Luanda Norte · Angola · 8.24° S · 19.53° E
Solar position in Cuilo
Sun position, daylight and the best solar panel angle for Cuilo — computed for 8.24° S, 19.53° E, 1059 m above sea level.
The sun right now
Sun in Cuilo today
Saturday, 24 October 2026 · local time UTC+1
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:04 | sun 18° below horizon |
| Nautical dawn | 04:29 | 12° below |
| Civil dawn | 04:54 | 6° below |
| Sunrise | 05:15 | 102° ESE |
| Golden hour ends | 05:43 | sun 6° up |
| Solar noon | 11:26 | 86.4° high |
| Golden hour starts | 17:08 | sun 6° up |
| Sunset | 17:36 | 258° WSW |
| Civil dusk | 17:57 | 6° below |
| Nautical dusk | 18:22 | 12° below |
| Astronomical dusk | 18:47 | 18° below |
| Day length | 12 h 21 min | |
Sun path diagram for Cuilo
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 58.3° at solar noon in Cuilo; on the December solstice only 74.8°. Sunrise swings from 66° 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 | 05:37 | 11:53 | 18:08 | 12 h 31 min | 78.4° |
| February | 05:45 | 11:55 | 18:04 | 12 h 19 min | 87.8° |
| March | 05:45 | 11:49 | 17:52 | 12 h 06 min | 81.4° |
| April | 05:44 | 11:40 | 17:36 | 11 h 53 min | 69.8° |
| May | 05:47 | 11:38 | 17:29 | 11 h 43 min | 61.5° |
| June | 05:54 | 11:43 | 17:33 | 11 h 39 min | 58.3° |
| July | 05:57 | 11:48 | 17:39 | 11 h 42 min | 61.4° |
| August | 05:48 | 11:45 | 17:41 | 11 h 53 min | 69.7° |
| September | 05:32 | 11:35 | 17:37 | 12 h 06 min | 81.2° |
| October | 05:16 | 11:26 | 17:36 | 12 h 19 min | 87.5° |
| November | 05:12 | 11:27 | 17:43 | 12 h 31 min | 78.3° |
| December | 05:21 | 11:39 | 17:58 | 12 h 36 min | 74.8° |
A year of daylight in Cuilo
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 Cuilo
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
12°collects the most energy over a year: 1512 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 | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° off-grid best | 1486 | 98% | 3.87 | 1.1× |
| 8° = latitude | 1509 | 100% | 3.72 | 1.2× |
| 12° year-round best | 1512 | 100% | 3.63 | 1.3× |
| 15° | 1510 | 100% | 3.55 | 1.4× |
| 30° | 1453 | 96% | 3.06 | 1.7× |
| 45° | 1319 | 87% | 2.43 | 2.1× |
| 60° | 1118 | 74% | 1.74 | 2.8× |
| 70° | 959 | 63% | 1.35 | 3.3× |
| 90° | 666 | 44% | 1.16 | 3.1× |
A fixed array in Cuilo produces the most over a year at 12°. The design month for an off-grid system is December: at 0° it makes 3.87 kWh per kWp a day, 7% more than at 12°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Cuilo at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 12° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 12° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.86 | 1.74 | 1.39 | 3.69 | 22.6 °C |
| February | 5.05 | 2.15 | 1.74 | 3.92 | 23.1 °C |
| March | 5.05 | 2.79 | 2.28 | 4.05 | 23.2 °C |
| April | 5.10 | 3.66 | 3.02 | 4.27 | 23.0 °C |
| May | 5.45 | 4.96 | 4.10 | 4.77 | 23.4 °C |
| June | 5.31 | 5.40 | 4.48 | 4.76 | 22.5 °C |
| July | 5.23 | 5.01 | 4.15 | 4.63 | 22.7 °C |
| August | 4.84 | 3.79 | 3.10 | 4.07 | 25.0 °C |
| September | 4.96 | 3.06 | 2.48 | 4.01 | 25.5 °C |
| October | 5.17 | 2.37 | 1.91 | 4.04 | 24.3 °C |
| November | 5.06 | 1.82 | 1.46 | 3.86 | 22.9 °C |
| December | 4.81 | 1.69 | 1.35 | 3.63 | 22.3 °C |
| Year | 5.07 avg | 3.21 avg | 959 kWh | 1512 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 870 Wp of panels at 70°, versus 320 Wp at 12°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Cuilo
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.
2.0 mrow pitch at 70°
2.2 mrow pitch at 12°
How Cuilo compares in Angola
Against the other 131 places in Angola with climate data, for a fixed array at its best angle.
71stof 132 places in Angola for sunshine, shared: 5.08 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Angola: 1,512 against 1,554 kWh per kWp.
−2 mindaylight on the longest day, compared with Luanda: 12 h 36 min against 12 h 39 min.
12°best year-round tilt here; across Angola it runs from 3° in Buco Zau to 20° in Ondjiva.
Of the 132 places in Angola, Ondjiva gets the most sun (6.24 peak sun hours a day) and Buco Zau the least (3.97); Cuilo ranks joint 71st. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.35 kWh a day here, against 1.35 kWh on average in Angola. The shortest day lasts 11 h 39 min, +2 min compared with Luanda.
Solar forecast for Cuilo, 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 Cuilo
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Places near Cuilo
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A free, live card for Cuilo: 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.