Mato Grosso · Brazil · 11.42° S · 58.75° W
Solar position in Juína
Sun position, daylight and the best solar panel angle for Juína — computed for 11.42° S, 58.75° W, 353 m above sea level.
The sun right now
Sun in Juína today
Saturday, 24 October 2026 · local time UTC−4
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:13 | sun 18° below horizon |
| Nautical dawn | 04:39 | 12° below |
| Civil dawn | 05:04 | 6° below |
| Sunrise | 05:26 | 102° ESE |
| Golden hour ends | 05:54 | sun 6° up |
| Solar noon | 11:39 | 89.5° high |
| Golden hour starts | 17:23 | sun 6° up |
| Sunset | 17:52 | 258° WSW |
| Civil dusk | 18:14 | 6° below |
| Nautical dusk | 18:39 | 12° below |
| Astronomical dusk | 19:04 | 18° below |
| Day length | 12 h 26 min | |
Sun path diagram for Juína
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 55.2° at solar noon in Juína; on the December solstice only 78.0°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 48° 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 | 05:45 | 12:06 | 18:26 | 12 h 41 min | 81.6° |
| February | 05:56 | 12:08 | 18:20 | 12 h 24 min | 89.0° |
| March | 05:59 | 12:02 | 18:05 | 12 h 06 min | 78.2° |
| April | 06:00 | 11:53 | 17:47 | 11 h 47 min | 66.6° |
| May | 06:05 | 11:51 | 17:38 | 11 h 33 min | 58.3° |
| June | 06:13 | 11:56 | 17:40 | 11 h 27 min | 55.2° |
| July | 06:15 | 12:01 | 17:47 | 11 h 33 min | 58.2° |
| August | 06:04 | 11:58 | 17:51 | 11 h 47 min | 66.6° |
| September | 05:45 | 11:48 | 17:50 | 12 h 06 min | 78.1° |
| October | 05:27 | 11:39 | 17:52 | 12 h 25 min | 89.4° |
| November | 05:20 | 11:40 | 18:01 | 12 h 41 min | 81.4° |
| December | 05:29 | 11:53 | 18:17 | 12 h 48 min | 78.0° |
A year of daylight in Juína
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 Juína
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
16°collects the most energy over a year: 1514 kWh per kWp.
2°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 | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1467 | 97% | 3.96 | 1.1× |
| 2° off-grid best | 1478 | 98% | 3.93 | 1.1× |
| 11° = latitude | 1510 | 100% | 3.76 | 1.3× |
| 15° | 1514 | 100% | 3.66 | 1.4× |
| 16° year-round best | 1514 | 100% | 3.63 | 1.4× |
| 30° | 1477 | 98% | 3.17 | 1.7× |
| 45° | 1358 | 90% | 2.53 | 2.1× |
| 60° | 1167 | 77% | 1.81 | 2.8× |
| 70° | 1010 | 67% | 1.36 | 3.5× |
| 90° | 701 | 46% | 1.11 | 3.4× |
A fixed array in Juína produces the most over a year at 16°. The design month for an off-grid system is December: at 2° it makes 3.93 kWh per kWp a day, 8% more than at 16°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Juína at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 16° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 16° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.91 | 1.83 | 1.45 | 3.64 | 24.6 °C |
| February | 4.84 | 2.23 | 1.80 | 3.71 | 24.6 °C |
| March | 4.91 | 2.88 | 2.34 | 3.92 | 24.7 °C |
| April | 4.95 | 3.77 | 3.09 | 4.19 | 24.8 °C |
| May | 4.77 | 4.56 | 3.75 | 4.29 | 24.2 °C |
| June | 4.96 | 5.50 | 4.54 | 4.66 | 23.9 °C |
| July | 5.38 | 5.79 | 4.75 | 5.01 | 24.8 °C |
| August | 5.49 | 4.74 | 3.86 | 4.78 | 27.1 °C |
| September | 4.98 | 3.22 | 2.59 | 4.02 | 28.3 °C |
| October | 5.31 | 2.57 | 2.06 | 4.09 | 27.2 °C |
| November | 5.11 | 1.93 | 1.54 | 3.80 | 25.8 °C |
| December | 4.97 | 1.72 | 1.36 | 3.63 | 25.0 °C |
| Year | 5.05 avg | 3.40 avg | 1010 kWh | 1514 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 860 Wp of panels at 70°, versus 320 Wp at 16°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Juína
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.
2.2 mrow pitch at 70°
2.4 mrow pitch at 16°
How Juína compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
1428thof 2,264 places in Brazil for sunshine, shared: 5.05 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Brazil: 1,514 against 1,581 kWh per kWp.
−48 mindaylight on the longest day, compared with São Paulo: 12 h 48 min against 13 h 35 min.
16°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); Juína ranks joint 1428th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.36 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 11 h 27 min, +46 min compared with São Paulo.
Solar forecast for Juína, 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 Juína
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A free, live card for Juína: 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.