Solarposition.org

Irkutsk Oblast · Russia · 52.75° N · 103.65° E

Solar position in Usol’ye-Sibirskoye

Sun position, daylight and the best solar panel angle for Usol’ye-Sibirskoye — computed for 52.75° N, 103.65° E, 435 m above sea level.

Sunrise today07:48109° ESE
Sunset today17:49251° WSW
Best panel angle48°year-round, facing south
Off-grid angle80°best for the darkest month

The sun right now

Azimuth180.0°
Elevation25.2°
At solar noon, 12:49Open on the sun map

Sun in Usol’ye-Sibirskoye today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn05:53sun 18° below horizon
Nautical dawn06:3312° below
Civil dawn07:136° below
Sunrise07:48109° ESE
Golden hour ends08:38sun 6° up
Solar noon12:4925.2° high
Golden hour starts16:59sun 6° up
Sunset17:49251° WSW
Civil dusk18:246° below
Nautical dusk19:0412° below
Astronomical dusk19:4418° below
Day length10 h 01 min

Sun path diagram for Usol’ye-Sibirskoye

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 solstice56789101112131415161718192021EquinoxDecember solstice10111213141516Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 60.7° at solar noon in Usol’ye-Sibirskoye; on the December solstice only 13.9°. Sunrise swings from 47° NE in June to 130° SE in December — a 82° 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
January09:0313:1617:298 h 26 min17.4°
February08:1013:1918:2810 h 18 min26.7°
March07:0613:1219:1912 h 13 min37.5°
April05:5413:0420:1414 h 20 min49.1°
May05:0013:0221:0416 h 05 min57.4°
June04:4013:0721:3316 h 53 min60.7°
July05:0713:1121:1516 h 09 min57.7°
August05:5613:0820:1914 h 23 min49.4°
September06:4912:5819:0712 h 18 min38.0°
October07:4112:4917:5710 h 16 min26.6°
November08:3812:5017:038 h 26 min17.4°
December09:1513:0316:517 h 37 min13.9°

A year of daylight in Usol’ye-Sibirskoye

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 Usol’ye-Sibirskoye

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

48°collects the most energy over a year: 1409 kWh per kWp.

80°gives the most in the darkest month — the one an off-grid system is sized for.

20%30%40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 48°Best worst-month 80°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°102973%0.657.4×
15°122587%1.204.2×
30°135496%1.702.9×
45°1408100%2.092.4×
48° year-round best1409100%2.162.4×
53° = latitude1405100%2.252.3×
60°138498%2.362.2×
70°132694%2.462.1×
80° off-grid best123688%2.492.0×
90°111979%2.462.1×

A fixed array in Usol’ye-Sibirskoye produces the most over a year at 48°. The design month for an off-grid system is December: at 80° it makes 2.49 kWh per kWp a day, 16% more than at 48°, and costs 12% of the yearly total. Why steep panels win winter.

Off-grid solar in Usol’ye-Sibirskoye at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 48° (year-round best).

0123456January: 3.38 (70°)3.4JanFebruary: 4.58 (70°)4.6FebMarch: 5.24 (70°)5.2MarApril: 4.20 (70°)4.2AprMay: 3.78 (70°)3.8MayJune: 3.54 (70°)3.5JunJuly: 3.37 (70°)3.4JulAugust: 3.51 (70°)3.5AugSeptember: 3.61 (70°)3.6SepOctober: 3.35 (70°)3.3OctNovember: 2.65 (70°)2.7NovDecember: 2.46 (70°)2.5Dec48°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 48°Mean temp.
January snow1.163.473.382.99-20.4 °C
February snow2.224.764.584.26-17.4 °C
March snow3.675.635.245.17-8.1 °C
April4.694.704.204.772.0 °C
May5.444.363.784.639.0 °C
June5.874.213.544.5017.0 °C
July5.394.053.374.2219.4 °C
August4.584.153.514.1316.4 °C
September3.394.143.613.889.0 °C
October snow2.153.713.353.270.2 °C
November snow1.172.842.652.40-9.6 °C
December snow0.822.562.462.16-18.0 °C
Year3.38 avg4.04 avg1326 kWh1409 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 480 Wp of panels at 70°, versus 550 Wp at 48°. The steep array is 12% smaller for the same winter. Size your own system.

Row spacing in Usol’ye-Sibirskoye

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.

10.7 mrow pitch at 70°

9.2 mrow pitch at 48°

Row spacing calculator

How Usol’ye-Sibirskoye compares in Russia

Against the other 979 places in Russia with climate data, for a fixed array at its best angle.

288thof 980 places in Russia for sunshine, shared: 3.39 peak sun hours a day on flat ground.

+18%solar energy a year compared with the average place in Russia: 1,409 against 1,196 kWh per kWp.

−41 mindaylight on the longest day, compared with Moscow: 16 h 53 min against 17 h 34 min.

48°best year-round tilt here; across Russia it runs from 32° in Derbent to 54° in Yakutsk.

Of the 980 places in Russia, Novorossiysk gets the most sun (3.96 peak sun hours a day) and Polyarnyy the least (1.93); Usol’ye-Sibirskoye ranks joint 288th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.46 kWh a day here, against 1.31 kWh on average in Russia. The shortest day lasts 7 h 37 min, +36 min compared with Moscow.

The sunniest places in Russia

Solar forecast for Usol’ye-Sibirskoye, 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 Usol’ye-Sibirskoye

What is the best solar panel angle in Usol’ye-Sibirskoye?
For a fixed array facing south, the best year-round tilt in Usol’ye-Sibirskoye is 48°, worth about 1409 kWh per kWp a year. An off-grid system that has to get through December does better at about 80°.
What time is sunrise and sunset in Usol’ye-Sibirskoye today?
On 25 October 2026 the sun rises at 07:48 and sets at 17:49 local time (UTC+8), giving 10 h 01 min of daylight. Solar noon is at 12:49.
How many peak sun hours does Usol’ye-Sibirskoye get?
On a flat surface 3.4 hours a day averaged over the year, from 0.8 in December to 5.9 in June. Panels tilted at 70° receive 2.6 sun hours a day in December.
How high does the sun get in Usol’ye-Sibirskoye?
At solar noon the sun stands 60.7° above the horizon on the June solstice and 13.9° on the December solstice.
Is Usol’ye-Sibirskoye a good place for solar panels?
With 3.4 peak sun hours a day on flat ground, Usol’ye-Sibirskoye ranks joint 288th of 980 places in Russia for sunshine. A 1 kWp array at the best angle (48°) makes about 1,409 kWh a year here, 18% more than the average place in Russia.

Places near Usol’ye-Sibirskoye

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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.