Solarposition.org

Cordoba · Argentina · 33.13° S · 64.35° W

Solar position in Río Cuarto

Sun position, daylight and the best solar panel angle for Río Cuarto — computed for 33.13° S, 64.35° W, 429 m above sea level.

Sunrise today06:26105° ESE
Sunset today19:37255° WSW
Best panel angle30°year-round, facing north
Off-grid angle54°best for the darkest month

The sun right now

Azimuth180.0°
Elevation68.8°
At solar noon, 13:01Open on the sun map

Sun in Río Cuarto today

Saturday, 24 October 2026 · local time UTC−3

EventTimeDirection / height
Astronomical dawn04:58sun 18° below horizon
Nautical dawn05:2912° below
Civil dawn06:006° below
Sunrise06:26105° ESE
Golden hour ends06:59sun 6° up
Solar noon13:0168.8° high
Golden hour starts19:04sun 6° up
Sunset19:37255° WSW
Civil dusk20:036° below
Nautical dusk20:3412° below
Astronomical dusk21:0518° below
Day length13 h 11 min

Sun path diagram for Río Cuarto

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice9101112131415161718EquinoxDecember solstice7891011121314151617181920Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 33.5° at solar noon in Río Cuarto; on the December solstice only 80.3°. Sunrise swings from 62° ENE in June to 119° ESE in December — a 57° 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January06:2913:2820:2713 h 58 min76.7°
February06:5913:3020:0213 h 03 min67.3°
March07:2113:2419:2712 h 06 min56.5°
April07:4313:1518:4711 h 04 min44.9°
May08:0513:1318:2210 h 17 min36.6°
June08:2013:1918:189 h 58 min33.5°
July08:1513:2418:3210 h 17 min36.5°
August07:4813:2018:5311 h 05 min44.9°
September07:0813:1019:1312 h 05 min56.4°
October06:2913:0219:3513 h 06 min67.7°
November06:0413:0320:0213 h 59 min76.9°
December06:0513:1520:2514 h 21 min80.3°

A year of daylight in Río Cuarto

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Río Cuarto

Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

30°collects the most energy over a year: 1687 kWh per kWp.

54°gives the most in the darkest month — the one an off-grid system is sized for.

30%40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 30°Best worst-month 54°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearMay kWh/kWp/dayBest ÷ worst month
0°148888%2.372.8×
15°163797%3.042.0×
30° year-round best1687100%3.521.5×
33° = latitude1685100%3.591.5×
45°163697%3.781.3×
54° off-grid best155992%3.831.3×
60°149088%3.811.3×
70°134480%3.701.6×
90°96757%3.172.8×

A fixed array in Río Cuarto produces the most over a year at 30°. The design month for an off-grid system is May: at 54° it makes 3.83 kWh per kWp a day, 9% more than at 30°, and costs 8% of the yearly total. Why steep panels win winter.

Off-grid solar in Río Cuarto at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 30° (year-round best).

0123456January: 2.91 (70°)2.9JanFebruary: 3.37 (70°)3.4FebMarch: 3.91 (70°)3.9MarApril: 4.01 (70°)4.0AprMay: 3.70 (70°)3.7MayJune: 4.02 (70°)4.0JunJuly: 4.04 (70°)4.0JulAugust: 4.47 (70°)4.5AugSeptember: 4.28 (70°)4.3SepOctober: 3.60 (70°)3.6OctNovember: 3.08 (70°)3.1NovDecember: 2.77 (70°)2.8Dec30°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 30°Mean temp.
January7.273.562.915.3224.0 °C
February6.274.093.375.1022.5 °C
March5.284.683.914.8920.2 °C
April3.904.724.014.2216.3 °C
May2.914.283.703.5212.2 °C
June2.674.594.023.589.1 °C
July2.854.614.043.698.5 °C
August3.825.154.474.4610.8 °C
September4.954.994.284.9713.9 °C
October5.854.283.605.0717.6 °C
November6.963.723.085.3220.7 °C
December7.473.382.775.3523.0 °C
Year5.01 avg4.34 avg1344 kWh1687 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 430 Wp of panels at 70°, versus 330 Wp at 30°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Río Cuarto

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.

3.9 mrow pitch at 70°

3.4 mrow pitch at 30°

Row spacing calculator

How Río Cuarto compares in Argentina

Against the other 313 places in Argentina with climate data, for a fixed array at its best angle.

76thof 314 places in Argentina for sunshine: 5.01 peak sun hours a day on flat ground.

+3%solar energy a year compared with the average place in Argentina: 1,687 against 1,639 kWh per kWp.

−8 mindaylight on the longest day, compared with Buenos Aires: 14 h 21 min against 14 h 29 min.

30°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); Río Cuarto ranks 76th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.77 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 9 h 58 min, +8 min compared with Buenos Aires.

The sunniest places in Argentina

Solar forecast for Río Cuarto, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in Río Cuarto

What is the best solar panel angle in Río Cuarto?
For a fixed array facing north, the best year-round tilt in Río Cuarto is 30°, worth about 1687 kWh per kWp a year. An off-grid system that has to get through May does better at about 54°.
What time is sunrise and sunset in Río Cuarto today?
On 24 October 2026 the sun rises at 06:26 and sets at 19:37 local time (UTC−3), giving 13 h 11 min of daylight. Solar noon is at 13:01.
How many peak sun hours does Río Cuarto get?
On a flat surface 5.0 hours a day averaged over the year, from 2.7 in June to 7.5 in December. Panels tilted at 70° receive 3.4 sun hours a day in December.
How high does the sun get in Río Cuarto?
At solar noon the sun stands 33.5° above the horizon on the June solstice and 80.3° on the December solstice.
Is Río Cuarto a good place for solar panels?
With 5.0 peak sun hours a day on flat ground, Río Cuarto ranks 76th of 314 places in Argentina for sunshine. A 1 kWp array at the best angle (30°) makes about 1,687 kWh a year here, 3% more than the average place in Argentina.

Places near Río Cuarto

All places in Argentina

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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.