Solarposition.org

Taipei · Taiwan · 25.17° N · 121.44° E

Solar position in Danshui

Sun position, daylight and the best solar panel angle for Danshui — computed for 25.17° N, 121.44° E, 17 m above sea level.

Sunrise today05:57103° ESE
Sunset today17:18257° WSW
Best panel angle17°year-round, facing south
Off-grid angle45°best for the darkest month

The sun right now

Azimuth180.0°
Elevation52.8°
At solar noon, 11:38Open on the sun map

Sun in Danshui today

Sunday, 25 October 2026 · local time UTC+8

EventTimeDirection / height
Astronomical dawn04:40sun 18° below horizon
Nautical dawn05:0712° below
Civil dawn05:346° below
Sunrise05:57103° ESE
Golden hour ends06:28sun 6° up
Solar noon11:3852.8° high
Golden hour starts16:47sun 6° up
Sunset17:18257° WSW
Civil dusk17:426° below
Nautical dusk18:0912° below
Astronomical dusk18:3518° below
Day length11 h 21 min

Sun path diagram for Danshui

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 solstice7891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 88.3° at solar noon in Danshui; on the December solstice only 41.4°. Sunrise swings from 63° ENE in June to 116° ESE in December — a 52° 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
January06:4012:0517:3010 h 50 min44.9°
February06:2412:0717:5111 h 27 min54.3°
March05:5712:0118:0512 h 08 min65.1°
April05:2611:5318:1912 h 53 min76.7°
May05:0711:5018:3413 h 28 min85.0°
June05:0411:5518:4713 h 42 min88.3°
July05:1612:0018:4413 h 29 min85.3°
August05:3011:5718:2412 h 54 min77.0°
September05:4211:4717:5212 h 10 min65.6°
October05:5511:3817:2211 h 27 min54.2°
November06:1511:3917:0410 h 50 min44.9°
December06:3411:5217:0910 h 34 min41.4°

A year of daylight in Danshui

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 Danshui

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

17°collects the most energy over a year: 1131 kWh per kWp.

45°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 17°Best worst-month 45°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°109196%1.662.9×
15°1130100%1.952.4×
17° year-round best1131100%1.982.3×
25° = latitude112399%2.082.1×
30°111098%2.132.0×
45° off-grid best103191%2.191.7×
60°90080%2.131.4×
70°78970%2.031.5×
90°54248%1.681.9×

A fixed array in Danshui produces the most over a year at 17°. The design month for an off-grid system is December: at 45° it makes 2.19 kWh per kWp a day, 11% more than at 17°, and costs 9% of the yearly total. Why steep panels win winter.

Off-grid solar in Danshui at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 17° (year-round best).

012345January: 2.00 (70°)2.0JanFebruary: 1.96 (70°)2.0FebMarch: 2.04 (70°)2.0MarApril: 1.96 (70°)2.0AprMay: 1.83 (70°)1.8MayJune: 1.85 (70°)1.8JunJuly: 2.12 (70°)2.1JulAugust: 2.45 (70°)2.5AugSeptember: 2.69 (70°)2.7SepOctober: 2.71 (70°)2.7OctNovember: 2.28 (70°)2.3NovDecember: 2.03 (70°)2.0Dec17°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 17°Mean temp.
January2.172.382.002.0316.1 °C
February2.482.341.962.2216.5 °C
March3.112.462.042.6618.1 °C
April3.702.391.963.0021.1 °C
May4.252.281.833.3024.1 °C
June4.922.321.853.7326.4 °C
July6.042.662.124.5727.7 °C
August5.503.052.454.3227.7 °C
September4.563.322.693.7826.4 °C
October3.603.302.713.1723.7 °C
November2.572.762.282.3621.2 °C
December2.102.432.031.9817.7 °C
Year3.76 avg2.64 avg789 kWh1131 kWh

Sizing example. To run a 1 kWh-per-day load through May on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 640 Wp of panels at 70°, versus 600 Wp at 17°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Danshui

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.

3.1 mrow pitch at 70°

2.7 mrow pitch at 17°

Row spacing calculator

How Danshui compares in Taiwan

Against the other 66 places in Taiwan with climate data, for a fixed array at its best angle.

64thof 67 places in Taiwan for sunshine, shared: 3.76 peak sun hours a day on flat ground.

−10%solar energy a year compared with the average place in Taiwan: 1,131 against 1,256 kWh per kWp.

+1 mindaylight on the longest day, compared with Taipei: 13 h 42 min against 13 h 42 min.

17°best year-round tilt here; across Taiwan it runs from 17° in Keelung to 21° in Chiayi City.

Of the 67 places in Taiwan, Donggang and one other place get the most sun (4.59 peak sun hours a day) and Sanzhi the least (3.74); Danshui ranks joint 64th. In its darkest month, May, 1 kWp of off-grid panels at 70° makes 1.83 kWh a day here, against 1.85 kWh on average in Taiwan. The shortest day lasts 10 h 34 min, −1 min compared with Taipei.

The sunniest places in Taiwan

Solar forecast for Danshui, 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 Danshui

What is the best solar panel angle in Danshui?
For a fixed array facing south, the best year-round tilt in Danshui is 17°, worth about 1131 kWh per kWp a year. An off-grid system that has to get through December does better at about 45°.
What time is sunrise and sunset in Danshui today?
On 25 October 2026 the sun rises at 05:57 and sets at 17:18 local time (UTC+8), giving 11 h 21 min of daylight. Solar noon is at 11:38.
How many peak sun hours does Danshui get?
On a flat surface 3.8 hours a day averaged over the year, from 2.1 in December to 6.0 in July. Panels tilted at 70° receive 2.3 sun hours a day in May.
How high does the sun get in Danshui?
At solar noon the sun stands 88.3° above the horizon on the June solstice and 41.4° on the December solstice.
Is Danshui a good place for solar panels?
With 3.8 peak sun hours a day on flat ground, Danshui ranks joint 64th of 67 places in Taiwan for sunshine. A 1 kWp array at the best angle (17°) makes about 1,131 kWh a year here, 10% less than the average place in Taiwan.

Places near Danshui

All places in Taiwan

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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.