Maranhão · Brazil · 1.73° S · 45.14° W
Solar position in Bacuri
Sun position, daylight and the best solar panel angle for Bacuri — computed for 1.73° S, 45.14° W, 2 m above sea level.
The sun right now
Sun in Bacuri today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:29 | sun 18° below horizon |
| Nautical dawn | 04:54 | 12° below |
| Civil dawn | 05:18 | 6° below |
| Sunrise | 05:39 | 102° ESE |
| Golden hour ends | 06:07 | sun 6° up |
| Solar noon | 11:44 | 79.8° high |
| Golden hour starts | 17:21 | sun 6° up |
| Sunset | 17:49 | 258° WSW |
| Civil dusk | 18:10 | 6° below |
| Nautical dusk | 18:35 | 12° below |
| Astronomical dusk | 18:59 | 18° below |
| Day length | 12 h 10 min | |
Sun path diagram for Bacuri
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 64.8° at solar noon in Bacuri; on the December solstice only 68.3°. Sunrise swings from 67° ENE in June to 113° 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 | 06:05 | 12:11 | 18:17 | 12 h 12 min | 71.9° |
| February | 06:09 | 12:14 | 18:18 | 12 h 09 min | 81.3° |
| March | 06:04 | 12:07 | 18:10 | 12 h 06 min | 87.9° |
| April | 05:57 | 11:59 | 18:01 | 12 h 04 min | 76.3° |
| May | 05:56 | 11:57 | 17:58 | 12 h 02 min | 68.0° |
| June | 06:01 | 12:02 | 18:03 | 12 h 01 min | 64.8° |
| July | 06:06 | 12:07 | 18:08 | 12 h 02 min | 67.9° |
| August | 06:01 | 12:03 | 18:05 | 12 h 04 min | 76.3° |
| September | 05:50 | 11:53 | 17:56 | 12 h 06 min | 87.7° |
| October | 05:40 | 11:45 | 17:49 | 12 h 09 min | 80.9° |
| November | 05:40 | 11:46 | 17:52 | 12 h 12 min | 71.7° |
| December | 05:51 | 11:58 | 18:05 | 12 h 13 min | 68.3° |
A year of daylight in Bacuri
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 Bacuri
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
3°collects the most energy over a year: 1517 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 | March kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° off-grid best | 1515 | 100% | 3.61 | 1.3× |
| 2° = latitude | 1517 | 100% | 3.60 | 1.3× |
| 3° year-round best | 1517 | 100% | 3.60 | 1.3× |
| 15° | 1491 | 98% | 3.51 | 1.4× |
| 30° | 1384 | 91% | 3.23 | 1.7× |
| 45° | 1203 | 79% | 2.79 | 2.2× |
| 60° | 965 | 64% | 2.21 | 3.2× |
| 70° | 805 | 53% | 1.77 | 3.5× |
| 90° | 541 | 36% | 0.99 | 2.6× |
A fixed array in Bacuri produces the most over a year at 3°. The design month for an off-grid system is March: at 0° it makes 3.61 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Bacuri at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 3° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 3° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.96 | 1.43 | 1.12 | 3.86 | 27.2 °C |
| February | 4.69 | 1.67 | 1.31 | 3.68 | 26.7 °C |
| March | 4.55 | 2.21 | 1.77 | 3.60 | 26.6 °C |
| April | 4.55 | 2.92 | 2.35 | 3.64 | 26.6 °C |
| May | 4.83 | 3.76 | 3.05 | 3.89 | 26.9 °C |
| June | 5.06 | 4.41 | 3.59 | 4.10 | 26.7 °C |
| July | 5.35 | 4.51 | 3.68 | 4.33 | 26.6 °C |
| August | 5.88 | 4.13 | 3.36 | 4.73 | 27.0 °C |
| September | 6.06 | 3.08 | 2.48 | 4.81 | 27.6 °C |
| October | 5.96 | 1.98 | 1.56 | 4.67 | 28.1 °C |
| November | 5.72 | 1.37 | 1.06 | 4.43 | 28.3 °C |
| December | 5.32 | 1.39 | 1.08 | 4.10 | 28.1 °C |
| Year | 5.25 avg | 2.74 avg | 805 kWh | 1517 kWh |
Sizing example. To run a 1 kWh-per-day load through November on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 1,120 Wp of panels at 70°, versus 330 Wp at 3°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Bacuri
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.
1.7 mrow pitch at 70°
2.1 mrow pitch at 3°
How Bacuri compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
1045thof 2,264 places in Brazil for sunshine, shared: 5.25 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Brazil: 1,517 against 1,581 kWh per kWp.
−1 h 22 mindaylight on the longest day, compared with São Paulo: 12 h 13 min against 13 h 35 min.
3°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); Bacuri ranks joint 1045th. In its darkest month, November, 1 kWp of off-grid panels at 70° makes 1.06 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 12 h 01 min, +1 h 20 min compared with São Paulo.
Solar forecast for Bacuri, 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 Bacuri
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Places near Bacuri
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A free, live card for Bacuri: 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.