Solarposition.org

Los Ríos Region · Chile · 40.29° S · 73.08° W

Solar position in La Unión

Sun position, daylight and the best solar panel angle for La Unión — computed for 40.29° S, 73.08° W, 32 m above sea level.

Sunrise today06:51106° ESE
Sunset today20:22253° WSW
Best panel angle32°year-round, facing north
Off-grid angle63°best for the darkest month

The sun right now

Azimuth180.0°
Elevation61.6°
At solar noon, 13:36Open on the sun map

Sun in La Unión today

Saturday, 24 October 2026 · local time UTC−3

EventTimeDirection / height
Astronomical dawn05:11sun 18° below horizon
Nautical dawn05:4812° below
Civil dawn06:226° below
Sunrise06:51106° ESE
Golden hour ends07:27sun 6° up
Solar noon13:3661.6° high
Golden hour starts19:45sun 6° up
Sunset20:22253° WSW
Civil dusk20:516° below
Nautical dusk21:2512° below
Astronomical dusk22:0218° below
Day length13 h 31 min

Sun path diagram for La Unión

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 solstice789101112131415161718192021Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 26.3° at solar noon in La Unión; on the December solstice only 73.1°. Sunrise swings from 59° ENE in June to 122° ESE in December — a 63° 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
January06:4714:0321:1914 h 32 min69.5°
February07:2514:0520:4513 h 20 min60.1°
March07:5613:5920:0112 h 06 min49.3°
April07:2712:5018:1310 h 46 min37.7°
May07:5612:4817:409 h 44 min29.4°
June08:1512:5417:339 h 18 min26.3°
July08:0712:5817:509 h 43 min29.4°
August07:3212:5518:1810 h 46 min37.8°
September07:4313:4519:4812 h 05 min49.2°
October06:5513:3720:1913 h 24 min60.6°
November06:2113:3820:5514 h 34 min69.7°
December06:1813:5021:2215 h 03 min73.1°

A year of daylight in La Unión

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 La Unión

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: 1423 kWh per kWp.

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

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°124387%1.055.7×
15°137396%1.454.2×
30°1423100%1.773.3×
32° year-round best1423100%1.813.2×
40° = latitude141099%1.922.8×
45°139098%1.982.6×
60°127790%2.072.2×
63° off-grid best124688%2.072.1×
70°116282%2.062.0×
90°85660%1.861.6×

A fixed array in La Unión produces the most over a year at 32°. The design month for an off-grid system is June: at 63° it makes 2.07 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 La Unión at 70°

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

0123456January: 3.59 (70°)3.6JanFebruary: 3.99 (70°)4.0FebMarch: 4.01 (70°)4.0MarApril: 3.39 (70°)3.4AprMay: 2.48 (70°)2.5MayJune: 2.06 (70°)2.1JunJuly: 2.35 (70°)2.4JulAugust: 2.73 (70°)2.7AugSeptember: 3.48 (70°)3.5SepOctober: 3.49 (70°)3.5OctNovember: 3.38 (70°)3.4NovDecember: 3.33 (70°)3.3Dec32°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 32°Mean temp.
January7.244.243.595.7415.4 °C
February6.194.703.995.4515.7 °C
March4.614.684.014.6413.8 °C
April2.943.923.393.4110.9 °C
May1.782.852.482.288.9 °C
June1.332.352.061.816.9 °C
July1.572.672.352.106.1 °C
August2.253.112.732.676.7 °C
September3.633.983.483.847.9 °C
October4.804.023.494.459.4 °C
November6.043.923.385.0311.3 °C
December7.003.913.335.4613.5 °C
Year4.11 avg3.69 avg1162 kWh1423 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 570 Wp of panels at 70°, versus 650 Wp at 32°. The steep array is 12% smaller for the same winter. Size your own system.

Row spacing in La Unión

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.

5.1 mrow pitch at 70°

4.2 mrow pitch at 32°

Row spacing calculator

How La Unión compares in Chile

Against the other 138 places in Chile with climate data, for a fixed array at its best angle.

123rdof 139 places in Chile for sunshine: 4.11 peak sun hours a day on flat ground.

−15%solar energy a year compared with the average place in Chile: 1,423 against 1,668 kWh per kWp.

+41 mindaylight on the longest day, compared with Santiago: 15 h 03 min against 14 h 23 min.

32°best year-round tilt here; across Chile it runs from 16° in Arica to 43° in Punta Arenas.

Of the 139 places in Chile, Calama gets the most sun (7.19 peak sun hours a day) and Puerto Natales the least (2.73); La Unión ranks 123rd. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.06 kWh a day here, against 2.61 kWh on average in Chile. The shortest day lasts 9 h 18 min, −38 min compared with Santiago.

The sunniest places in Chile

Solar forecast for La Unión, 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 La Unión

What is the best solar panel angle in La Unión?
For a fixed array facing north, the best year-round tilt in La Unión is 32°, worth about 1423 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 La Unión today?
On 24 October 2026 the sun rises at 06:51 and sets at 20:22 local time (UTC−3), giving 13 h 31 min of daylight. Solar noon is at 13:36.
How many peak sun hours does La Unión get?
On a flat surface 4.1 hours a day averaged over the year, from 1.3 in June to 7.2 in January. Panels tilted at 70° receive 2.4 sun hours a day in June.
How high does the sun get in La Unión?
At solar noon the sun stands 26.3° above the horizon on the June solstice and 73.1° on the December solstice.
Is La Unión a good place for solar panels?
With 4.1 peak sun hours a day on flat ground, La Unión ranks 123rd of 139 places in Chile for sunshine. A 1 kWp array at the best angle (32°) makes about 1,423 kWh a year here, 15% less than the average place in Chile.

Places near La Unión

All places in Chile

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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.