Ogooué-Maritime · Gabon · 0.72° S · 8.78° E
Solar position in Port-Gentil
Sun position, daylight and the best solar panel angle for Port-Gentil — computed for 0.72° S, 8.78° E, 4 m above sea level.
The sun right now
Sun in Port-Gentil today
Saturday, 24 October 2026 · local time UTC+1
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:54 | sun 18° below horizon |
| Nautical dawn | 05:19 | 12° below |
| Civil dawn | 05:44 | 6° below |
| Sunrise | 06:05 | 102° ESE |
| Golden hour ends | 06:33 | sun 6° up |
| Solar noon | 12:09 | 78.9° high |
| Golden hour starts | 17:45 | sun 6° up |
| Sunset | 18:13 | 258° WSW |
| Civil dusk | 18:34 | 6° below |
| Nautical dusk | 18:58 | 12° below |
| Astronomical dusk | 19:23 | 18° below |
| Day length | 12 h 08 min | |
Sun path diagram for Port-Gentil
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 65.8° at solar noon in Port-Gentil; on the December solstice only 67.3°. Sunrise swings from 67° 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 | 06:31 | 12:36 | 18:40 | 12 h 09 min | 70.9° |
| February | 06:34 | 12:38 | 18:42 | 12 h 08 min | 80.3° |
| March | 06:28 | 12:32 | 18:35 | 12 h 06 min | 88.9° |
| April | 06:20 | 12:23 | 18:26 | 12 h 05 min | 77.3° |
| May | 06:18 | 12:21 | 18:23 | 12 h 05 min | 69.0° |
| June | 06:24 | 12:26 | 18:29 | 12 h 05 min | 65.8° |
| July | 06:28 | 12:31 | 18:33 | 12 h 05 min | 68.9° |
| August | 06:25 | 12:28 | 18:30 | 12 h 05 min | 77.3° |
| September | 06:14 | 12:17 | 18:21 | 12 h 06 min | 88.7° |
| October | 06:05 | 12:09 | 18:13 | 12 h 08 min | 79.9° |
| November | 06:06 | 12:10 | 18:15 | 12 h 09 min | 70.8° |
| December | 06:17 | 12:22 | 18:27 | 12 h 10 min | 67.3° |
A year of daylight in Port-Gentil
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 Port-Gentil
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
1°collects the most energy over a year: 1260 kWh per kWp.
4°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 | August kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1260 | 100% | 3.19 | 1.2× |
| 1° year-round best = latitude | 1260 | 100% | 3.20 | 1.2× |
| 4° off-grid best | 1259 | 100% | 3.23 | 1.2× |
| 15° | 1233 | 98% | 3.27 | 1.2× |
| 30° | 1142 | 91% | 3.19 | 1.4× |
| 45° | 994 | 79% | 2.95 | 1.8× |
| 60° | 805 | 64% | 2.56 | 2.4× |
| 70° | 680 | 54% | 2.23 | 2.5× |
| 90° | 473 | 38% | 1.45 | 2.0× |
A fixed array in Port-Gentil produces the most over a year at 1°. The design month for an off-grid system is August: at 4° it makes 3.23 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Port-Gentil at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 1° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 1° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.59 | 1.49 | 1.17 | 3.61 | 26.8 °C |
| February | 4.64 | 1.69 | 1.33 | 3.65 | 27.2 °C |
| March | 4.79 | 2.29 | 1.83 | 3.78 | 27.5 °C |
| April | 4.63 | 2.92 | 2.35 | 3.67 | 27.3 °C |
| May | 4.34 | 3.26 | 2.64 | 3.45 | 26.4 °C |
| June | 4.09 | 3.32 | 2.71 | 3.27 | 24.5 °C |
| July | 4.02 | 3.14 | 2.58 | 3.22 | 23.6 °C |
| August | 4.00 | 2.73 | 2.23 | 3.20 | 24.1 °C |
| September | 4.26 | 2.33 | 1.87 | 3.40 | 25.1 °C |
| October | 4.44 | 1.78 | 1.41 | 3.53 | 25.8 °C |
| November | 4.16 | 1.38 | 1.08 | 3.28 | 26.2 °C |
| December | 4.31 | 1.43 | 1.12 | 3.39 | 26.4 °C |
| Year | 4.35 avg | 2.32 avg | 680 kWh | 1260 kWh |
Sizing example. To run a 1 kWh-per-day load through November on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 1,090 Wp of panels at 70°, versus 370 Wp at 1°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Port-Gentil
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°
2.0 mrow pitch at 1°
How Port-Gentil compares in Gabon
Against the other 14 places in Gabon with climate data, for a fixed array at its best angle.
4thof 15 places in Gabon for sunshine: 4.35 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in Gabon: 1,260 against 1,229 kWh per kWp.
+1 mindaylight on the longest day, compared with Libreville: 12 h 10 min against 12 h 09 min.
1°best year-round tilt here; across Gabon it runs from 0° in Lambaréné to 3° in Oyem.
Of the 15 places in Gabon, Bitam and one other place get the most sun (4.39 peak sun hours a day) and Tchibanga and one other place the least (3.96); Port-Gentil ranks 4th. In its darkest month, November, 1 kWp of off-grid panels at 70° makes 1.08 kWh a day here, against 1.10 kWh on average in Gabon. The shortest day lasts 12 h 05 min, −1 min compared with Libreville.
Solar forecast for Port-Gentil, 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 Port-Gentil
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Places near Port-Gentil
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A free, live card for Port-Gentil: 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.