Solarposition.org

Buenos Aires · Argentina · 38.38° S · 60.28° W

Solar position in Tres Arroyos

Sun position, daylight and the best solar panel angle for Tres Arroyos — computed for 38.38° S, 60.28° W, 100 m above sea level.

Sunrise today06:02106° ESE
Sunset today19:28254° WSW
Best panel angle32°year-round, facing north
Off-grid angle63°best for the darkest month

The sun right now

Azimuth180.0°
Elevation63.5°
At solar noon, 12:45Open on the sun map

Sun in Tres Arroyos today

Saturday, 24 October 2026 · local time UTC−3

EventTimeDirection / height
Astronomical dawn04:26sun 18° below horizon
Nautical dawn05:0112° below
Civil dawn05:356° below
Sunrise06:02106° ESE
Golden hour ends06:38sun 6° up
Solar noon12:4563.5° high
Golden hour starts18:52sun 6° up
Sunset19:28254° WSW
Civil dusk19:566° below
Nautical dusk20:2912° below
Astronomical dusk21:0418° below
Day length13 h 26 min

Sun path diagram for Tres Arroyos

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 solstice91011121314151617EquinoxDecember solstice67891011121314151617181920Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 28.2° at solar noon in Tres Arroyos; on the December solstice only 75.1°. 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January06:0113:1220:2314 h 22 min71.4°
February06:3613:1419:5213 h 15 min62.0°
March07:0513:0719:1012 h 06 min51.2°
April07:3312:5918:2510 h 51 min39.6°
May08:0012:5717:549 h 53 min31.4°
June08:1813:0217:479 h 29 min28.2°
July08:1113:0718:049 h 53 min31.3°
August07:3813:0418:3010 h 51 min39.7°
September06:5112:5418:5612 h 05 min51.1°
October06:0612:4519:2513 h 19 min62.5°
November05:3512:4719:5914 h 24 min71.6°
December05:3312:5920:2414 h 51 min75.1°

A year of daylight in Tres Arroyos

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 Tres Arroyos

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: 1619 kWh per kWp.

63°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 32°Best worst-month 63°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearJune kWh/kWp/dayBest ÷ worst month
0°139986%1.574.0×
15°155596%2.202.8×
30°1618100%2.702.2×
32° year-round best1619100%2.762.1×
38° = latitude1613100%2.901.9×
45°158698%3.031.7×
60°146190%3.171.4×
63° off-grid best142688%3.171.4×
70°133182%3.151.3×
90°98361%2.851.9×

A fixed array in Tres Arroyos produces the most over a year at 32°. The design month for an off-grid system is June: at 63° it makes 3.17 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 Tres Arroyos at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 32° (year-round best).

0123456January: 3.49 (70°)3.5JanFebruary: 3.89 (70°)3.9FebMarch: 4.21 (70°)4.2MarApril: 4.15 (70°)4.2AprMay: 3.33 (70°)3.3MayJune: 3.15 (70°)3.1JunJuly: 3.16 (70°)3.2JulAugust: 3.71 (70°)3.7AugSeptember: 3.98 (70°)4.0SepOctober: 3.80 (70°)3.8OctNovember: 3.58 (70°)3.6NovDecember: 3.36 (70°)3.4Dec32°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 32°Mean temp.
January7.544.223.495.7222.3 °C
February6.434.693.895.4521.3 °C
March5.085.014.214.9618.5 °C
April3.604.854.154.1814.3 °C
May2.383.833.333.0710.5 °C
June1.953.583.152.767.2 °C
July2.103.583.162.856.5 °C
August2.974.233.713.628.3 °C
September4.224.593.984.4310.5 °C
October5.454.433.804.9513.5 °C
November6.964.253.585.5717.2 °C
December7.724.043.365.7520.4 °C
Year4.69 avg4.27 avg1331 kWh1619 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 370 Wp of panels at 70°, versus 430 Wp at 32°. The steep array is 12% smaller for the same winter. Size your own system.

Row spacing in Tres Arroyos

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°

Row spacing calculator

How Tres Arroyos compares in Argentina

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

284thof 314 places in Argentina for sunshine: 4.69 peak sun hours a day on flat ground.

−1%solar energy a year compared with the average place in Argentina: 1,619 against 1,639 kWh per kWp.

+22 mindaylight on the longest day, compared with Buenos Aires: 14 h 51 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); Tres Arroyos ranks 284th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 3.15 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 9 h 29 min, −21 min compared with Buenos Aires.

The sunniest places in Argentina

Solar forecast for Tres Arroyos, 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 Tres Arroyos

What is the best solar panel angle in Tres Arroyos?
For a fixed array facing north, the best year-round tilt in Tres Arroyos is 32°, worth about 1619 kWh per kWp a year. An off-grid system that has to get through June does better at about 63°.
What time is sunrise and sunset in Tres Arroyos today?
On 24 October 2026 the sun rises at 06:02 and sets at 19:28 local time (UTC−3), giving 13 h 26 min of daylight. Solar noon is at 12:45.
How many peak sun hours does Tres Arroyos get?
On a flat surface 4.7 hours a day averaged over the year, from 2.0 in June to 7.7 in December. Panels tilted at 70° receive 3.6 sun hours a day in June.
How high does the sun get in Tres Arroyos?
At solar noon the sun stands 28.2° above the horizon on the June solstice and 75.1° on the December solstice.
Is Tres Arroyos a good place for solar panels?
With 4.7 peak sun hours a day on flat ground, Tres Arroyos ranks 284th of 314 places in Argentina for sunshine. A 1 kWp array at the best angle (32°) makes about 1,619 kWh a year here, 1% less than the average place in Argentina.

Places near Tres Arroyos

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.