Espírito Santo · Brazil · 20.13° S · 40.31° W
Solar position in Serra
Sun position, daylight and the best solar panel angle for Serra — computed for 20.13° S, 40.31° W, 57 m above sea level.
The sun right now
Sun in Serra today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 03:47 | sun 18° below horizon |
| Nautical dawn | 04:14 | 12° below |
| Civil dawn | 04:41 | 6° below |
| Sunrise | 05:04 | 103° ESE |
| Golden hour ends | 05:33 | sun 6° up |
| Solar noon | 11:25 | 81.8° high |
| Golden hour starts | 17:17 | sun 6° up |
| Sunset | 17:46 | 257° WSW |
| Civil dusk | 18:09 | 6° below |
| Nautical dusk | 18:36 | 12° below |
| Astronomical dusk | 19:03 | 18° below |
| Day length | 12 h 43 min | |
Sun path diagram for Serra
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 46.4° at solar noon in Serra; on the December solstice only 86.7°. Sunrise swings from 65° ENE in June to 115° ESE in December — a 50° 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 | 05:18 | 11:52 | 18:26 | 13 h 08 min | 89.7° |
| February | 05:35 | 11:54 | 18:13 | 12 h 38 min | 80.3° |
| March | 05:45 | 11:48 | 17:51 | 12 h 06 min | 69.5° |
| April | 05:54 | 11:39 | 17:25 | 11 h 31 min | 57.9° |
| May | 06:05 | 11:37 | 17:10 | 11 h 05 min | 49.6° |
| June | 06:15 | 11:43 | 17:10 | 10 h 55 min | 46.4° |
| July | 06:15 | 11:47 | 17:20 | 11 h 05 min | 49.5° |
| August | 05:58 | 11:44 | 17:30 | 11 h 31 min | 57.9° |
| September | 05:31 | 11:34 | 17:37 | 12 h 05 min | 69.3° |
| October | 05:06 | 11:25 | 17:45 | 12 h 39 min | 80.7° |
| November | 04:52 | 11:27 | 18:01 | 13 h 09 min | 89.9° |
| December | 04:58 | 11:39 | 18:19 | 13 h 21 min | 86.7° |
A year of daylight in Serra
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 Serra
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
20°collects the most energy over a year: 1526 kWh per kWp.
25°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° | 1451 | 95% | 2.89 | 1.8× |
| 15° | 1522 | 100% | 3.51 | 1.4× |
| 20° year-round best = latitude | 1526 | 100% | 3.67 | 1.3× |
| 25° off-grid best | 1521 | 100% | 3.80 | 1.2× |
| 30° | 1506 | 99% | 3.91 | 1.3× |
| 45° | 1403 | 92% | 4.07 | 1.4× |
| 60° | 1223 | 80% | 3.98 | 1.8× |
| 70° | 1067 | 70% | 3.79 | 2.2× |
| 90° | 732 | 48% | 3.10 | 2.9× |
A fixed array in Serra produces the most over a year at 20°. The design month for an off-grid system is June: at 25° it makes 3.80 kWh per kWp a day, 4% more than at 20°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Serra at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 20° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 20° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.31 | 2.38 | 1.92 | 4.64 | 24.7 °C |
| February | 6.26 | 3.07 | 2.50 | 4.85 | 24.9 °C |
| March | 5.50 | 3.72 | 3.04 | 4.56 | 24.8 °C |
| April | 4.67 | 4.24 | 3.50 | 4.21 | 23.8 °C |
| May | 3.90 | 4.35 | 3.62 | 3.77 | 21.9 °C |
| June | 3.62 | 4.54 | 3.79 | 3.67 | 21.0 °C |
| July | 3.82 | 4.62 | 3.87 | 3.83 | 20.4 °C |
| August | 4.39 | 4.43 | 3.69 | 4.14 | 20.7 °C |
| September | 4.85 | 3.71 | 3.08 | 4.20 | 21.8 °C |
| October | 5.23 | 2.99 | 2.45 | 4.19 | 23.1 °C |
| November | 5.20 | 2.33 | 1.89 | 3.93 | 23.4 °C |
| December | 5.77 | 2.17 | 1.74 | 4.22 | 24.2 °C |
| Year | 4.96 avg | 3.55 avg | 1067 kWh | 1526 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 680 Wp of panels at 70°, versus 320 Wp at 20°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Serra
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.
2.7 mrow pitch at 70°
2.6 mrow pitch at 20°
How Serra compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
1551stof 2,264 places in Brazil for sunshine, shared: 4.96 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Brazil: 1,526 against 1,581 kWh per kWp.
−14 mindaylight on the longest day, compared with São Paulo: 13 h 21 min against 13 h 35 min.
20°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); Serra ranks joint 1551st. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.74 kWh a day here, against 1.56 kWh on average in Brazil. The shortest day lasts 10 h 55 min, +14 min compared with São Paulo.
Solar forecast for Serra, 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 Serra
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Places near Serra
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A free, live card for Serra: 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.