São Paulo · Brazil · 22.55° S · 47.91° W
Solar position in São Pedro
Sun position, daylight and the best solar panel angle for São Pedro — computed for 22.55° S, 47.91° W, 566 m above sea level.
The sun right now
Sun in São Pedro today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:14 | sun 18° below horizon |
| Nautical dawn | 04:42 | 12° below |
| Civil dawn | 05:09 | 6° below |
| Sunrise | 05:32 | 103° ESE |
| Golden hour ends | 06:02 | sun 6° up |
| Solar noon | 11:55 | 79.3° high |
| Golden hour starts | 17:49 | sun 6° up |
| Sunset | 18:19 | 257° WSW |
| Civil dusk | 18:42 | 6° below |
| Nautical dusk | 19:10 | 12° below |
| Astronomical dusk | 19:37 | 18° below |
| Day length | 12 h 47 min | |
Sun path diagram for São Pedro
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 44.0° at solar noon in São Pedro; on the December solstice only 89.1°. 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.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 05:44 | 12:22 | 19:01 | 13 h 17 min | 87.3° |
| February | 06:03 | 12:25 | 18:46 | 12 h 42 min | 77.9° |
| March | 06:15 | 12:18 | 18:21 | 12 h 06 min | 67.1° |
| April | 06:26 | 12:10 | 17:53 | 11 h 27 min | 55.5° |
| May | 06:39 | 12:08 | 17:36 | 10 h 57 min | 47.2° |
| June | 06:50 | 12:13 | 17:36 | 10 h 45 min | 44.0° |
| July | 06:49 | 12:18 | 17:46 | 10 h 57 min | 47.1° |
| August | 06:31 | 12:14 | 17:58 | 11 h 27 min | 55.5° |
| September | 06:02 | 12:04 | 18:07 | 12 h 05 min | 66.9° |
| October | 05:34 | 11:56 | 18:18 | 12 h 44 min | 78.3° |
| November | 05:18 | 11:57 | 18:36 | 13 h 17 min | 87.5° |
| December | 05:24 | 12:09 | 18:55 | 13 h 31 min | 89.1° |
A year of daylight in São Pedro
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in São Pedro
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
24°collects the most energy over a year: 1627 kWh per kWp.
25°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | June kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1507 | 93% | 3.01 | 1.6× |
| 15° | 1610 | 99% | 3.77 | 1.2× |
| 23° = latitude | 1627 | 100% | 4.08 | 1.2× |
| 24° year-round best | 1627 | 100% | 4.11 | 1.2× |
| 25° off-grid best | 1627 | 100% | 4.14 | 1.2× |
| 30° | 1619 | 100% | 4.29 | 1.3× |
| 45° | 1534 | 94% | 4.54 | 1.5× |
| 60° | 1362 | 84% | 4.51 | 1.9× |
| 70° | 1206 | 74% | 4.33 | 2.3× |
| 90° | 844 | 52% | 3.61 | 3.2× |
A fixed array in São Pedro produces the most over a year at 24°. The design month for an off-grid system is June: at 25° it makes 4.14 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in São Pedro at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 24° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 24° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.66 | 2.50 | 2.02 | 4.14 | 24.0 °C |
| February | 5.83 | 3.12 | 2.54 | 4.52 | 24.0 °C |
| March | 5.48 | 3.89 | 3.21 | 4.61 | 23.4 °C |
| April | 4.92 | 4.77 | 3.97 | 4.64 | 21.8 °C |
| May | 4.02 | 4.84 | 4.08 | 4.17 | 18.8 °C |
| June | 3.73 | 5.12 | 4.33 | 4.11 | 18.0 °C |
| July | 3.99 | 5.29 | 4.47 | 4.34 | 17.8 °C |
| August | 4.81 | 5.32 | 4.46 | 4.83 | 19.6 °C |
| September | 5.29 | 4.28 | 3.55 | 4.69 | 22.1 °C |
| October | 5.76 | 3.40 | 2.79 | 4.59 | 23.8 °C |
| November | 6.04 | 2.73 | 2.22 | 4.48 | 23.7 °C |
| December | 6.10 | 2.45 | 1.98 | 4.37 | 24.2 °C |
| Year | 5.13 avg | 3.98 avg | 1206 kWh | 1627 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 290 Wp at 24°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in São Pedro
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°
2.8 mrow pitch at 24°
How São Pedro compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
1293rdof 2,264 places in Brazil for sunshine, shared: 5.13 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Brazil: 1,627 against 1,581 kWh per kWp.
−4 mindaylight on the longest day, compared with São Paulo: 13 h 31 min against 13 h 35 min.
24°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); São Pedro ranks joint 1293rd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.98 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 10 h 45 min, +4 min compared with São Paulo.
Solar forecast for São Pedro, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in São Pedro
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Places near São Pedro
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A free, live card for São Pedro: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
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.