Rio de Janeiro · Brazil · 22.11° S · 41.47° W
Solar position in Quissamã
Sun position, daylight and the best solar panel angle for Quissamã — computed for 22.11° S, 41.47° W, 9 m above sea level.
The sun right now
Sun in Quissamã today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 03:49 | sun 18° below horizon |
| Nautical dawn | 04:16 | 12° below |
| Civil dawn | 04:43 | 6° below |
| Sunrise | 05:06 | 103° ESE |
| Golden hour ends | 05:37 | sun 6° up |
| Solar noon | 11:30 | 79.8° high |
| Golden hour starts | 17:23 | sun 6° up |
| Sunset | 17:53 | 257° WSW |
| Civil dusk | 18:16 | 6° below |
| Nautical dusk | 18:43 | 12° below |
| Astronomical dusk | 19:11 | 18° below |
| Day length | 12 h 47 min | |
Sun path diagram for Quissamã
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 44.5° at solar noon in Quissamã; on the December solstice only 88.7°. 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 | 05:19 | 11:57 | 18:34 | 13 h 15 min | 87.7° |
| February | 05:38 | 11:59 | 18:20 | 12 h 41 min | 78.3° |
| March | 05:49 | 11:52 | 17:55 | 12 h 06 min | 67.5° |
| April | 06:00 | 11:44 | 17:28 | 11 h 28 min | 55.9° |
| May | 06:13 | 11:42 | 17:11 | 10 h 59 min | 47.6° |
| June | 06:24 | 11:47 | 17:11 | 10 h 47 min | 44.5° |
| July | 06:23 | 11:52 | 17:21 | 10 h 58 min | 47.5° |
| August | 06:05 | 11:49 | 17:33 | 11 h 28 min | 55.9° |
| September | 05:36 | 11:39 | 17:41 | 12 h 05 min | 67.4° |
| October | 05:09 | 11:30 | 17:52 | 12 h 43 min | 78.7° |
| November | 04:53 | 11:31 | 18:09 | 13 h 16 min | 87.9° |
| December | 04:59 | 11:44 | 18:28 | 13 h 29 min | 88.7° |
A year of daylight in Quissamã
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 Quissamã
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
22°collects the most energy over a year: 1572 kWh per kWp.
28°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° | 1476 | 94% | 2.87 | 1.8× |
| 15° | 1563 | 99% | 3.55 | 1.4× |
| 22° year-round best = latitude | 1572 | 100% | 3.79 | 1.3× |
| 28° off-grid best | 1564 | 99% | 3.96 | 1.2× |
| 30° | 1558 | 99% | 4.01 | 1.2× |
| 45° | 1463 | 93% | 4.22 | 1.3× |
| 60° | 1285 | 82% | 4.17 | 1.7× |
| 70° | 1128 | 72% | 3.99 | 2.2× |
| 90° | 776 | 49% | 3.31 | 3.1× |
A fixed array in Quissamã produces the most over a year at 22°. The design month for an off-grid system is June: at 28° it makes 3.96 kWh per kWp a day, 4% more than at 22°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Quissamã at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 22° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 22° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.45 | 2.53 | 2.04 | 4.70 | 25.4 °C |
| February | 6.47 | 3.28 | 2.66 | 5.00 | 25.7 °C |
| March | 5.57 | 3.92 | 3.20 | 4.66 | 25.5 °C |
| April | 4.77 | 4.56 | 3.75 | 4.39 | 24.6 °C |
| May | 3.88 | 4.55 | 3.77 | 3.86 | 22.7 °C |
| June | 3.62 | 4.80 | 3.99 | 3.79 | 21.9 °C |
| July | 3.75 | 4.80 | 4.00 | 3.89 | 21.3 °C |
| August | 4.45 | 4.75 | 3.95 | 4.32 | 21.6 °C |
| September | 4.87 | 3.88 | 3.21 | 4.27 | 22.3 °C |
| October | 5.39 | 3.18 | 2.61 | 4.33 | 23.4 °C |
| November | 5.51 | 2.53 | 2.05 | 4.14 | 23.8 °C |
| December | 6.07 | 2.30 | 1.84 | 4.38 | 24.8 °C |
| Year | 5.06 avg | 3.76 avg | 1128 kWh | 1572 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 640 Wp of panels at 70°, versus 310 Wp at 22°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Quissamã
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.
2.8 mrow pitch at 70°
2.7 mrow pitch at 22°
How Quissamã compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
1410thof 2,264 places in Brazil for sunshine, shared: 5.06 peak sun hours a day on flat ground.
−1%solar energy a year compared with the average place in Brazil: 1,572 against 1,581 kWh per kWp.
−6 mindaylight on the longest day, compared with São Paulo: 13 h 29 min against 13 h 35 min.
22°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); Quissamã ranks joint 1410th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.84 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 10 h 47 min, +6 min compared with São Paulo.
Solar forecast for Quissamã, 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 Quissamã
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A free, live card for Quissamã: 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.