São Paulo · Brazil · 22.51° S · 48.56° W
Solar position in Igaraçu do Tietê
Sun position, daylight and the best solar panel angle for Igaraçu do Tietê — computed for 22.51° S, 48.56° W, 496 m above sea level.
The sun right now
Sun in Igaraçu do Tietê today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:17 | sun 18° below horizon |
| Nautical dawn | 04:44 | 12° below |
| Civil dawn | 05:11 | 6° below |
| Sunrise | 05:34 | 103° ESE |
| Golden hour ends | 06:05 | sun 6° up |
| Solar noon | 11:58 | 79.4° high |
| Golden hour starts | 17:52 | sun 6° up |
| Sunset | 18:22 | 257° WSW |
| Civil dusk | 18:45 | 6° below |
| Nautical dusk | 19:12 | 12° below |
| Astronomical dusk | 19:40 | 18° below |
| Day length | 12 h 47 min | |
Sun path diagram for Igaraçu do Tietê
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 44.1° at solar noon in Igaraçu do Tietê; 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 | 05:47 | 12:25 | 19:03 | 13 h 17 min | 87.3° |
| February | 06:06 | 12:27 | 18:48 | 12 h 42 min | 77.9° |
| March | 06:18 | 12:21 | 18:24 | 12 h 06 min | 67.1° |
| April | 06:29 | 12:12 | 17:56 | 11 h 27 min | 55.5° |
| May | 06:42 | 12:10 | 17:39 | 10 h 57 min | 47.2° |
| June | 06:53 | 12:16 | 17:38 | 10 h 45 min | 44.1° |
| July | 06:52 | 12:20 | 17:49 | 10 h 57 min | 47.1° |
| August | 06:34 | 12:17 | 18:00 | 11 h 27 min | 55.5° |
| September | 06:04 | 12:07 | 18:10 | 12 h 05 min | 67.0° |
| October | 05:37 | 11:58 | 18:20 | 12 h 44 min | 78.3° |
| November | 05:21 | 12:00 | 18:38 | 13 h 17 min | 87.5° |
| December | 05:26 | 12:12 | 18:57 | 13 h 31 min | 89.1° |
A year of daylight in Igaraçu do Tietê
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 Igaraçu do Tietê
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: 1630 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° | 1511 | 93% | 3.00 | 1.6× |
| 15° | 1614 | 99% | 3.76 | 1.3× |
| 23° = latitude | 1630 | 100% | 4.07 | 1.2× |
| 24° year-round best | 1630 | 100% | 4.10 | 1.2× |
| 25° off-grid best | 1630 | 100% | 4.14 | 1.2× |
| 30° | 1622 | 100% | 4.28 | 1.3× |
| 45° | 1536 | 94% | 4.53 | 1.5× |
| 60° | 1363 | 84% | 4.50 | 1.9× |
| 70° | 1206 | 74% | 4.32 | 2.2× |
| 90° | 843 | 52% | 3.60 | 3.2× |
A fixed array in Igaraçu do Tietê 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 Igaraçu do Tietê 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 | 24.4 °C |
| February | 5.83 | 3.13 | 2.55 | 4.51 | 24.4 °C |
| March | 5.52 | 3.92 | 3.22 | 4.64 | 23.8 °C |
| April | 4.95 | 4.79 | 3.98 | 4.65 | 22.2 °C |
| May | 4.04 | 4.85 | 4.08 | 4.18 | 18.9 °C |
| June | 3.73 | 5.11 | 4.32 | 4.10 | 18.0 °C |
| July | 3.98 | 5.26 | 4.44 | 4.32 | 17.8 °C |
| August | 4.81 | 5.31 | 4.45 | 4.82 | 19.6 °C |
| September | 5.30 | 4.30 | 3.56 | 4.71 | 22.1 °C |
| October | 5.78 | 3.41 | 2.79 | 4.61 | 23.9 °C |
| November | 6.11 | 2.73 | 2.22 | 4.53 | 23.9 °C |
| December | 6.14 | 2.46 | 1.98 | 4.40 | 24.6 °C |
| Year | 5.15 avg | 3.98 avg | 1206 kWh | 1630 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 Igaraçu do Tietê
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 Igaraçu do Tietê compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
1263rdof 2,264 places in Brazil for sunshine, shared: 5.15 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Brazil: 1,630 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); Igaraçu do Tietê ranks joint 1263rd. 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 Igaraçu do Tietê, 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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A free, live card for Igaraçu do Tietê: 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.