Sangha · Republic of the Congo · 1.61° N · 16.05° E
Solar position in Ouesso
Sun position, daylight and the best solar panel angle for Ouesso — computed for 1.61° N, 16.05° E, 348 m above sea level.
The sun right now
Sun in Ouesso today
Saturday, 24 October 2026 · local time UTC+1
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:27 | sun 18° below horizon |
| Nautical dawn | 04:52 | 12° below |
| Civil dawn | 05:16 | 6° below |
| Sunrise | 05:37 | 102° ESE |
| Golden hour ends | 06:05 | sun 6° up |
| Solar noon | 11:39 | 76.6° high |
| Golden hour starts | 17:14 | sun 6° up |
| Sunset | 17:42 | 258° WSW |
| Civil dusk | 18:03 | 6° below |
| Nautical dusk | 18:27 | 12° below |
| Astronomical dusk | 18:52 | 18° below |
| Day length | 12 h 04 min | |
Sun path diagram for Ouesso
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 68.2° at solar noon in Ouesso; on the December solstice only 65.0°. 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 | 06:05 | 12:07 | 18:08 | 12 h 03 min | 68.5° |
| February | 06:07 | 12:09 | 18:11 | 12 h 04 min | 77.9° |
| March | 05:59 | 12:02 | 18:06 | 12 h 07 min | 88.7° |
| April | 05:49 | 11:54 | 17:59 | 12 h 09 min | 79.7° |
| May | 05:46 | 11:52 | 17:58 | 12 h 12 min | 71.4° |
| June | 05:51 | 11:57 | 18:04 | 12 h 13 min | 68.2° |
| July | 05:56 | 12:02 | 18:08 | 12 h 12 min | 71.2° |
| August | 05:54 | 11:59 | 18:03 | 12 h 09 min | 79.6° |
| September | 05:45 | 11:48 | 17:52 | 12 h 07 min | 89.0° |
| October | 05:38 | 11:40 | 17:42 | 12 h 04 min | 77.6° |
| November | 05:40 | 11:41 | 17:42 | 12 h 03 min | 68.4° |
| December | 05:52 | 11:53 | 17:54 | 12 h 02 min | 65.0° |
A year of daylight in Ouesso
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 Ouesso
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: 1377 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 | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° off-grid best | 1376 | 100% | 3.25 | 1.3× |
| 2° = latitude | 1377 | 100% | 3.22 | 1.3× |
| 3° year-round best | 1377 | 100% | 3.20 | 1.3× |
| 15° | 1354 | 98% | 2.95 | 1.5× |
| 30° | 1262 | 92% | 2.49 | 1.8× |
| 45° | 1106 | 80% | 1.93 | 2.2× |
| 60° | 902 | 65% | 1.34 | 3.0× |
| 70° | 762 | 55% | 1.12 | 3.1× |
| 90° | 526 | 38% | 0.98 | 2.5× |
A fixed array in Ouesso produces the most over a year at 3°. The design month for an off-grid system is July: at 0° it makes 3.25 kWh per kWp a day, 2% more than at 3°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Ouesso 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 | 5.28 | 4.24 | 3.47 | 4.27 | 25.9 °C |
| February | 5.16 | 3.49 | 2.83 | 4.13 | 26.7 °C |
| March | 5.19 | 2.78 | 2.24 | 4.14 | 26.0 °C |
| April | 5.18 | 1.97 | 1.57 | 4.10 | 25.7 °C |
| May | 4.75 | 1.44 | 1.13 | 3.72 | 25.5 °C |
| June | 4.26 | 1.44 | 1.13 | 3.32 | 25.1 °C |
| July | 4.10 | 1.42 | 1.12 | 3.20 | 25.0 °C |
| August | 4.15 | 1.55 | 1.23 | 3.27 | 24.8 °C |
| September | 4.54 | 2.16 | 1.74 | 3.62 | 24.3 °C |
| October | 4.71 | 2.94 | 2.39 | 3.80 | 24.4 °C |
| November | 4.69 | 3.57 | 2.92 | 3.80 | 24.6 °C |
| December | 4.86 | 4.05 | 3.32 | 3.94 | 25.1 °C |
| Year | 4.74 avg | 2.58 avg | 762 kWh | 1377 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 1,060 Wp of panels at 70°, versus 370 Wp at 3°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Ouesso
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 Ouesso compares in the Republic of the Congo
Against the other 22 places in the Republic of the Congo with climate data, for a fixed array at its best angle.
3rdof 23 places in the Republic of the Congo for sunshine, shared: 4.74 peak sun hours a day on flat ground.
+8%solar energy a year compared with the average place in the Republic of the Congo: 1,377 against 1,280 kWh per kWp.
−9 mindaylight on the longest day, compared with Brazzaville: 12 h 13 min against 12 h 22 min.
3°best year-round tilt here; across the Republic of the Congo it runs from 1° in Owando to 5° in Mindouli.
Of the 23 places in the Republic of the Congo, Mindouli and one other place get the most sun (4.91 peak sun hours a day) and Mossendjo the least (3.94); Ouesso ranks joint 3rd. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 1.12 kWh a day here, against 1.15 kWh on average in the Republic of the Congo. The shortest day lasts 12 h 02 min, +9 min compared with Brazzaville.
Solar forecast for Ouesso, 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 Ouesso
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A free, live card for Ouesso: 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.