Rio Grande do Sul · Brazil · 27.95° S · 51.81° W
Solar position in Sananduva
Sun position, daylight and the best solar panel angle for Sananduva — computed for 27.95° S, 51.81° W, 655 m above sea level.
The sun right now
Sun in Sananduva today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:19 | sun 18° below horizon |
| Nautical dawn | 04:49 | 12° below |
| Civil dawn | 05:17 | 6° below |
| Sunrise | 05:42 | 104° ESE |
| Golden hour ends | 06:13 | sun 6° up |
| Solar noon | 12:11 | 74.0° high |
| Golden hour starts | 18:09 | sun 6° up |
| Sunset | 18:41 | 256° WSW |
| Civil dusk | 19:05 | 6° below |
| Nautical dusk | 19:34 | 12° below |
| Astronomical dusk | 20:03 | 18° below |
| Day length | 12 h 59 min | |
Sun path diagram for Sananduva
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 38.6° at solar noon in Sananduva; on the December solstice only 85.5°. Sunrise swings from 64° ENE in June to 117° ESE in December — a 54° 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 | 05:50 | 12:38 | 19:26 | 13 h 36 min | 81.9° |
| February | 06:14 | 12:40 | 19:06 | 12 h 52 min | 72.5° |
| March | 06:31 | 12:34 | 18:36 | 12 h 06 min | 61.6° |
| April | 06:47 | 12:25 | 18:03 | 11 h 16 min | 50.1° |
| May | 07:04 | 12:23 | 17:42 | 10 h 38 min | 41.8° |
| June | 07:18 | 12:29 | 17:40 | 10 h 22 min | 38.6° |
| July | 07:15 | 12:33 | 17:52 | 10 h 37 min | 41.7° |
| August | 06:52 | 12:30 | 18:08 | 11 h 16 min | 50.1° |
| September | 06:17 | 12:20 | 18:23 | 12 h 05 min | 61.5° |
| October | 05:44 | 12:11 | 18:39 | 12 h 54 min | 72.9° |
| November | 05:24 | 12:13 | 19:01 | 13 h 37 min | 82.1° |
| December | 05:27 | 12:25 | 19:22 | 13 h 55 min | 85.5° |
A year of daylight in Sananduva
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 Sananduva
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
25°collects the most energy over a year: 1519 kWh per kWp.
52°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° | 1396 | 92% | 2.16 | 2.4× |
| 15° | 1499 | 99% | 2.75 | 1.8× |
| 25° year-round best | 1519 | 100% | 3.05 | 1.6× |
| 28° = latitude | 1518 | 100% | 3.12 | 1.5× |
| 30° | 1515 | 100% | 3.16 | 1.5× |
| 45° | 1443 | 95% | 3.39 | 1.3× |
| 52° off-grid best | 1381 | 91% | 3.42 | 1.2× |
| 60° | 1290 | 85% | 3.40 | 1.4× |
| 70° | 1148 | 76% | 3.29 | 1.7× |
| 90° | 806 | 53% | 2.81 | 2.7× |
A fixed array in Sananduva produces the most over a year at 25°. The design month for an off-grid system is June: at 52° it makes 3.42 kWh per kWp a day, 12% more than at 25°, and costs 9% of the yearly total. Why steep panels win winter.
Off-grid solar in Sananduva at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 25° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 25° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.35 | 2.97 | 2.44 | 4.75 | 22.1 °C |
| February | 5.94 | 3.54 | 2.93 | 4.76 | 21.9 °C |
| March | 5.19 | 4.10 | 3.41 | 4.56 | 20.7 °C |
| April | 4.19 | 4.46 | 3.76 | 4.15 | 18.1 °C |
| May | 3.09 | 4.00 | 3.42 | 3.36 | 14.3 °C |
| June | 2.67 | 3.82 | 3.29 | 3.05 | 12.8 °C |
| July | 3.02 | 4.29 | 3.71 | 3.46 | 12.2 °C |
| August | 3.77 | 4.46 | 3.83 | 3.97 | 13.9 °C |
| September | 4.32 | 3.84 | 3.26 | 4.03 | 15.8 °C |
| October | 5.11 | 3.39 | 2.84 | 4.27 | 18.4 °C |
| November | 6.31 | 3.09 | 2.57 | 4.85 | 19.7 °C |
| December | 6.50 | 2.78 | 2.28 | 4.77 | 21.3 °C |
| Year | 4.70 avg | 3.73 avg | 1148 kWh | 1519 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 520 Wp of panels at 70°, versus 390 Wp at 25°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Sananduva
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.
3.3 mrow pitch at 70°
3.0 mrow pitch at 25°
How Sananduva compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
1942ndof 2,264 places in Brazil for sunshine, shared: 4.70 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Brazil: 1,519 against 1,581 kWh per kWp.
+20 mindaylight on the longest day, compared with São Paulo: 13 h 55 min against 13 h 35 min.
25°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); Sananduva ranks joint 1942nd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.28 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 10 h 22 min, −19 min compared with São Paulo.
Solar forecast for Sananduva, 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 Sananduva
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A free, live card for Sananduva: 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.