Solarposition.org

Shanghai · China · 31.25° N · 121.39° E

Solar position in Putuo

Sun position, daylight and the best solar panel angle for Putuo — computed for 31.25° N, 121.39° E, 10 m above sea level.

Sunrise today06:04104° ESE
Sunset today17:12256° WSW
Best panel angle26°year-round, facing south
Off-grid angle47°best for the darkest month

The sun right now

Azimuth180.0°
Elevation46.7°
At solar noon, 11:38Open on the sun map

Sun in Putuo today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn04:42sun 18° below horizon
Nautical dawn05:1112° below
Civil dawn05:396° below
Sunrise06:04104° ESE
Golden hour ends06:37sun 6° up
Solar noon11:3846.7° high
Golden hour starts16:39sun 6° up
Sunset17:12256° WSW
Civil dusk17:376° below
Nautical dusk18:0512° below
Astronomical dusk18:3318° below
Day length11 h 08 min

Sun path diagram for Putuo

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 solstice56789101112131415161718EquinoxDecember solstice78910111213141516Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 82.2° at solar noon in Putuo; on the December solstice only 35.3°. Sunrise swings from 62° ENE in June to 117° ESE in December — a 55° 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
January06:5212:0517:1910 h 27 min38.9°
February06:3012:0817:4611 h 16 min48.2°
March05:5712:0118:0612 h 09 min59.0°
April05:2011:5318:2613 h 06 min70.6°
May04:5511:5118:4613 h 52 min78.9°
June04:5011:5619:0114 h 11 min82.2°
July05:0412:0018:5713 h 53 min79.2°
August05:2311:5718:3113 h 08 min70.9°
September05:4111:4717:5212 h 11 min59.5°
October06:0111:3817:1611 h 15 min48.1°
November06:2611:4016:5310 h 27 min38.9°
December06:4811:5216:5510 h 07 min35.3°

A year of daylight in Putuo

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 Putuo

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

26°collects the most energy over a year: 1191 kWh per kWp.

47°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 26°Best worst-month 47°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearJanuary kWh/kWp/dayBest ÷ worst month
0°109892%1.852.2×
15°117599%2.251.8×
26° year-round best1191100%2.461.6×
30°1189100%2.521.5×
31° = latitude1188100%2.531.5×
45°113996%2.651.3×
47° off-grid best112895%2.651.3×
60°103086%2.631.4×
70°92778%2.531.6×
90°67356%2.142.0×

A fixed array in Putuo produces the most over a year at 26°. The design month for an off-grid system is January: at 47° it makes 2.65 kWh per kWp a day, 8% more than at 26°, and costs 5% of the yearly total. Why steep panels win winter.

Off-grid solar in Putuo at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 26° (year-round best).

012345January: 2.53 (70°)2.5JanFebruary: 2.54 (70°)2.5FebMarch: 2.90 (70°)2.9MarApril: 2.64 (70°)2.6AprMay: 2.27 (70°)2.3MayJune: 1.88 (70°)1.9JunJuly: 2.22 (70°)2.2JulAugust: 2.54 (70°)2.5AugSeptember: 2.64 (70°)2.6SepOctober: 2.92 (70°)2.9OctNovember: 2.69 (70°)2.7NovDecember: 2.72 (70°)2.7Dec26°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 26°Mean temp.
January2.222.862.532.464.9 °C
February2.692.892.542.746.1 °C
March3.763.342.903.549.6 °C
April4.473.132.643.8014.7 °C
May4.752.752.273.7220.0 °C
June4.212.341.883.1623.8 °C
July5.162.782.223.8527.8 °C
August4.993.162.543.9128.0 °C
September4.043.242.643.4524.5 °C
October3.443.502.923.2919.5 °C
November2.543.152.692.6814.1 °C
December2.223.102.722.547.5 °C
Year3.72 avg3.02 avg927 kWh1191 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 630 Wp of panels at 70°, versus 480 Wp at 26°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Putuo

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.

3.7 mrow pitch at 70°

3.2 mrow pitch at 26°

Row spacing calculator

How Putuo compares in China

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

1173rdof 2,095 places in China for sunshine, shared: 3.72 peak sun hours a day on flat ground.

−6%solar energy a year compared with the average place in China: 1,191 against 1,262 kWh per kWp.

±0 mindaylight on the longest day, compared with Shanghai: 14 h 11 min against 14 h 11 min.

26°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); Putuo ranks joint 1173rd. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.88 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 10 h 07 min, ±0 min compared with Shanghai.

The sunniest places in China

Solar forecast for Putuo, 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 Putuo

What is the best solar panel angle in Putuo?
For a fixed array facing south, the best year-round tilt in Putuo is 26°, worth about 1191 kWh per kWp a year. An off-grid system that has to get through January does better at about 47°.
What time is sunrise and sunset in Putuo today?
On 25 October 2026 the sun rises at 06:04 and sets at 17:12 local time (UTC+8), giving 11 h 08 min of daylight. Solar noon is at 11:38.
How many peak sun hours does Putuo get?
On a flat surface 3.7 hours a day averaged over the year, from 2.2 in December to 5.2 in July. Panels tilted at 70° receive 2.3 sun hours a day in June.
How high does the sun get in Putuo?
At solar noon the sun stands 82.2° above the horizon on the June solstice and 35.3° on the December solstice.
Is Putuo a good place for solar panels?
With 3.7 peak sun hours a day on flat ground, Putuo ranks joint 1173rd of 2,095 places in China for sunshine. A 1 kWp array at the best angle (26°) makes about 1,191 kWh a year here, 6% less than the average place in China.

Places near Putuo

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.