Rio Grande do Norte · Brazil · 5.63° S · 35.43° W
Solar position in Ceará-Mirim
Sun position, daylight and the best solar panel angle for Ceará-Mirim — computed for 5.63° S, 35.43° W, 37 m above sea level.
The sun right now
Sun in Ceará-Mirim today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 03:46 | sun 18° below horizon |
| Nautical dawn | 04:11 | 12° below |
| Civil dawn | 04:36 | 6° below |
| Sunrise | 04:57 | 102° ESE |
| Golden hour ends | 05:25 | sun 6° up |
| Solar noon | 11:05 | 83.8° high |
| Golden hour starts | 16:46 | sun 6° up |
| Sunset | 17:14 | 258° WSW |
| Civil dusk | 17:35 | 6° below |
| Nautical dusk | 18:00 | 12° below |
| Astronomical dusk | 18:24 | 18° below |
| Day length | 12 h 16 min | |
Sun path diagram for Ceará-Mirim
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 60.9° at solar noon in Ceará-Mirim; on the December solstice only 72.2°. Sunrise swings from 67° ENE in June to 114° 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 | 05:21 | 11:33 | 17:44 | 12 h 24 min | 75.8° |
| February | 05:27 | 11:35 | 17:42 | 12 h 15 min | 85.2° |
| March | 05:25 | 11:28 | 17:31 | 12 h 06 min | 84.0° |
| April | 05:21 | 11:20 | 17:18 | 11 h 57 min | 72.4° |
| May | 05:23 | 11:18 | 17:13 | 11 h 50 min | 64.1° |
| June | 05:29 | 11:23 | 17:17 | 11 h 48 min | 60.9° |
| July | 05:33 | 11:28 | 17:23 | 11 h 50 min | 64.0° |
| August | 05:26 | 11:24 | 17:23 | 11 h 57 min | 72.4° |
| September | 05:11 | 11:14 | 17:17 | 12 h 06 min | 83.8° |
| October | 04:58 | 11:06 | 17:14 | 12 h 15 min | 84.8° |
| November | 04:55 | 11:07 | 17:19 | 12 h 24 min | 75.6° |
| December | 05:06 | 11:19 | 17:33 | 12 h 27 min | 72.2° |
A year of daylight in Ceará-Mirim
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 Ceará-Mirim
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
4°collects the most energy over a year: 1677 kWh per kWp.
18°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° | 1672 | 100% | 3.66 | 1.4× |
| 4° year-round best | 1677 | 100% | 3.79 | 1.4× |
| 6° = latitude | 1676 | 100% | 3.85 | 1.3× |
| 15° | 1653 | 99% | 4.07 | 1.2× |
| 18° off-grid best | 1638 | 98% | 4.12 | 1.2× |
| 30° | 1539 | 92% | 4.24 | 1.4× |
| 45° | 1339 | 80% | 4.17 | 1.8× |
| 60° | 1072 | 64% | 3.85 | 2.8× |
| 70° | 880 | 53% | 3.52 | 3.6× |
| 90° | 582 | 35% | 2.58 | 2.7× |
A fixed array in Ceará-Mirim produces the most over a year at 4°. The design month for an off-grid system is June: at 18° it makes 4.12 kWh per kWp a day, 9% more than at 4°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Ceará-Mirim at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 4° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 4° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.05 | 1.41 | 1.10 | 4.68 | 27.4 °C |
| February | 6.03 | 1.98 | 1.56 | 4.72 | 27.5 °C |
| March | 5.88 | 2.86 | 2.30 | 4.66 | 27.6 °C |
| April | 5.35 | 3.66 | 2.97 | 4.31 | 27.4 °C |
| May | 5.09 | 4.34 | 3.53 | 4.15 | 27.1 °C |
| June | 4.62 | 4.31 | 3.52 | 3.79 | 26.3 °C |
| July | 4.87 | 4.40 | 3.60 | 4.00 | 25.6 °C |
| August | 5.68 | 4.32 | 3.54 | 4.63 | 25.5 °C |
| September | 6.26 | 3.48 | 2.83 | 5.03 | 26.0 °C |
| October | 6.55 | 2.30 | 1.84 | 5.17 | 26.7 °C |
| November | 6.62 | 1.43 | 1.11 | 5.13 | 27.1 °C |
| December | 6.34 | 1.29 | 0.99 | 4.88 | 27.4 °C |
| Year | 5.78 avg | 2.99 avg | 880 kWh | 1677 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 1,190 Wp of panels at 70°, versus 310 Wp at 4°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Ceará-Mirim
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.
1.9 mrow pitch at 70°
2.1 mrow pitch at 4°
How Ceará-Mirim compares in Brazil
Against the other 2,263 places in Brazil with climate data, for a fixed array at its best angle.
260thof 2,264 places in Brazil for sunshine, shared: 5.78 peak sun hours a day on flat ground.
+6%solar energy a year compared with the average place in Brazil: 1,677 against 1,581 kWh per kWp.
−1 h 08 mindaylight on the longest day, compared with São Paulo: 12 h 27 min against 13 h 35 min.
4°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); Ceará-Mirim ranks joint 260th. In its darkest month, December, 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 48 min, +1 h 07 min compared with São Paulo.
Solar forecast for Ceará-Mirim, 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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A free, live card for Ceará-Mirim: 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.