Solarposition.org

Southern District · Hong Kong · 22.23° N · 114.25° E

Solar position in Shek O

Sun position, daylight and the best solar panel angle for Shek O — computed for 22.23° N, 114.25° E, 18 m above sea level.

Sunrise today06:23103° ESE
Sunset today17:50257° WSW
Best panel angle18°year-round, facing south
Off-grid angle29°best for the darkest month

The sun right now

Azimuth180.0°
Elevation55.7°
At solar noon, 12:06Open on the sun map

Sun in Shek O today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn05:08sun 18° below horizon
Nautical dawn05:3412° below
Civil dawn06:006° below
Sunrise06:23103° ESE
Golden hour ends06:53sun 6° up
Solar noon12:0655.7° high
Golden hour starts17:20sun 6° up
Sunset17:50257° WSW
Civil dusk18:136° below
Nautical dusk18:3912° below
Astronomical dusk19:0518° below
Day length11 h 27 min

Sun path diagram for Shek O

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 solstice678910111213141516171819EquinoxDecember solstice891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 88.8° at solar noon in Shek O; on the December solstice only 44.3°. Sunrise swings from 64° ENE in June to 115° ESE in December — a 51° 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
January07:0412:3418:0411 h 00 min47.9°
February06:5012:3618:2211 h 32 min57.2°
March06:2612:3018:3412 h 08 min68.0°
April05:5812:2118:4512 h 47 min79.6°
May05:4112:1918:5813 h 17 min87.9°
June05:3912:2419:0913 h 30 min88.8°
July05:5012:2919:0813 h 18 min88.2°
August06:0212:2618:4912 h 48 min79.9°
September06:1112:1618:2012 h 09 min68.5°
October06:2112:0717:5311 h 32 min57.1°
November06:3812:0817:3811 h 00 min47.9°
December06:5712:2017:4410 h 47 min44.3°

A year of daylight in Shek O

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 Shek O

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

18°collects the most energy over a year: 1257 kWh per kWp.

29°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 18°Best worst-month 29°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearFebruary kWh/kWp/dayBest ÷ worst month
0°120696%2.531.8×
15°1255100%2.771.5×
18° year-round best1257100%2.801.5×
22° = latitude1255100%2.841.4×
29° off-grid best124199%2.871.4×
30°123798%2.871.4×
45°115492%2.821.4×
60°101080%2.621.6×
70°88871%2.411.9×
90°61949%1.832.4×

A fixed array in Shek O produces the most over a year at 18°. The design month for an off-grid system is February: at 29° it makes 2.87 kWh per kWp a day, 2% more than at 18°, and costs 1% of the yearly total. Why steep panels win winter.

Off-grid solar in Shek O at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 18° (year-round best).

012345January: 2.82 (70°)2.8JanFebruary: 2.41 (70°)2.4FebMarch: 2.15 (70°)2.1MarApril: 2.02 (70°)2.0AprMay: 1.86 (70°)1.9MayJune: 1.70 (70°)1.7JunJuly: 1.87 (70°)1.9JulAugust: 2.19 (70°)2.2AugSeptember: 2.67 (70°)2.7SepOctober: 3.19 (70°)3.2OctNovember: 3.22 (70°)3.2NovDecember: 3.08 (70°)3.1Dec18°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 18°Mean temp.
January3.013.342.822.8816.9 °C
February3.132.882.412.8018.3 °C
March3.432.612.152.8920.5 °C
April4.072.492.023.2523.3 °C
May4.752.321.863.6226.3 °C
June4.892.151.703.6228.0 °C
July5.552.361.874.1228.7 °C
August5.162.742.193.9828.5 °C
September4.793.322.673.9127.8 °C
October4.393.903.193.8525.3 °C
November3.563.883.223.3422.1 °C
December3.083.663.083.0018.0 °C
Year4.16 avg2.97 avg888 kWh1257 kWh

Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 690 Wp of panels at 70°, versus 420 Wp at 18°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Shek O

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.

2.8 mrow pitch at 70°

2.6 mrow pitch at 18°

Row spacing calculator

How Shek O compares in Hong Kong

Against the other 135 places in Hong Kong with climate data, for a fixed array at its best angle.

1stof 136 places in Hong Kong for sunshine, shared: 4.16 peak sun hours a day on flat ground.

±0%solar energy a year compared with the average place in Hong Kong: 1,257 against 1,255 kWh per kWp.

±0 mindaylight on the longest day, compared with Hong Kong: 13 h 30 min against 13 h 30 min.

18°best year-round tilt here; across Hong Kong it runs from 18° in Shek O to 20° in Fanling.

Shek O shares the top spot for sunshine among the 136 places in Hong Kong (4.16 peak sun hours a day); the least sunny are Sheung Shui and one other place with 4.11. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.70 kWh a day here, against 1.69 kWh on average in Hong Kong. The shortest day lasts 10 h 47 min, ±0 min compared with Hong Kong.

The sunniest places in Hong Kong

Solar forecast for Shek O, 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 Shek O

What is the best solar panel angle in Shek O?
For a fixed array facing south, the best year-round tilt in Shek O is 18°, worth about 1257 kWh per kWp a year. An off-grid system that has to get through February does better at about 29°.
What time is sunrise and sunset in Shek O today?
On 25 October 2026 the sun rises at 06:23 and sets at 17:50 local time (UTC+8), giving 11 h 27 min of daylight. Solar noon is at 12:06.
How many peak sun hours does Shek O get?
On a flat surface 4.2 hours a day averaged over the year, from 3.0 in January to 5.6 in July. Panels tilted at 70° receive 2.2 sun hours a day in June.
How high does the sun get in Shek O?
At solar noon the sun stands 88.8° above the horizon on the June solstice and 44.3° on the December solstice.
Is Shek O a good place for solar panels?
With 4.2 peak sun hours a day on flat ground, Shek O ranks joint 1st of 136 places in Hong Kong for sunshine. A 1 kWp array at the best angle (18°) makes about 1,257 kWh a year here, as much as the average place in Hong Kong.

Places near Shek O

All places in Hong Kong

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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.