Piauí · Brazil · 6.77° S · 43.02° W
Solar position in Floriano
Sun position, daylight and the best solar panel angle for Floriano — computed for 6.77° S, 43.02° W, 114 m above sea level.
The sun right now
Sun in Floriano today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:16 | sun 18° below horizon |
| Nautical dawn | 04:41 | 12° below |
| Civil dawn | 05:05 | 6° below |
| Sunrise | 05:27 | 102° ESE |
| Golden hour ends | 05:55 | sun 6° up |
| Solar noon | 11:36 | 84.9° high |
| Golden hour starts | 17:17 | sun 6° up |
| Sunset | 17:45 | 258° WSW |
| Civil dusk | 18:06 | 6° below |
| Nautical dusk | 18:31 | 12° below |
| Astronomical dusk | 18:56 | 18° below |
| Day length | 12 h 18 min | |
Sun path diagram for Floriano
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 59.8° at solar noon in Floriano; on the December solstice only 73.3°. Sunrise swings from 66° ENE in June to 114° 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.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 05:49 | 12:03 | 18:16 | 12 h 27 min | 77.0° |
| February | 05:57 | 12:05 | 18:13 | 12 h 17 min | 86.4° |
| March | 05:56 | 11:59 | 18:02 | 12 h 06 min | 82.8° |
| April | 05:53 | 11:50 | 17:48 | 11 h 55 min | 71.2° |
| May | 05:55 | 11:48 | 17:42 | 11 h 47 min | 63.0° |
| June | 06:02 | 11:53 | 17:45 | 11 h 44 min | 59.8° |
| July | 06:05 | 11:58 | 17:52 | 11 h 47 min | 62.9° |
| August | 05:57 | 11:55 | 17:52 | 11 h 55 min | 71.3° |
| September | 05:42 | 11:45 | 17:48 | 12 h 06 min | 82.7° |
| October | 05:28 | 11:36 | 17:45 | 12 h 17 min | 85.9° |
| November | 05:24 | 11:37 | 17:51 | 12 h 27 min | 76.8° |
| December | 05:34 | 11:50 | 18:05 | 12 h 31 min | 73.3° |
A year of daylight in Floriano
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 Floriano
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
10°collects the most energy over a year: 1678 kWh per kWp.
0°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 | January kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° off-grid best | 1654 | 99% | 4.16 | 1.3× |
| 7° = latitude | 1675 | 100% | 4.01 | 1.4× |
| 10° year-round best | 1678 | 100% | 3.93 | 1.4× |
| 15° | 1673 | 100% | 3.78 | 1.5× |
| 30° | 1595 | 95% | 3.20 | 1.8× |
| 45° | 1426 | 85% | 2.46 | 2.3× |
| 60° | 1181 | 70% | 1.65 | 3.4× |
| 70° | 992 | 59% | 1.19 | 4.3× |
| 90° | 661 | 39% | 1.03 | 3.8× |
A fixed array in Floriano produces the most over a year at 10°. The design month for an off-grid system is January: at 0° it makes 4.16 kWh per kWp a day, 6% more than at 10°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Floriano at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 10° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 10° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.25 | 1.52 | 1.19 | 3.93 | 27.1 °C |
| February | 5.29 | 2.03 | 1.61 | 4.08 | 26.2 °C |
| March | 5.27 | 2.77 | 2.23 | 4.18 | 26.2 °C |
| April | 5.32 | 3.72 | 3.02 | 4.37 | 26.6 °C |
| May | 5.35 | 4.72 | 3.83 | 4.53 | 27.6 °C |
| June | 5.52 | 5.61 | 4.55 | 4.79 | 27.9 °C |
| July | 5.88 | 5.78 | 4.69 | 5.07 | 28.1 °C |
| August | 6.56 | 5.26 | 4.25 | 5.47 | 28.9 °C |
| September | 6.87 | 3.83 | 3.06 | 5.45 | 30.6 °C |
| October | 6.42 | 2.33 | 1.83 | 4.88 | 31.4 °C |
| November | 5.85 | 1.53 | 1.18 | 4.33 | 30.2 °C |
| December | 5.49 | 1.41 | 1.09 | 4.04 | 28.7 °C |
| Year | 5.76 avg | 3.38 avg | 992 kWh | 1678 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 1,090 Wp of panels at 70°, versus 300 Wp at 10°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Floriano
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.
1.9 mrow pitch at 70°
2.2 mrow pitch at 10°
How Floriano compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
288thof 2,264 places in Brazil for sunshine, shared: 5.76 peak sun hours a day on flat ground.
+6%solar energy a year compared with the average place in Brazil: 1,678 against 1,581 kWh per kWp.
−1 h 04 mindaylight on the longest day, compared with São Paulo: 12 h 31 min against 13 h 35 min.
10°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); Floriano ranks joint 288th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.09 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 11 h 44 min, +1 h 03 min compared with São Paulo.
Solar forecast for Floriano, 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 Floriano
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Places near Floriano
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A free, live card for Floriano: 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.