Solarposition.org

Okinawa · Japan · 26.20° N · 127.73° E

Solar position in Kanegusuku

Sun position, daylight and the best solar panel angle for Kanegusuku — computed for 26.20° N, 127.73° E, 18 m above sea level.

Sunrise today06:33103° ESE
Sunset today17:52257° WSW
Best panel angle19°year-round, facing south
Off-grid angle44°best for the darkest month

The sun right now

Azimuth180.0°
Elevation51.7°
At solar noon, 12:13Open on the sun map

Sun in Kanegusuku today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn05:15sun 18° below horizon
Nautical dawn05:4212° below
Civil dawn06:096° below
Sunrise06:33103° ESE
Golden hour ends07:04sun 6° up
Solar noon12:1351.7° high
Golden hour starts17:21sun 6° up
Sunset17:52257° WSW
Civil dusk18:166° below
Nautical dusk18:4312° below
Astronomical dusk19:1018° below
Day length11 h 19 min

Sun path diagram for Kanegusuku

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 solstice678910111213141516171819EquinoxDecember solstice891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 87.2° at solar noon in Kanegusuku; on the December solstice only 40.4°. Sunrise swings from 63° ENE in June to 116° ESE in December — a 53° 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
January07:1712:4018:0310 h 46 min43.9°
February07:0012:4218:2511 h 25 min53.2°
March06:3212:3618:4012 h 08 min64.0°
April06:0012:2718:5512 h 55 min75.6°
May05:4012:2519:1113 h 31 min84.0°
June05:3712:3019:2413 h 47 min87.2°
July05:4912:3519:2113 h 33 min84.3°
August06:0412:3219:0012 h 56 min75.9°
September06:1712:2218:2712 h 10 min64.5°
October06:3112:1317:5611 h 25 min53.1°
November06:5112:1417:3710 h 46 min43.9°
December07:1212:2617:4110 h 30 min40.4°

A year of daylight in Kanegusuku

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 Kanegusuku

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

19°collects the most energy over a year: 1299 kWh per kWp.

44°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 19°Best worst-month 44°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°124296%1.892.7×
15°1297100%2.232.2×
19° year-round best1299100%2.302.1×
26° = latitude129299%2.411.9×
30°128199%2.461.8×
44° off-grid best120493%2.541.6×
45°119692%2.541.6×
60°104881%2.491.4×
70°92171%2.381.6×
90°63249%1.982.2×

A fixed array in Kanegusuku produces the most over a year at 19°. The design month for an off-grid system is December: at 44° it makes 2.54 kWh per kWp a day, 10% more than at 19°, and costs 7% of the yearly total. Why steep panels win winter.

Off-grid solar in Kanegusuku at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 19° (year-round best).

0123456January: 2.34 (70°)2.3JanFebruary: 2.56 (70°)2.6FebMarch: 2.61 (70°)2.6MarApril: 2.39 (70°)2.4AprMay: 2.10 (70°)2.1MayJune: 1.98 (70°)2.0JunJuly: 2.23 (70°)2.2JulAugust: 2.63 (70°)2.6AugSeptember: 3.10 (70°)3.1SepOctober: 3.20 (70°)3.2OctNovember: 2.78 (70°)2.8NovDecember: 2.38 (70°)2.4Dec19°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 19°Mean temp.
January2.462.792.342.3418.8 °C
February3.113.072.562.8519.0 °C
March3.863.132.613.3519.7 °C
April4.472.902.393.6521.7 °C
May4.932.602.103.8224.3 °C
June5.442.481.984.0826.9 °C
July6.452.802.234.8128.8 °C
August5.953.292.634.6429.0 °C
September5.173.843.104.3128.2 °C
October4.123.933.203.6826.1 °C
November3.023.382.782.8423.6 °C
December2.402.862.382.3020.6 °C
Year4.29 avg3.09 avg921 kWh1299 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 600 Wp of panels at 70°, versus 510 Wp at 19°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Kanegusuku

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.

3.2 mrow pitch at 70°

2.7 mrow pitch at 19°

Row spacing calculator

How Kanegusuku compares in Japan

Against the other 1,215 places in Japan with climate data, for a fixed array at its best angle.

6thof 1,216 places in Japan for sunshine, shared: 4.29 peak sun hours a day on flat ground.

+1%solar energy a year compared with the average place in Japan: 1,299 against 1,284 kWh per kWp.

−48 mindaylight on the longest day, compared with Tokyo: 13 h 47 min against 14 h 35 min.

19°best year-round tilt here; across Japan it runs from 17° in Miyakojima to 41° in Kushiro.

Of the 1,216 places in Japan, Miyakojima gets the most sun (4.34 peak sun hours a day) and Wakkanai and one other place the least (3.17); Kanegusuku ranks joint 6th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.98 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 10 h 30 min, +46 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Kanegusuku, 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 Kanegusuku

What is the best solar panel angle in Kanegusuku?
For a fixed array facing south, the best year-round tilt in Kanegusuku is 19°, worth about 1299 kWh per kWp a year. An off-grid system that has to get through December does better at about 44°.
What time is sunrise and sunset in Kanegusuku today?
On 25 October 2026 the sun rises at 06:33 and sets at 17:52 local time (UTC+9), giving 11 h 19 min of daylight. Solar noon is at 12:13.
How many peak sun hours does Kanegusuku get?
On a flat surface 4.3 hours a day averaged over the year, from 2.4 in December to 6.5 in July. Panels tilted at 70° receive 2.5 sun hours a day in June.
How high does the sun get in Kanegusuku?
At solar noon the sun stands 87.2° above the horizon on the June solstice and 40.4° on the December solstice.
Is Kanegusuku a good place for solar panels?
With 4.3 peak sun hours a day on flat ground, Kanegusuku ranks joint 6th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (19°) makes about 1,299 kWh a year here, 1% more than the average place in Japan.

Places near Kanegusuku

All places in Japan

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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.