Roraima · Brazil · 2.82° N · 60.67° W
Solar position in Boa Vista
Sun position, daylight and the best solar panel angle for Boa Vista — computed for 2.82° N, 60.67° W, 82 m above sea level.
The sun right now
Sun in Boa Vista today
Saturday, 24 October 2026 · local time UTC−4
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:35 | sun 18° below horizon |
| Nautical dawn | 05:00 | 12° below |
| Civil dawn | 05:24 | 6° below |
| Sunrise | 05:45 | 102° ESE |
| Golden hour ends | 06:13 | sun 6° up |
| Solar noon | 11:46 | 75.3° high |
| Golden hour starts | 17:19 | sun 6° up |
| Sunset | 17:47 | 258° WSW |
| Civil dusk | 18:08 | 6° below |
| Nautical dusk | 18:33 | 12° below |
| Astronomical dusk | 18:58 | 18° below |
| Day length | 12 h 02 min | |
Sun path diagram for Boa Vista
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 69.4° at solar noon in Boa Vista; on the December solstice only 63.8°. Sunrise swings from 66° 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 | 06:14 | 12:14 | 18:13 | 11 h 59 min | 67.4° |
| February | 06:14 | 12:16 | 18:17 | 12 h 03 min | 76.8° |
| March | 06:06 | 12:09 | 18:13 | 12 h 07 min | 87.6° |
| April | 05:55 | 12:01 | 18:07 | 12 h 12 min | 80.8° |
| May | 05:51 | 11:59 | 18:07 | 12 h 15 min | 72.5° |
| June | 05:55 | 12:04 | 18:13 | 12 h 17 min | 69.4° |
| July | 06:01 | 12:09 | 18:16 | 12 h 16 min | 72.5° |
| August | 06:00 | 12:05 | 18:11 | 12 h 11 min | 80.9° |
| September | 05:52 | 11:55 | 17:59 | 12 h 07 min | 87.7° |
| October | 05:46 | 11:47 | 17:48 | 12 h 02 min | 76.3° |
| November | 05:49 | 11:48 | 17:48 | 11 h 59 min | 67.2° |
| December | 06:01 | 12:00 | 17:59 | 11 h 58 min | 63.8° |
A year of daylight in Boa Vista
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 Boa Vista
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
3°collects the most energy over a year: 1510 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 | May kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° off-grid best | 1507 | 100% | 3.61 | 1.3× |
| 3° year-round best = latitude | 1510 | 100% | 3.56 | 1.3× |
| 15° | 1486 | 98% | 3.28 | 1.4× |
| 30° | 1382 | 92% | 2.78 | 1.7× |
| 45° | 1204 | 80% | 2.14 | 2.2× |
| 60° | 969 | 64% | 1.45 | 3.2× |
| 70° | 806 | 53% | 1.07 | 3.6× |
| 90° | 539 | 36% | 0.95 | 2.8× |
A fixed array in Boa Vista produces the most over a year at 3°. The design month for an off-grid system is May: at 0° it makes 3.61 kWh per kWp a day, 1% more than at 3°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Boa Vista 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 | 5.27 | 4.41 | 3.57 | 4.23 | 28.8 °C |
| February | 5.29 | 3.65 | 2.93 | 4.20 | 29.5 °C |
| March | 5.44 | 2.89 | 2.30 | 4.28 | 29.8 °C |
| April | 5.10 | 1.91 | 1.51 | 3.99 | 28.4 °C |
| May | 4.55 | 1.38 | 1.07 | 3.56 | 26.4 °C |
| June | 4.72 | 1.31 | 1.02 | 3.68 | 25.7 °C |
| July | 4.87 | 1.27 | 0.99 | 3.81 | 25.6 °C |
| August | 5.37 | 1.53 | 1.20 | 4.22 | 26.1 °C |
| September | 5.95 | 2.54 | 2.04 | 4.72 | 26.9 °C |
| October | 5.80 | 3.63 | 2.93 | 4.63 | 27.6 °C |
| November | 5.38 | 4.28 | 3.46 | 4.32 | 28.0 °C |
| December | 5.00 | 4.37 | 3.54 | 4.02 | 28.2 °C |
| Year | 5.23 avg | 2.76 avg | 806 kWh | 1510 kWh |
Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 1,200 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 Boa Vista
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 Boa Vista compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
1089thof 2,264 places in Brazil for sunshine, shared: 5.23 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Brazil: 1,510 against 1,581 kWh per kWp.
−1 h 18 mindaylight on the longest day, compared with São Paulo: 12 h 17 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); Boa Vista ranks joint 1089th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 0.99 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 11 h 58 min, +1 h 17 min compared with São Paulo.
Solar forecast for Boa Vista, 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 Boa Vista
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A free, live card for Boa Vista: 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.