Solarposition.org

Roraima · Brazil · 2.90° N · 61.50° W

Solar position in Alto Alegre

Sun position, daylight and the best solar panel angle for Alto Alegre — computed for 2.90° N, 61.50° W, 83 m above sea level.

Sunrise today05:49102° ESE
Sunset today17:51258° WSW
Best panel angle4°year-round, facing south
Off-grid angle0°best for the darkest month

The sun right now

Azimuth180.0°
Elevation75.2°
At solar noon, 11:50Open on the sun map

Sun in Alto Alegre today

Saturday, 24 October 2026 · local time UTC−4

EventTimeDirection / height
Astronomical dawn04:39sun 18° below horizon
Nautical dawn05:0312° below
Civil dawn05:286° below
Sunrise05:49102° ESE
Golden hour ends06:17sun 6° up
Solar noon11:5075.2° high
Golden hour starts17:23sun 6° up
Sunset17:51258° WSW
Civil dusk18:126° below
Nautical dusk18:3612° below
Astronomical dusk19:0118° below
Day length12 h 02 min

Sun path diagram for Alto Alegre

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 solstice789101112131415161718EquinoxDecember solstice7891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 69.5° at solar noon in Alto Alegre; on the December solstice only 63.7°. Sunrise swings from 66° ENE in June to 113° ESE in December — a 47° 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
January06:1712:1718:1611 h 59 min67.3°
February06:1812:1918:2012 h 02 min76.7°
March06:0912:1318:1612 h 07 min87.5°
April05:5812:0418:1012 h 12 min80.9°
May05:5412:0218:1012 h 16 min72.6°
June05:5912:0718:1612 h 17 min69.5°
July06:0412:1218:2012 h 16 min72.5°
August06:0312:0918:1412 h 12 min80.9°
September05:5511:5918:0212 h 07 min87.6°
October05:4911:5017:5112 h 02 min76.2°
November05:5211:5117:5111 h 59 min67.1°
December06:0512:0418:0211 h 57 min63.7°

A year of daylight in Alto Alegre

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 Alto Alegre

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

4°collects the most energy over a year: 1496 kWh per kWp.

0°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 4°Best worst-month 0°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearMay kWh/kWp/dayBest ÷ worst month
0° off-grid best1494100%3.581.3×
3° = latitude1496100%3.531.3×
4° year-round best1496100%3.511.3×
15°147498%3.271.4×
30°137492%2.781.7×
45°120180%2.172.2×
60°97165%1.493.1×
70°81154%1.123.5×
90°54536%0.992.7×

A fixed array in Alto Alegre produces the most over a year at 4°. The design month for an off-grid system is May: at 0° it makes 3.58 kWh per kWp a day, 2% more than at 4°, and costs 0% of the yearly total. Why steep panels win winter.

Off-grid solar in Alto Alegre at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 4° (year-round best).

012345January: 3.57 (70°)3.6JanFebruary: 2.94 (70°)2.9FebMarch: 2.30 (70°)2.3MarApril: 1.54 (70°)1.5AprMay: 1.12 (70°)1.1MayJune: 1.06 (70°)1.1JunJuly: 1.03 (70°)1.0JulAugust: 1.25 (70°)1.2AugSeptember: 2.06 (70°)2.1SepOctober: 2.90 (70°)2.9OctNovember: 3.40 (70°)3.4NovDecember: 3.52 (70°)3.5Dec4°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 4°Mean temp.
January5.284.413.574.2728.1 °C
February5.303.652.944.2328.8 °C
March5.382.892.304.2429.2 °C
April5.001.951.543.9127.6 °C
May4.511.431.123.5125.8 °C
June4.601.351.063.5825.1 °C
July4.801.321.033.7425.0 °C
August5.291.581.254.1625.5 °C
September5.862.562.064.6526.3 °C
October5.703.582.904.5726.9 °C
November5.304.193.404.2927.2 °C
December4.994.343.524.0527.4 °C
Year5.17 avg2.77 avg811 kWh1496 kWh

Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 1,140 Wp of panels at 70°, versus 340 Wp at 4°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Alto Alegre

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.

1.7 mrow pitch at 70°

2.1 mrow pitch at 4°

Row spacing calculator

How Alto Alegre compares in Brazil

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

1213thof 2,264 places in Brazil for sunshine, shared: 5.17 peak sun hours a day on flat ground.

−5%solar energy a year compared with the average place in Brazil: 1,496 against 1,581 kWh per kWp.

−1 h 18 mindaylight on the longest day, compared with São Paulo: 12 h 17 min against 13 h 35 min.

4°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); Alto Alegre ranks joint 1213th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 1.03 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 11 h 57 min, +1 h 16 min compared with São Paulo.

The sunniest places in Brazil

Solar forecast for Alto Alegre, 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 Alto Alegre

What is the best solar panel angle in Alto Alegre?
For a fixed array facing south, the best year-round tilt in Alto Alegre is 4°, worth about 1496 kWh per kWp a year. An off-grid system that has to get through May does better at about 0°.
What time is sunrise and sunset in Alto Alegre today?
On 24 October 2026 the sun rises at 05:49 and sets at 17:51 local time (UTC−4), giving 12 h 02 min of daylight. Solar noon is at 11:50.
How many peak sun hours does Alto Alegre get?
On a flat surface 5.2 hours a day averaged over the year, from 4.5 in May to 5.9 in September. Panels tilted at 70° receive 1.3 sun hours a day in July.
How high does the sun get in Alto Alegre?
At solar noon the sun stands 69.5° above the horizon on the June solstice and 63.7° on the December solstice.
Is Alto Alegre a good place for solar panels?
With 5.2 peak sun hours a day on flat ground, Alto Alegre ranks joint 1213th of 2,264 places in Brazil for sunshine. A 1 kWp array at the best angle (4°) makes about 1,496 kWh a year here, 5% less than the average place in Brazil.

Places near Alto Alegre

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.