Solarposition.org

Hainan · China · 19.46° N · 109.66° E

Solar position in Lanyang

Sun position, daylight and the best solar panel angle for Lanyang — computed for 19.46° N, 109.66° E, 199 m above sea level.

Sunrise today06:39102° ESE
Sunset today18:11257° WSW
Best panel angle14°year-round, facing south
Off-grid angle42°best for the darkest month

The sun right now

Azimuth180.0°
Elevation58.5°
At solar noon, 12:25Open on the sun map

Sun in Lanyang today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn05:25sun 18° below horizon
Nautical dawn05:5012° below
Civil dawn06:166° below
Sunrise06:39102° ESE
Golden hour ends07:08sun 6° up
Solar noon12:2558.5° high
Golden hour starts17:41sun 6° up
Sunset18:11257° WSW
Civil dusk18:336° below
Nautical dusk18:5912° below
Astronomical dusk19:2518° below
Day length11 h 32 min

Sun path diagram for Lanyang

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 solstice78910111213141516171819EquinoxDecember solstice89101112131415161718Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 86.0° at solar noon in Lanyang; on the December solstice only 47.1°. Sunrise swings from 65° ENE in June to 115° ESE in December — a 50° 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
January07:1812:5218:2711 h 09 min50.6°
February07:0612:5518:4311 h 37 min60.0°
March06:4412:4818:5212 h 08 min70.8°
April06:1912:4019:0012 h 41 min82.4°
May06:0412:3719:1113 h 07 min89.3°
June06:0312:4319:2213 h 18 min86.0°
July06:1312:4719:2113 h 08 min89.0°
August06:2312:4419:0512 h 42 min82.6°
September06:2912:3418:3812 h 09 min71.2°
October06:3712:2518:1411 h 37 min59.9°
November06:5212:2718:0111 h 09 min50.6°
December07:1012:3918:0810 h 58 min47.1°

A year of daylight in Lanyang

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 Lanyang

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

14°collects the most energy over a year: 1262 kWh per kWp.

42°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 14°Best worst-month 42°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°123198%2.191.9×
14° year-round best1262100%2.511.6×
15°1262100%2.531.6×
19° = latitude1259100%2.591.5×
30°122697%2.721.4×
42° off-grid best115091%2.771.2×
45°112589%2.771.2×
60°96777%2.661.4×
70°83766%2.501.7×
90°57445%2.022.0×

A fixed array in Lanyang produces the most over a year at 14°. The design month for an off-grid system is December: at 42° it makes 2.77 kWh per kWp a day, 11% more than at 14°, and costs 9% of the yearly total. Why steep panels win winter.

Off-grid solar in Lanyang at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 14° (year-round best).

012345January: 2.63 (70°)2.6JanFebruary: 2.72 (70°)2.7FebMarch: 2.47 (70°)2.5MarApril: 2.20 (70°)2.2AprMay: 1.85 (70°)1.8MayJune: 1.66 (70°)1.7JunJuly: 1.72 (70°)1.7JulAugust: 1.98 (70°)2.0AugSeptember: 2.39 (70°)2.4SepOctober: 2.67 (70°)2.7OctNovember: 2.77 (70°)2.8NovDecember: 2.50 (70°)2.5Dec14°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 14°Mean temp.
January2.963.132.632.7118.0 °C
February3.613.272.723.1820.4 °C
March4.113.022.473.4223.6 °C
April4.822.732.203.8126.7 °C
May5.402.331.854.1128.0 °C
June5.352.111.664.0128.0 °C
July5.362.171.724.0527.6 °C
August4.872.471.983.7927.2 °C
September4.472.962.393.6326.5 °C
October3.923.262.673.3424.3 °C
November3.293.342.772.9522.0 °C
December2.732.992.502.5118.6 °C
Year4.24 avg2.81 avg837 kWh1262 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 710 Wp of panels at 70°, versus 470 Wp at 14°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Lanyang

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.

2.6 mrow pitch at 70°

2.4 mrow pitch at 14°

Row spacing calculator

How Lanyang compares in China

Against the other 2,094 places in China with climate data, for a fixed array at its best angle.

351stof 2,095 places in China for sunshine, shared: 4.24 peak sun hours a day on flat ground.

±0%solar energy a year compared with the average place in China: 1,262 against 1,262 kWh per kWp.

−52 mindaylight on the longest day, compared with Shanghai: 13 h 18 min against 14 h 11 min.

14°best year-round tilt here; across China it runs from 14° in Haikou to 52° in Xilinji.

Of the 2,095 places in China, Nyêmo gets the most sun (5.75 peak sun hours a day) and Baima and 11 other places the least (2.91); Lanyang ranks joint 351st. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.66 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 10 h 58 min, +50 min compared with Shanghai.

The sunniest places in China

Solar forecast for Lanyang, 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 Lanyang

What is the best solar panel angle in Lanyang?
For a fixed array facing south, the best year-round tilt in Lanyang is 14°, worth about 1262 kWh per kWp a year. An off-grid system that has to get through December does better at about 42°.
What time is sunrise and sunset in Lanyang today?
On 25 October 2026 the sun rises at 06:39 and sets at 18:11 local time (UTC+8), giving 11 h 32 min of daylight. Solar noon is at 12:25.
How many peak sun hours does Lanyang get?
On a flat surface 4.2 hours a day averaged over the year, from 2.7 in December to 5.4 in May. Panels tilted at 70° receive 2.1 sun hours a day in June.
How high does the sun get in Lanyang?
At solar noon the sun stands 86.0° above the horizon on the June solstice and 47.1° on the December solstice.
Is Lanyang a good place for solar panels?
With 4.2 peak sun hours a day on flat ground, Lanyang ranks joint 351st of 2,095 places in China for sunshine. A 1 kWp array at the best angle (14°) makes about 1,262 kWh a year here, as much as the average place in China.

Places near Lanyang

All places in China

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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.