Solarposition.org

Ehime · Japan · 33.79° N · 132.71° E

Solar position in Masaki-chō

Sun position, daylight and the best solar panel angle for Masaki-chō — computed for 33.79° N, 132.71° E, 7 m above sea level.

Sunrise today06:21104° ESE
Sunset today17:24256° WSW
Best panel angle29°year-round, facing south
Off-grid angle52°best for the darkest month

The sun right now

Azimuth180.0°
Elevation44.2°
At solar noon, 11:53Open on the sun map

Sun in Masaki-chō today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn04:58sun 18° below horizon
Nautical dawn05:2712° below
Civil dawn05:566° below
Sunrise06:21104° ESE
Golden hour ends06:56sun 6° up
Solar noon11:5344.2° high
Golden hour starts16:49sun 6° up
Sunset17:24256° WSW
Civil dusk17:496° below
Nautical dusk18:1812° below
Astronomical dusk18:4718° below
Day length11 h 02 min

Sun path diagram for Masaki-chō

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 solstice8910111213141516Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 79.7° at solar noon in Masaki-chō; on the December solstice only 32.8°. Sunrise swings from 61° ENE in June to 118° ESE in December — a 57° 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
January07:1212:2017:2810 h 17 min36.3°
February06:4712:2217:5811 h 11 min45.6°
March06:1212:1618:2112 h 09 min56.4°
April05:3112:0818:4413 h 13 min68.1°
May05:0412:0519:0714 h 03 min76.4°
June04:5812:1019:2214 h 24 min79.7°
July05:1312:1519:1714 h 05 min76.7°
August05:3512:1218:4913 h 14 min68.3°
September05:5612:0218:0712 h 12 min57.0°
October06:1811:5317:2811 h 10 min45.6°
November06:4611:5417:0310 h 17 min36.3°
December07:0912:0717:049 h 54 min32.8°

A year of daylight in Masaki-chō

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 Masaki-chō

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

29°collects the most energy over a year: 1300 kWh per kWp.

52°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 29°Best worst-month 52°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°116690%1.702.6×
15°126898%2.202.0×
29° year-round best1300100%2.551.7×
30°1300100%2.571.7×
34° = latitude1297100%2.641.6×
45°126197%2.791.4×
52° off-grid best121894%2.831.4×
60°115289%2.831.4×
70°104580%2.771.6×
90°76959%2.422.0×

A fixed array in Masaki-chō produces the most over a year at 29°. The design month for an off-grid system is December: at 52° it makes 2.83 kWh per kWp a day, 11% more than at 29°, and costs 6% of the yearly total. Why steep panels win winter.

Off-grid solar in Masaki-chō at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 29° (year-round best).

012345January: 2.94 (70°)2.9JanFebruary: 3.14 (70°)3.1FebMarch: 3.37 (70°)3.4MarApril: 3.06 (70°)3.1AprMay: 2.62 (70°)2.6MayJune: 2.14 (70°)2.1JunJuly: 2.29 (70°)2.3JulAugust: 2.78 (70°)2.8AugSeptember: 2.92 (70°)2.9SepOctober: 3.25 (70°)3.3OctNovember: 3.10 (70°)3.1NovDecember: 2.77 (70°)2.8Dec29°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 29°Mean temp.
January2.343.322.942.794.9 °C
February3.043.573.143.296.0 °C
March4.083.863.373.998.7 °C
April4.943.593.064.2813.3 °C
May5.323.142.624.2017.8 °C
June4.652.632.143.5021.5 °C
July5.002.832.293.7525.2 °C
August5.213.432.784.1426.2 °C
September4.203.542.923.7023.1 °C
October3.503.863.253.5417.9 °C
November2.613.603.103.0012.6 °C
December2.093.162.772.557.2 °C
Year3.92 avg3.38 avg1045 kWh1300 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 550 Wp of panels at 70°, versus 460 Wp at 29°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Masaki-chō

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.

4.0 mrow pitch at 70°

3.5 mrow pitch at 29°

Row spacing calculator

How Masaki-chō compares in Japan

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

194thof 1,216 places in Japan for sunshine, shared: 3.92 peak sun hours a day on flat ground.

+1%solar energy a year compared with the average place in Japan: 1,300 against 1,284 kWh per kWp.

−11 mindaylight on the longest day, compared with Tokyo: 14 h 24 min against 14 h 35 min.

29°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); Masaki-chō ranks joint 194th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.14 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 54 min, +10 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Masaki-chō, 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 Masaki-chō

What is the best solar panel angle in Masaki-chō?
For a fixed array facing south, the best year-round tilt in Masaki-chō is 29°, worth about 1300 kWh per kWp a year. An off-grid system that has to get through December does better at about 52°.
What time is sunrise and sunset in Masaki-chō today?
On 25 October 2026 the sun rises at 06:21 and sets at 17:24 local time (UTC+9), giving 11 h 02 min of daylight. Solar noon is at 11:53.
How many peak sun hours does Masaki-chō get?
On a flat surface 3.9 hours a day averaged over the year, from 2.1 in December to 5.3 in May. Panels tilted at 70° receive 2.6 sun hours a day in June.
How high does the sun get in Masaki-chō?
At solar noon the sun stands 79.7° above the horizon on the June solstice and 32.8° on the December solstice.
Is Masaki-chō a good place for solar panels?
With 3.9 peak sun hours a day on flat ground, Masaki-chō ranks joint 194th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (29°) makes about 1,300 kWh a year here, 1% more than the average place in Japan.

Places near Masaki-chō

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.