Solarposition.org

Saitama · Japan · 36.03° N · 139.42° E

Solar position in Higashi-Matsuyama

Sun position, daylight and the best solar panel angle for Higashi-Matsuyama — computed for 36.03° N, 139.42° E, 20 m above sea level.

Sunrise today05:57104° ESE
Sunset today16:54256° WSW
Best panel angle35°year-round, facing south
Off-grid angle40°best for the darkest month

The sun right now

Azimuth180.0°
Elevation41.9°
At solar noon, 11:26Open on the sun map

Sun in Higashi-Matsuyama today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn04:31sun 18° below horizon
Nautical dawn05:0112° below
Civil dawn05:316° below
Sunrise05:57104° ESE
Golden hour ends06:33sun 6° up
Solar noon11:2641.9° high
Golden hour starts16:19sun 6° up
Sunset16:54256° WSW
Civil dusk17:206° below
Nautical dusk17:5012° below
Astronomical dusk18:2018° below
Day length10 h 57 min

Sun path diagram for Higashi-Matsuyama

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 77.4° at solar noon in Higashi-Matsuyama; on the December solstice only 30.6°. Sunrise swings from 60° ENE in June to 119° ESE in December — a 59° 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
January06:5011:5316:5710 h 07 min34.1°
February06:2311:5617:2911 h 06 min43.4°
March05:4511:4917:5412 h 09 min54.2°
April05:0211:4118:2013 h 18 min65.8°
May04:3211:3818:4514 h 13 min74.1°
June04:2511:4419:0214 h 37 min77.4°
July04:4011:4818:5614 h 15 min74.5°
August05:0511:4518:2513 h 20 min66.1°
September05:2911:3517:4112 h 12 min54.7°
October05:5411:2616:5911 h 05 min43.3°
November06:2411:2716:3110 h 07 min34.1°
December06:4811:4016:319 h 43 min30.6°

A year of daylight in Higashi-Matsuyama

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 Higashi-Matsuyama

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

35°collects the most energy over a year: 1362 kWh per kWp.

40°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 35°Best worst-month 40°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearOctober kWh/kWp/dayBest ÷ worst month
0°115485%2.512.2×
15°129295%2.951.6×
30°1357100%3.211.3×
35° year-round best1362100%3.261.3×
36° = latitude1362100%3.261.3×
40° off-grid best1358100%3.281.3×
45°134599%3.291.3×
60°125892%3.171.7×
70°116285%2.992.0×
90°89366%2.412.9×

A fixed array in Higashi-Matsuyama produces the most over a year at 35°. The design month for an off-grid system is October: at 40° it makes 3.28 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.

Off-grid solar in Higashi-Matsuyama at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 35° (year-round best).

012345January: 4.38 (70°)4.4JanFebruary: 3.97 (70°)4.0FebMarch: 3.68 (70°)3.7MarApril: 3.16 (70°)3.2AprMay: 2.68 (70°)2.7MayJune: 2.22 (70°)2.2JunJuly: 2.24 (70°)2.2JulAugust: 2.69 (70°)2.7AugSeptember: 2.75 (70°)2.8SepOctober: 2.99 (70°)3.0OctNovember: 3.52 (70°)3.5NovDecember: 3.94 (70°)3.9Dec35°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 35°Mean temp.
January snow2.694.844.383.95-0.1 °C
February3.334.413.974.070.9 °C
March4.134.143.684.264.5 °C
April4.843.653.164.2410.1 °C
May5.173.192.684.0315.5 °C
June4.622.702.223.4219.5 °C
July4.612.762.243.4023.5 °C
August4.803.302.693.7924.5 °C
September3.813.312.753.4020.5 °C
October3.093.512.993.2614.4 °C
November2.624.023.523.398.4 °C
December2.384.403.943.562.7 °C
Year3.84 avg3.68 avg1162 kWh1362 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 530 Wp of panels at 70°, versus 360 Wp at 35°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Higashi-Matsuyama

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.

4.3 mrow pitch at 70°

3.9 mrow pitch at 35°

Row spacing calculator

How Higashi-Matsuyama compares in Japan

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

506thof 1,216 places in Japan for sunshine, shared: 3.84 peak sun hours a day on flat ground.

+6%solar energy a year compared with the average place in Japan: 1,362 against 1,284 kWh per kWp.

+2 mindaylight on the longest day, compared with Tokyo: 14 h 37 min against 14 h 35 min.

35°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); Higashi-Matsuyama ranks joint 506th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.22 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 43 min, −2 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Higashi-Matsuyama, 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 Higashi-Matsuyama

What is the best solar panel angle in Higashi-Matsuyama?
For a fixed array facing south, the best year-round tilt in Higashi-Matsuyama is 35°, worth about 1362 kWh per kWp a year. An off-grid system that has to get through October does better at about 40°.
What time is sunrise and sunset in Higashi-Matsuyama today?
On 25 October 2026 the sun rises at 05:57 and sets at 16:54 local time (UTC+9), giving 10 h 57 min of daylight. Solar noon is at 11:26.
How many peak sun hours does Higashi-Matsuyama get?
On a flat surface 3.8 hours a day averaged over the year, from 2.4 in December to 5.2 in May. Panels tilted at 70° receive 2.7 sun hours a day in June.
How high does the sun get in Higashi-Matsuyama?
At solar noon the sun stands 77.4° above the horizon on the June solstice and 30.6° on the December solstice.
Is Higashi-Matsuyama a good place for solar panels?
With 3.8 peak sun hours a day on flat ground, Higashi-Matsuyama ranks joint 506th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (35°) makes about 1,362 kWh a year here, 6% more than the average place in Japan.

Places near Higashi-Matsuyama

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.