Solarposition.org

Hainan · China · 19.55° N · 110.80° E

Solar position in Wenchang

Sun position, daylight and the best solar panel angle for Wenchang — computed for 19.55° N, 110.80° E, 17 m above sea level.

Sunrise today06:34102° ESE
Sunset today18:06257° WSW
Best panel angle14°year-round, facing south
Off-grid angle42°best for the darkest month

The sun right now

Azimuth180.0°
Elevation58.4°
At solar noon, 12:20Open on the sun map

Sun in Wenchang today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn05:20sun 18° below horizon
Nautical dawn05:4612° below
Civil dawn06:126° below
Sunrise06:34102° ESE
Golden hour ends07:04sun 6° up
Solar noon12:2058.4° high
Golden hour starts17:37sun 6° up
Sunset18:06257° WSW
Civil dusk18:296° below
Nautical dusk18:5512° below
Astronomical dusk19:2018° below
Day length11 h 32 min

Sun path diagram for Wenchang

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 solstice891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 86.1° at solar noon in Wenchang; on the December solstice only 47.0°. 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
January07:1312:4818:2211 h 09 min50.6°
February07:0212:5018:3811 h 37 min59.9°
March06:4012:4418:4712 h 08 min70.7°
April06:1512:3518:5612 h 41 min82.3°
May05:5912:3319:0713 h 08 min89.4°
June05:5912:3819:1713 h 19 min86.1°
July06:0812:4319:1713 h 09 min89.1°
August06:1812:3919:0012 h 42 min82.6°
September06:2512:2918:3412 h 09 min71.2°
October06:3312:2118:0911 h 36 min59.8°
November06:4812:2217:5611 h 09 min50.6°
December07:0612:3418:0310 h 57 min47.0°

A year of daylight in Wenchang

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 Wenchang

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: 1291 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°126398%2.112.1×
14° year-round best1291100%2.411.8×
15°1291100%2.421.8×
20° = latitude1285100%2.501.7×
30°125097%2.611.5×
42° off-grid best116890%2.651.3×
45°114188%2.651.3×
60°97576%2.541.4×
70°84065%2.391.6×
90°56844%1.922.0×

A fixed array in Wenchang produces the most over a year at 14°. The design month for an off-grid system is December: at 42° it makes 2.65 kWh per kWp a day, 10% more than at 14°, and costs 10% of the yearly total. Why steep panels win winter.

Off-grid solar in Wenchang at 70°

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

012345January: 2.46 (70°)2.5JanFebruary: 2.64 (70°)2.6FebMarch: 2.51 (70°)2.5MarApril: 2.26 (70°)2.3AprMay: 1.90 (70°)1.9MayJune: 1.69 (70°)1.7JunJuly: 1.76 (70°)1.8JulAugust: 2.08 (70°)2.1AugSeptember: 2.49 (70°)2.5SepOctober: 2.74 (70°)2.7OctNovember: 2.71 (70°)2.7NovDecember: 2.39 (70°)2.4Dec14°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 14°Mean temp.
January2.832.952.462.5619.1 °C
February3.513.182.643.0820.6 °C
March4.163.062.513.4823.2 °C
April4.982.802.263.9526.0 °C
May5.672.391.904.3227.9 °C
June5.622.141.694.2028.3 °C
July5.672.221.764.2728.1 °C
August5.242.612.084.0727.9 °C
September4.673.092.493.7927.3 °C
October4.023.362.743.4225.4 °C
November3.243.292.712.8923.1 °C
December2.652.872.392.4120.0 °C
Year4.36 avg2.83 avg840 kWh1291 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 700 Wp of panels at 70°, versus 490 Wp at 14°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Wenchang

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 Wenchang compares in China

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

278thof 2,095 places in China for sunshine, shared: 4.36 peak sun hours a day on flat ground.

+2%solar energy a year compared with the average place in China: 1,291 against 1,262 kWh per kWp.

−52 mindaylight on the longest day, compared with Shanghai: 13 h 19 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); Wenchang ranks joint 278th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.69 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 10 h 57 min, +50 min compared with Shanghai.

The sunniest places in China

Solar forecast for Wenchang, 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 Wenchang

What is the best solar panel angle in Wenchang?
For a fixed array facing south, the best year-round tilt in Wenchang is 14°, worth about 1291 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 Wenchang today?
On 25 October 2026 the sun rises at 06:34 and sets at 18:06 local time (UTC+8), giving 11 h 32 min of daylight. Solar noon is at 12:20.
How many peak sun hours does Wenchang get?
On a flat surface 4.4 hours a day averaged over the year, from 2.6 in December to 5.7 in July. Panels tilted at 70° receive 2.1 sun hours a day in June.
How high does the sun get in Wenchang?
At solar noon the sun stands 86.1° above the horizon on the June solstice and 47.0° on the December solstice.
Is Wenchang a good place for solar panels?
With 4.4 peak sun hours a day on flat ground, Wenchang ranks joint 278th of 2,095 places in China for sunshine. A 1 kWp array at the best angle (14°) makes about 1,291 kWh a year here, 2% more than the average place in China.

Places near Wenchang

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.