Solarposition.org

Niari · Republic of the Congo · 4.20° S · 12.67° E

Solar position in Dolisie

Sun position, daylight and the best solar panel angle for Dolisie — computed for 4.20° S, 12.67° E, 332 m above sea level.

Sunrise today05:46102° ESE
Sunset today18:00258° WSW
Best panel angle3°year-round, facing north
Off-grid angle7°best for the darkest month

The sun right now

Azimuth180.0°
Elevation82.4°
At solar noon, 11:53Open on the sun map

Sun in Dolisie today

Saturday, 24 October 2026 · local time UTC+1

EventTimeDirection / height
Astronomical dawn04:36sun 18° below horizon
Nautical dawn05:0012° below
Civil dawn05:256° below
Sunrise05:46102° ESE
Golden hour ends06:14sun 6° up
Solar noon11:5382.4° high
Golden hour starts17:32sun 6° up
Sunset18:00258° WSW
Civil dusk18:216° below
Nautical dusk18:4612° below
Astronomical dusk19:1118° below
Day length12 h 14 min

Sun path diagram for Dolisie

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice789101112131415161718EquinoxDecember solstice789101112131415161718Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 62.4° at solar noon in Dolisie; on the December solstice only 70.8°. 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January06:1012:2018:3012 h 19 min74.4°
February06:1612:2218:2912 h 13 min83.7°
March06:1312:1618:1912 h 06 min85.5°
April06:0812:0718:0712 h 00 min73.9°
May06:0812:0518:0311 h 55 min65.6°
June06:1412:1118:0711 h 53 min62.4°
July06:1812:1518:1311 h 55 min65.4°
August06:1212:1218:1212 h 00 min73.8°
September05:5912:0218:0512 h 06 min85.2°
October05:4711:5318:0012 h 13 min83.4°
November05:4511:5518:0412 h 19 min74.2°
December05:5612:0718:1812 h 22 min70.8°

A year of daylight in Dolisie

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Dolisie

Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

3°collects the most energy over a year: 1145 kWh per kWp.

7°gives the most in the darkest month — the one an off-grid system is sized for.

30%40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 3°Best worst-month 7°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearSeptember kWh/kWp/dayBest ÷ worst month
0°1144100%2.471.6×
3° year-round best1145100%2.481.6×
4° = latitude1145100%2.481.6×
7° off-grid best1143100%2.481.6×
15°112698%2.461.6×
30°105292%2.341.6×
45°92781%2.101.7×
60°76267%1.772.0×
70°64556%1.512.1×
90°45640%0.931.9×

A fixed array in Dolisie produces the most over a year at 3°. The design month for an off-grid system is September: at 7° it makes 2.48 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.

Off-grid solar in Dolisie at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 3° (year-round best).

012345January: 1.23 (70°)1.2JanFebruary: 1.51 (70°)1.5FebMarch: 2.08 (70°)2.1MarApril: 2.51 (70°)2.5AprMay: 2.40 (70°)2.4MayJune: 2.24 (70°)2.2JunJuly: 2.15 (70°)2.1JulAugust: 1.88 (70°)1.9AugSeptember: 1.51 (70°)1.5SepOctober: 1.33 (70°)1.3OctNovember: 1.19 (70°)1.2NovDecember: 1.18 (70°)1.2Dec3°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 3°Mean temp.
January4.581.561.233.6025.0 °C
February4.661.901.513.6825.3 °C
March5.002.572.083.9925.3 °C
April4.613.082.513.7025.2 °C
May3.772.952.403.0325.0 °C
June3.302.752.242.6623.9 °C
July3.262.632.152.6323.5 °C
August3.242.321.882.5924.2 °C
September3.141.891.512.4825.7 °C
October3.551.681.332.7925.7 °C
November4.171.511.193.2924.7 °C
December4.131.491.183.2424.6 °C
Year3.95 avg2.20 avg645 kWh1145 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 1,000 Wp of panels at 70°, versus 480 Wp at 3°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Dolisie

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.

1.8 mrow pitch at 70°

2.1 mrow pitch at 3°

Row spacing calculator

How Dolisie 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.

22ndof 23 places in the Republic of the Congo for sunshine: 3.95 peak sun hours a day on flat ground.

−11%solar energy a year compared with the average place in the Republic of the Congo: 1,145 against 1,280 kWh per kWp.

±0 mindaylight on the longest day, compared with Brazzaville: 12 h 22 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); Dolisie ranks 22nd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.18 kWh a day here, against 1.15 kWh on average in the Republic of the Congo. The shortest day lasts 11 h 53 min, ±0 min compared with Brazzaville.

The sunniest places in the Republic of the Congo

Solar forecast for Dolisie, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in Dolisie

What is the best solar panel angle in Dolisie?
For a fixed array facing north, the best year-round tilt in Dolisie is 3°, worth about 1145 kWh per kWp a year. An off-grid system that has to get through September does better at about 7°.
What time is sunrise and sunset in Dolisie today?
On 24 October 2026 the sun rises at 05:46 and sets at 18:00 local time (UTC+1), giving 12 h 14 min of daylight. Solar noon is at 11:53.
How many peak sun hours does Dolisie get?
On a flat surface 3.9 hours a day averaged over the year, from 3.1 in September to 5.0 in March. Panels tilted at 70° receive 1.5 sun hours a day in December.
How high does the sun get in Dolisie?
At solar noon the sun stands 62.4° above the horizon on the June solstice and 70.8° on the December solstice.
Is Dolisie a good place for solar panels?
With 3.9 peak sun hours a day on flat ground, Dolisie ranks 22nd of 23 places in the Republic of the Congo for sunshine. A 1 kWp array at the best angle (3°) makes about 1,145 kWh a year here, 11% less than the average place in the Republic of the Congo.

Places near Dolisie

All places in Republic of the Congo

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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.