× |
| 22° year-round best | 1484 | 100% | 3.33 | 1.4× |
| 23° = latitude | 1484 | 100% | 3.35 | 1.4× |
| 30° | 1472 | 99% | 3.47 | 1.4× |
| 35° off-grid best | 1453 | 98% | 3.52 | 1.4× |
| 45° | 1386 | 93% | 3.56 | 1.5× |
| 60° | 1223 | 82% | 3.45 | 1.9× |
| 70° | 1078 | 73% | 3.25 | 2.3× |
| 90° | 746 | 50% | 2.62 | 3.3× |
A fixed array in Santa Rosa produces the most over a year at 22°. The design month for an off-grid system is May: at 35° it makes 3.52 kWh per kWp a day, 6% more than at 22°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Santa Rosa at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 22° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 22° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.04 | 2.52 | 2.01 | 4.42 | 26.7 °C |
| February | 5.50 | 3.02 | 2.45 | 4.29 | 25.5 °C |
| March | 4.63 | 3.34 | 2.74 | 3.88 | 24.2 °C |
| April | 3.80 | 3.55 | 2.94 | 3.47 | 22.1 °C |
| May | 3.33 | 3.87 | 3.25 | 3.33 | 18.6 °C |
| June | 3.18 | 4.15 | 3.52 | 3.36 | 17.0 °C |
| July | 3.67 | 4.81 | 4.08 | 3.91 | 16.8 °C |
| August | 4.59 | 5.09 | 4.27 | 4.55 | 19.7 °C |
| September | 5.19 | 4.27 | 3.53 | 4.60 | 22.8 °C |
| October | 5.44 | 3.26 | 2.65 | 4.34 | 26.2 °C |
| November | 5.93 | 2.62 | 2.10 | 4.40 | 27.1 °C |
| December | 5.90 | 2.33 | 1.86 | 4.25 | 27.0 °C |
| Year | 4.76 avg | 3.57 avg | 1078 kWh | 1484 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 630 Wp of panels at 70°, versus 350 Wp at 22°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Santa Rosa
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.
2.9 mrow pitch at 70°
2.7 mrow pitch at 22°
How Santa Rosa compares in Argentina
Against the other 313 places in Argentina with climate data, for a fixed array at its best angle.
260thof 314 places in Argentina for sunshine, shared: 4.76 peak sun hours a day on flat ground.
−9%solar energy a year compared with the average place in Argentina: 1,484 against 1,639 kWh per kWp.
−54 mindaylight on the longest day, compared with Buenos Aires: 13 h 35 min against 14 h 29 min.
22°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); Santa Rosa ranks joint 260th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.86 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 10 h 42 min, +52 min compared with Buenos Aires.
Solar forecast for Santa Rosa, 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 Santa Rosa
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Places near Santa Rosa
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A free, live card for Santa Rosa: 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.