Solarposition.org

Guangdong · China · 22.78° N · 115.35° E

Solar position in Shanwei

Sun position, daylight and the best solar panel angle for Shanwei — computed for 22.78° N, 115.35° E, 9 m above sea level.

Sunrise today06:19103° ESE
Sunset today17:45257° WSW
Best panel angle20°year-round, facing south
Off-grid angle21°best for the darkest month

The sun right now

Azimuth180.0°
Elevation55.1°
At solar noon, 12:02Open on the sun map

Sun in Shanwei today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn05:04sun 18° below horizon
Nautical dawn05:3012° below
Civil dawn05:566° below
Sunrise06:19103° ESE
Golden hour ends06:50sun 6° up
Solar noon12:0255.1° high
Golden hour starts17:15sun 6° up
Sunset17:45257° WSW
Civil dusk18:086° below
Nautical dusk18:3412° below
Astronomical dusk19:0118° below
Day length11 h 26 min

Sun path diagram for Shanwei

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 solstice6789101112131415161718EquinoxDecember solstice891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 89.3° at solar noon in Shanwei; on the December solstice only 43.8°. 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
January07:0012:2917:5810 h 58 min47.3°
February06:4612:3218:1811 h 31 min56.7°
March06:2212:2518:2912 h 08 min67.4°
April05:5312:1718:4112 h 48 min79.1°
May05:3512:1518:5413 h 19 min87.4°
June05:3412:2019:0613 h 32 min89.3°
July05:4412:2519:0413 h 20 min87.7°
August05:5712:2118:4612 h 49 min79.3°
September06:0612:1118:1612 h 09 min67.9°
October06:1712:0317:4811 h 31 min56.5°
November06:3512:0417:3310 h 58 min47.3°
December06:5412:1617:3810 h 44 min43.8°

A year of daylight in Shanwei

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 Shanwei

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

20°collects the most energy over a year: 1285 kWh per kWp.

21°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 20°Best worst-month 21°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearMarch kWh/kWp/dayBest ÷ worst month
0°122595%2.821.8×
15°1282100%2.961.4×
20° year-round best1285100%2.971.4×
21° off-grid best1285100%2.971.4×
23° = latitude1284100%2.971.4×
30°126999%2.951.4×
45°118892%2.781.4×
60°104581%2.481.7×
70°92172%2.222.0×
90°64450%1.562.6×

A fixed array in Shanwei produces the most over a year at 20°. The design month for an off-grid system is March: at 21° it makes 2.97 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.

Off-grid solar in Shanwei at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 20° (year-round best).

012345January: 3.01 (70°)3.0JanFebruary: 2.57 (70°)2.6FebMarch: 2.22 (70°)2.2MarApril: 2.05 (70°)2.1AprMay: 1.83 (70°)1.8MayJune: 1.68 (70°)1.7JunJuly: 1.89 (70°)1.9JulAugust: 2.23 (70°)2.2AugSeptember: 2.76 (70°)2.8SepOctober: 3.35 (70°)3.4OctNovember: 3.37 (70°)3.4NovDecember: 3.31 (70°)3.3Dec20°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 20°Mean temp.
January3.103.543.013.0515.6 °C
February3.263.052.572.9817.2 °C
March3.482.682.222.9719.5 °C
April4.092.522.053.2722.5 °C
May4.652.291.833.5225.5 °C
June4.832.131.683.5527.3 °C
July5.582.381.894.1128.1 °C
August5.242.792.234.0327.9 °C
September4.893.412.764.0227.0 °C
October4.504.083.354.0224.3 °C
November3.614.043.373.4921.0 °C
December3.173.903.313.2016.8 °C
Year4.20 avg3.07 avg921 kWh1285 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 400 Wp at 20°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Shanwei

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.

2.9 mrow pitch at 70°

2.7 mrow pitch at 20°

Row spacing calculator

How Shanwei compares in China

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

373rdof 2,095 places in China for sunshine, shared: 4.20 peak sun hours a day on flat ground.

+2%solar energy a year compared with the average place in China: 1,285 against 1,262 kWh per kWp.

−39 mindaylight on the longest day, compared with Shanghai: 13 h 32 min against 14 h 11 min.

20°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); Shanwei ranks joint 373rd. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.68 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 10 h 44 min, +37 min compared with Shanghai.

The sunniest places in China

Solar forecast for Shanwei, 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 Shanwei

What is the best solar panel angle in Shanwei?
For a fixed array facing south, the best year-round tilt in Shanwei is 20°, worth about 1285 kWh per kWp a year. An off-grid system that has to get through March does better at about 21°.
What time is sunrise and sunset in Shanwei today?
On 25 October 2026 the sun rises at 06:19 and sets at 17:45 local time (UTC+8), giving 11 h 26 min of daylight. Solar noon is at 12:02.
How many peak sun hours does Shanwei get?
On a flat surface 4.2 hours a day averaged over the year, from 3.1 in January to 5.6 in July. Panels tilted at 70° receive 2.1 sun hours a day in June.
How high does the sun get in Shanwei?
At solar noon the sun stands 89.3° above the horizon on the June solstice and 43.8° on the December solstice.
Is Shanwei a good place for solar panels?
With 4.2 peak sun hours a day on flat ground, Shanwei ranks joint 373rd of 2,095 places in China for sunshine. A 1 kWp array at the best angle (20°) makes about 1,285 kWh a year here, 2% more than the average place in China.

Places near Shanwei

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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.