Solarposition.org

Kagoshima · Japan · 28.38° N · 129.49° E

Solar position in Amami

Sun position, daylight and the best solar panel angle for Amami — computed for 28.38° N, 129.49° E, 21 m above sea level.

Sunrise today06:28103° ESE
Sunset today17:43257° WSW
Best panel angle21°year-round, facing south
Off-grid angle48°best for the darkest month

The sun right now

Azimuth180.0°
Elevation49.6°
At solar noon, 12:05Open on the sun map

Sun in Amami today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn05:09sun 18° below horizon
Nautical dawn05:3712° below
Civil dawn06:046° below
Sunrise06:28103° ESE
Golden hour ends07:00sun 6° up
Solar noon12:0549.6° high
Golden hour starts17:11sun 6° up
Sunset17:43257° WSW
Civil dusk18:076° below
Nautical dusk18:3412° below
Astronomical dusk19:0218° below
Day length11 h 15 min

Sun path diagram for Amami

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 85.1° at solar noon in Amami; on the December solstice only 38.2°. Sunrise swings from 63° ENE in June to 116° ESE in December — a 54° 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
January07:1412:3317:5210 h 38 min41.7°
February06:5512:3518:1611 h 21 min51.1°
March06:2512:2918:3312 h 08 min61.8°
April05:5112:2018:5013 h 00 min73.5°
May05:2812:1819:0813 h 40 min81.8°
June05:2512:2319:2213 h 57 min85.1°
July05:3712:2819:1913 h 41 min82.1°
August05:5412:2518:5513 h 01 min73.8°
September06:0912:1518:2012 h 11 min62.4°
October06:2612:0617:4611 h 21 min51.0°
November06:4812:0717:2610 h 38 min41.7°
December07:0912:1917:3010 h 20 min38.2°

A year of daylight in Amami

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 Amami

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

21°collects the most energy over a year: 1217 kWh per kWp.

48°gives the most in the darkest month — the one an off-grid system is sized for.

50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 21°Best worst-month 48°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°115695%1.633.0×
15°1212100%1.942.5×
21° year-round best1217100%2.032.3×
28° = latitude120999%2.122.1×
30°120499%2.142.1×
45°113293%2.221.8×
48° off-grid best111091%2.221.7×
60°100182%2.181.6×
70°88673%2.091.6×
90°61751%1.762.1×

A fixed array in Amami produces the most over a year at 21°. The design month for an off-grid system is December: at 48° it makes 2.22 kWh per kWp a day, 10% more than at 21°, and costs 9% of the yearly total. Why steep panels win winter.

Off-grid solar in Amami at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 21° (year-round best).

012345January: 2.08 (70°)2.1JanFebruary: 2.27 (70°)2.3FebMarch: 2.47 (70°)2.5MarApril: 2.38 (70°)2.4AprMay: 2.14 (70°)2.1MayJune: 1.92 (70°)1.9JunJuly: 2.33 (70°)2.3JulAugust: 2.74 (70°)2.7AugSeptember: 3.07 (70°)3.1SepOctober: 3.06 (70°)3.1OctNovember: 2.58 (70°)2.6NovDecember: 2.09 (70°)2.1Dec21°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 21°Mean temp.
January2.162.482.082.0916.8 °C
February2.722.702.272.5217.1 °C
March3.552.952.473.1118.2 °C
April4.282.882.383.5220.4 °C
May4.682.632.143.6523.1 °C
June4.692.401.923.5425.7 °C
July6.222.922.334.6528.4 °C
August5.903.422.744.6228.9 °C
September4.913.803.074.1427.8 °C
October3.813.743.063.4625.3 °C
November2.733.122.582.6222.1 °C
December2.072.512.092.0318.7 °C
Year3.98 avg2.96 avg886 kWh1217 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 620 Wp of panels at 70°, versus 580 Wp at 21°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Amami

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.

3.4 mrow pitch at 70°

2.9 mrow pitch at 21°

Row spacing calculator

How Amami compares in Japan

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

70thof 1,216 places in Japan for sunshine, shared: 3.99 peak sun hours a day on flat ground.

−5%solar energy a year compared with the average place in Japan: 1,217 against 1,284 kWh per kWp.

−38 mindaylight on the longest day, compared with Tokyo: 13 h 57 min against 14 h 35 min.

21°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); Amami ranks joint 70th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.92 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 10 h 20 min, +36 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Amami, 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 Amami

What is the best solar panel angle in Amami?
For a fixed array facing south, the best year-round tilt in Amami is 21°, worth about 1217 kWh per kWp a year. An off-grid system that has to get through December does better at about 48°.
What time is sunrise and sunset in Amami today?
On 25 October 2026 the sun rises at 06:28 and sets at 17:43 local time (UTC+9), giving 11 h 15 min of daylight. Solar noon is at 12:05.
How many peak sun hours does Amami get?
On a flat surface 4.0 hours a day averaged over the year, from 2.1 in December to 6.2 in July. Panels tilted at 70° receive 2.4 sun hours a day in June.
How high does the sun get in Amami?
At solar noon the sun stands 85.1° above the horizon on the June solstice and 38.2° on the December solstice.
Is Amami a good place for solar panels?
With 4.0 peak sun hours a day on flat ground, Amami ranks joint 70th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (21°) makes about 1,217 kWh a year here, 5% less than the average place in Japan.

Places near Amami

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.