La Pampa · Argentina · 36.62° S · 64.29° W
Solar position in Santa Rosa
Sun position, daylight and the best solar panel angle for Santa Rosa — computed for 36.62° S, 64.29° W, 163 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 | 04:48 | sun 18° below horizon |
| Nautical dawn | 05:22 | 12° below |
| Civil dawn | 05:54 | 6° below |
| Sunrise | 06:21 | 105° ESE |
| Golden hour ends | 06:56 | sun 6° up |
| Solar noon | 13:01 | 65.3° high |
| Golden hour starts | 19:06 | sun 6° up |
| Sunset | 19:41 | 254° WSW |
| Civil dusk | 20:09 | 6° below |
| Nautical dusk | 20:41 | 12° below |
| Astronomical dusk | 21:15 | 18° below |
| Day length | 13 h 21 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 30.0° at solar noon in Santa Rosa; on the December solstice only 76.8°. Sunrise swings from 61° ENE in June to 120° ESE in December — a 59° 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 | 06:21 | 13:28 | 20:34 | 14 h 13 min | 73.2° |
| February | 06:54 | 13:30 | 20:05 | 13 h 11 min | 63.8° |
| March | 07:21 | 13:24 | 19:26 | 12 h 06 min | 53.0° |
| April | 07:47 | 13:15 | 18:43 | 10 h 56 min | 41.4° |
| May | 08:12 | 13:13 | 18:14 | 10 h 02 min | 33.1° |
| June | 08:29 | 13:19 | 18:08 | 9 h 39 min | 30.0° |
| July | 08:23 | 13:23 | 18:24 | 10 h 01 min | 33.0° |
| August | 07:52 | 13:20 | 18:48 | 10 h 56 min | 41.5° |
| September | 07:07 | 13:10 | 19:12 | 12 h 05 min | 52.9° |
| October | 06:25 | 13:01 | 19:39 | 13 h 14 min | 64.3° |
| November | 05:55 | 13:03 | 20:10 | 14 h 15 min | 73.4° |
| December | 05:55 | 13:15 | 20:35 | 14 h 40 min | 76.8° |
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.
32°collects the most energy over a year: 1688 kWh per kWp.
60°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° | 1466 | 87% | 1.78 | 3.6× |
| 15° | 1626 | 96% | 2.49 | 2.5× |
| 30° | 1687 | 100% | 3.05 | 1.9× |
| 32° year-round best | 1688 | 100% | 3.11 | 1.8× |
| 37° = latitude | 1681 | 100% | 3.25 | 1.7× |
| 45° | 1648 | 98% | 3.41 | 1.5× |
| 60° off-grid best | 1511 | 90% | 3.56 | 1.3× |
| 70° | 1371 | 81% | 3.53 | 1.3× |
| 90° | 999 | 59% | 3.17 | 2.2× |
A fixed array in Santa Rosa produces the most over a year at 32°. The design month for an off-grid system is June: at 60° it makes 3.56 kWh per kWp a day, 14% more than at 32°, and costs 10% 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 32° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 32° | Mean temp. |
|---|---|---|---|---|---|
| January | 7.76 | 4.11 | 3.36 | 5.72 | 24.9 °C |
| February | 6.74 | 4.71 | 3.88 | 5.58 | 23.3 °C |
| March | 5.34 | 5.12 | 4.28 | 5.13 | 20.1 °C |
| April | 3.80 | 5.01 | 4.27 | 4.36 | 15.4 °C |
| May | 2.56 | 4.04 | 3.50 | 3.27 | 10.9 °C |
| June | 2.20 | 4.01 | 3.53 | 3.11 | 7.5 °C |
| July | 2.34 | 3.96 | 3.49 | 3.16 | 7.0 °C |
| August | 3.30 | 4.68 | 4.09 | 4.02 | 9.3 °C |
| September | 4.52 | 4.83 | 4.16 | 4.69 | 12.4 °C |
| October | 5.73 | 4.50 | 3.82 | 5.11 | 15.8 °C |
| November | 7.28 | 4.22 | 3.52 | 5.67 | 19.9 °C |
| December | 7.95 | 3.90 | 3.20 | 5.73 | 23.2 °C |
| Year | 4.95 avg | 4.42 avg | 1371 kWh | 1688 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 370 Wp of panels at 70°, versus 380 Wp at 32°. The steep array is 3% smaller for the same winter. 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.
4.4 mrow pitch at 70°
3.8 mrow pitch at 32°
How Santa Rosa compares in Argentina
Against the other 313 places in Argentina with climate data, for a fixed array at its best angle.
98thof 314 places in Argentina for sunshine, shared: 4.95 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Argentina: 1,688 against 1,639 kWh per kWp.
+11 mindaylight on the longest day, compared with Buenos Aires: 14 h 40 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); Santa Rosa ranks joint 98th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 3.20 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 9 h 39 min, −11 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
What is the best solar panel angle 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.