Solarposition.org

Minas Gerais · Brazil · 21.46° S · 43.55° W

Solar position in Santos Dumont

Sun position, daylight and the best solar panel angle for Santos Dumont — computed for 21.46° S, 43.55° W, 844 m above sea level.

Sunrise today05:15103° ESE
Sunset today18:01257° WSW
Best panel angle22°year-round, facing north
Off-grid angle24°best for the darkest month

The sun right now

Azimuth180.0°
Elevation80.4°
At solar noon, 11:38Open on the sun map

Sun in Santos Dumont today

Saturday, 24 October 2026 · local time UTC−3

EventTimeDirection / height
Astronomical dawn03:58sun 18° below horizon
Nautical dawn04:2612° below
Civil dawn04:536° below
Sunrise05:15103° ESE
Golden hour ends05:45sun 6° up
Solar noon11:3880.4° high
Golden hour starts17:31sun 6° up
Sunset18:01257° WSW
Civil dusk18:246° below
Nautical dusk18:5112° below
Astronomical dusk19:1818° below
Day length12 h 45 min

Sun path diagram for Santos Dumont

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 solstice7891011121314151617EquinoxDecember solstice6789101112131415161718Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 45.1° at solar noon in Santos Dumont; on the December solstice only 88.0°. 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January05:2812:0518:4113 h 13 min88.3°
February05:4712:0718:2712 h 40 min79.0°
March05:5812:0118:0412 h 06 min68.1°
April06:0811:5217:3711 h 29 min56.6°
May06:2011:5017:2111 h 01 min48.3°
June06:3111:5617:2010 h 50 min45.1°
July06:3012:0017:3111 h 01 min48.2°
August06:1211:5717:4111 h 29 min56.6°
September05:4411:4717:5012 h 05 min68.0°
October05:1811:3817:5912 h 42 min79.4°
November05:0311:4018:1713 h 14 min88.5°
December05:0911:5218:3513 h 27 min88.0°

A year of daylight in Santos Dumont

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 Santos Dumont

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: 1474 kWh per kWp.

24°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 22°Best worst-month 24°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearMay kWh/kWp/dayBest ÷ worst month
0°138694%3.001.6×
15°146599%3.501.3×
21° = latitude1474100%3.651.2×
22° year-round best1474100%3.671.2×
24° off-grid best1473100%3.711.2×
30°146299%3.801.2×
45°137893%3.871.4×
60°121983%3.721.8×
70°107873%3.502.2×
90°75951%2.782.8×

A fixed array in Santos Dumont produces the most over a year at 22°. The design month for an off-grid system is May: at 24° it makes 3.71 kWh per kWp a day, 1% more than at 22°, and costs 0% of the yearly total. Why steep panels win winter.

Off-grid solar in Santos Dumont at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 22° (year-round best).

012345January: 2.03 (70°)2.0JanFebruary: 2.51 (70°)2.5FebMarch: 2.93 (70°)2.9MarApril: 3.40 (70°)3.4AprMay: 3.50 (70°)3.5MayJune: 3.79 (70°)3.8JunJuly: 4.02 (70°)4.0JulAugust: 3.86 (70°)3.9AugSeptember: 3.10 (70°)3.1SepOctober: 2.45 (70°)2.5OctNovember: 1.99 (70°)2.0NovDecember: 1.85 (70°)1.9Dec22°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 22°Mean temp.
January5.662.502.034.2122.5 °C
February5.773.062.514.5122.4 °C
March5.073.542.934.2421.9 °C
April4.454.083.404.0820.5 °C
May3.714.153.503.6718.2 °C
June3.534.493.793.6917.6 °C
July3.794.744.023.9517.4 °C
August4.394.583.864.2718.8 °C
September4.743.723.104.1620.8 °C
October5.012.982.454.0222.1 °C
November4.922.441.993.7421.6 °C
December5.392.281.853.9622.3 °C
Year4.70 avg3.55 avg1078 kWh1474 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 640 Wp of panels at 70°, versus 320 Wp at 22°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Santos Dumont

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.

2.8 mrow pitch at 70°

2.7 mrow pitch at 22°

Row spacing calculator

How Santos Dumont compares in Brazil

Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.

1942ndof 2,264 places in Brazil for sunshine, shared: 4.70 peak sun hours a day on flat ground.

−7%solar energy a year compared with the average place in Brazil: 1,474 against 1,581 kWh per kWp.

−9 mindaylight on the longest day, compared with São Paulo: 13 h 27 min against 13 h 35 min.

22°best year-round tilt here; across Brazil it runs from 0° in Macapá to 28° in Santa Vitória do Palmar.

Of the 2,264 places in Brazil, Catolé do Rocha gets the most sun (6.16 peak sun hours a day) and Paranaguá the least (4.01); Santos Dumont ranks joint 1942nd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.85 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 10 h 50 min, +8 min compared with São Paulo.

The sunniest places in Brazil

Solar forecast for Santos Dumont, 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 Santos Dumont

What is the best solar panel angle in Santos Dumont?
For a fixed array facing north, the best year-round tilt in Santos Dumont is 22°, worth about 1474 kWh per kWp a year. An off-grid system that has to get through May does better at about 24°.
What time is sunrise and sunset in Santos Dumont today?
On 24 October 2026 the sun rises at 05:15 and sets at 18:01 local time (UTC−3), giving 12 h 45 min of daylight. Solar noon is at 11:38.
How many peak sun hours does Santos Dumont get?
On a flat surface 4.7 hours a day averaged over the year, from 3.5 in June to 5.8 in February. Panels tilted at 70° receive 2.3 sun hours a day in December.
How high does the sun get in Santos Dumont?
At solar noon the sun stands 45.1° above the horizon on the June solstice and 88.0° on the December solstice.
Is Santos Dumont a good place for solar panels?
With 4.7 peak sun hours a day on flat ground, Santos Dumont ranks joint 1942nd of 2,264 places in Brazil for sunshine. A 1 kWp array at the best angle (22°) makes about 1,474 kWh a year here, 7% less than the average place in Brazil.

Places near Santos Dumont

All places in Brazil

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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.