São Paulo · Brazil · 22.28° S · 51.50° W
Solar position in Pirapozinho
Sun position, daylight and the best solar panel angle for Pirapozinho — computed for 22.28° S, 51.50° W, 491 m above sea level.
The sun right now
Sun in Pirapozinho today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:29 | sun 18° below horizon |
| Nautical dawn | 04:56 | 12° below |
| Civil dawn | 05:23 | 6° below |
| Sunrise | 05:46 | 103° ESE |
| Golden hour ends | 06:17 | sun 6° up |
| Solar noon | 12:10 | 79.6° high |
| Golden hour starts | 18:03 | sun 6° up |
| Sunset | 18:33 | 257° WSW |
| Civil dusk | 18:56 | 6° below |
| Nautical dusk | 19:24 | 12° below |
| Astronomical dusk | 19:51 | 18° below |
| Day length | 12 h 47 min | |
Sun path diagram for Pirapozinho
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 44.3° at solar noon in Pirapozinho; on the December solstice only 88.8°. 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 | 05:59 | 12:37 | 19:15 | 13 h 16 min | 87.5° |
| February | 06:18 | 12:39 | 19:00 | 12 h 42 min | 78.1° |
| March | 06:30 | 12:32 | 18:35 | 12 h 06 min | 67.3° |
| April | 06:40 | 12:24 | 18:08 | 11 h 27 min | 55.7° |
| May | 06:53 | 12:22 | 17:51 | 10 h 58 min | 47.5° |
| June | 07:04 | 12:27 | 17:50 | 10 h 46 min | 44.3° |
| July | 07:03 | 12:32 | 18:01 | 10 h 58 min | 47.4° |
| August | 06:45 | 12:29 | 18:12 | 11 h 27 min | 55.8° |
| September | 06:16 | 12:19 | 18:21 | 12 h 05 min | 67.2° |
| October | 05:49 | 12:10 | 18:32 | 12 h 43 min | 78.6° |
| November | 05:33 | 12:11 | 18:50 | 13 h 16 min | 87.7° |
| December | 05:39 | 12:24 | 19:09 | 13 h 30 min | 88.8° |
A year of daylight in Pirapozinho
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 Pirapozinho
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
23°collects the most energy over a year: 1633 kWh per kWp.
29°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° | 1522 | 93% | 2.95 | 1.7× |
| 15° | 1620 | 99% | 3.68 | 1.3× |
| 22° = latitude | 1633 | 100% | 3.95 | 1.2× |
| 23° year-round best | 1633 | 100% | 3.98 | 1.2× |
| 29° off-grid best | 1626 | 100% | 4.16 | 1.2× |
| 30° | 1623 | 99% | 4.18 | 1.2× |
| 45° | 1531 | 94% | 4.42 | 1.4× |
| 60° | 1353 | 83% | 4.38 | 1.8× |
| 70° | 1193 | 73% | 4.20 | 2.2× |
| 90° | 828 | 51% | 3.50 | 3.3× |
A fixed array in Pirapozinho produces the most over a year at 23°. The design month for an off-grid system is June: at 29° it makes 4.16 kWh per kWp a day, 4% more than at 23°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Pirapozinho at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 23° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 23° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.00 | 2.55 | 2.04 | 4.37 | 26.0 °C |
| February | 5.99 | 3.17 | 2.57 | 4.62 | 25.9 °C |
| March | 5.71 | 4.03 | 3.29 | 4.77 | 25.4 °C |
| April | 5.02 | 4.86 | 4.00 | 4.67 | 23.9 °C |
| May | 4.00 | 4.80 | 4.01 | 4.09 | 20.4 °C |
| June | 3.69 | 5.00 | 4.20 | 3.98 | 19.3 °C |
| July | 3.97 | 5.19 | 4.36 | 4.23 | 19.2 °C |
| August | 4.78 | 5.24 | 4.37 | 4.73 | 21.0 °C |
| September | 5.22 | 4.20 | 3.46 | 4.59 | 23.7 °C |
| October | 5.70 | 3.36 | 2.73 | 4.52 | 25.7 °C |
| November | 6.31 | 2.74 | 2.21 | 4.65 | 25.9 °C |
| December | 6.31 | 2.43 | 1.94 | 4.50 | 26.4 °C |
| Year | 5.22 avg | 3.97 avg | 1193 kWh | 1633 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 610 Wp of panels at 70°, versus 300 Wp at 23°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Pirapozinho
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 23°
How Pirapozinho compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
1106thof 2,264 places in Brazil for sunshine, shared: 5.22 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Brazil: 1,633 against 1,581 kWh per kWp.
−5 mindaylight on the longest day, compared with São Paulo: 13 h 30 min against 13 h 35 min.
23°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); Pirapozinho ranks joint 1106th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.94 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 10 h 46 min, +5 min compared with São Paulo.
Solar forecast for Pirapozinho, 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 Pirapozinho
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A free, live card for Pirapozinho: 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.