Solarposition.org

Rio de Janeiro · Brazil · 22.97° S · 42.03° W

Solar position in Arraial do Cabo

Sun position, daylight and the best solar panel angle for Arraial do Cabo — computed for 22.97° S, 42.03° W, 11 m above sea level.

Sunrise today05:08103° ESE
Sunset today17:56257° WSW
Best panel angle22°year-round, facing north
Off-grid angle32°best for the darkest month

The sun right now

Azimuth180.0°
Elevation78.9°
At solar noon, 11:32Open on the sun map

Sun in Arraial do Cabo today

Saturday, 24 October 2026 · local time UTC−3

EventTimeDirection / height
Astronomical dawn03:50sun 18° below horizon
Nautical dawn04:1712° below
Civil dawn04:456° below
Sunrise05:08103° ESE
Golden hour ends05:38sun 6° up
Solar noon11:3278.9° high
Golden hour starts17:26sun 6° up
Sunset17:56257° WSW
Civil dusk18:196° below
Nautical dusk18:4712° below
Astronomical dusk19:1418° below
Day length12 h 48 min

Sun path diagram for Arraial do Cabo

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 43.6° at solar noon in Arraial do Cabo; on the December solstice only 89.5°. 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
January05:2011:5918:3813 h 18 min86.8°
February05:3912:0118:2212 h 43 min77.4°
March05:5211:5517:5712 h 06 min66.6°
April06:0311:4617:2911 h 26 min55.0°
May06:1611:4417:1210 h 56 min46.8°
June06:2811:4917:1110 h 43 min43.6°
July06:2611:5417:2210 h 55 min46.7°
August06:0811:5117:3411 h 26 min55.1°
September05:3811:4117:4312 h 05 min66.5°
October05:1011:3217:5512 h 45 min77.9°
November04:5411:3418:1313 h 19 min87.0°
December04:5911:4618:3213 h 33 min89.5°

A year of daylight in Arraial do Cabo

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 Arraial do Cabo

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: 1567 kWh per kWp.

32°gives the most in the darkest month — the one an off-grid system is sized for.

20%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 32°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearJune kWh/kWp/dayBest ÷ worst month
0°146694%2.791.8×
15°155699%3.471.5×
22° year-round best1567100%3.711.3×
23° = latitude1567100%3.741.3×
30°155599%3.931.2×
32° off-grid best154899%3.971.2×
45°146594%4.141.3×
60°129383%4.101.6×
70°113973%3.942.0×
90°78850%3.282.9×

A fixed array in Arraial do Cabo produces the most over a year at 22°. The design month for an off-grid system is June: at 32° it makes 3.97 kWh per kWp a day, 7% more than at 22°, and costs 1% of the yearly total. Why steep panels win winter.

Off-grid solar in Arraial do Cabo at 70°

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

0123456January: 2.13 (70°)2.1JanFebruary: 2.73 (70°)2.7FebMarch: 3.23 (70°)3.2MarApril: 3.79 (70°)3.8AprMay: 3.71 (70°)3.7MayJune: 3.94 (70°)3.9JunJuly: 3.99 (70°)4.0JulAugust: 3.94 (70°)3.9AugSeptember: 3.21 (70°)3.2SepOctober: 2.67 (70°)2.7OctNovember: 2.14 (70°)2.1NovDecember: 1.95 (70°)2.0Dec22°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 22°Mean temp.
January6.372.642.134.6925.0 °C
February6.403.352.734.9825.3 °C
March5.523.963.234.6425.2 °C
April4.754.613.794.4024.3 °C
May3.784.473.713.7722.4 °C
June3.524.733.943.7121.5 °C
July3.684.783.993.8520.9 °C
August4.374.723.944.2621.1 °C
September4.783.873.214.2221.6 °C
October5.373.252.674.3422.6 °C
November5.612.642.144.2523.2 °C
December6.132.431.954.4624.4 °C
Year5.02 avg3.79 avg1139 kWh1567 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 600 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 Arraial do Cabo

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.

2.9 mrow pitch at 70°

2.7 mrow pitch at 22°

Row spacing calculator

How Arraial do Cabo compares in Brazil

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

1486thof 2,264 places in Brazil for sunshine, shared: 5.02 peak sun hours a day on flat ground.

−1%solar energy a year compared with the average place in Brazil: 1,567 against 1,581 kWh per kWp.

−2 mindaylight on the longest day, compared with São Paulo: 13 h 33 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); Arraial do Cabo ranks joint 1486th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.95 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 10 h 43 min, +2 min compared with São Paulo.

The sunniest places in Brazil

Solar forecast for Arraial do Cabo, 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 Arraial do Cabo

What is the best solar panel angle in Arraial do Cabo?
For a fixed array facing north, the best year-round tilt in Arraial do Cabo is 22°, worth about 1567 kWh per kWp a year. An off-grid system that has to get through June does better at about 32°.
What time is sunrise and sunset in Arraial do Cabo today?
On 24 October 2026 the sun rises at 05:08 and sets at 17:56 local time (UTC−3), giving 12 h 48 min of daylight. Solar noon is at 11:32.
How many peak sun hours does Arraial do Cabo get?
On a flat surface 5.0 hours a day averaged over the year, from 3.5 in June to 6.4 in February. Panels tilted at 70° receive 2.4 sun hours a day in December.
How high does the sun get in Arraial do Cabo?
At solar noon the sun stands 43.6° above the horizon on the June solstice and 89.5° on the December solstice.
Is Arraial do Cabo a good place for solar panels?
With 5.0 peak sun hours a day on flat ground, Arraial do Cabo ranks joint 1486th of 2,264 places in Brazil for sunshine. A 1 kWp array at the best angle (22°) makes about 1,567 kWh a year here, 1% less than the average place in Brazil.

Places near Arraial do Cabo

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.