Solarposition.org

Kochi · Japan · 33.60° N · 133.68° E

Solar position in Tosayamadachō-nakano

Sun position, daylight and the best solar panel angle for Tosayamadachō-nakano — computed for 33.60° N, 133.68° E, 41 m above sea level.

Sunrise today06:17104° ESE
Sunset today17:20256° WSW
Best panel angle30°year-round, facing south
Off-grid angle41°best for the darkest month

The sun right now

Azimuth180.0°
Elevation44.3°
At solar noon, 11:49Open on the sun map

Sun in Tosayamadachō-nakano today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn04:54sun 18° below horizon
Nautical dawn05:2312° below
Civil dawn05:526° below
Sunrise06:17104° ESE
Golden hour ends06:51sun 6° up
Solar noon11:4944.3° high
Golden hour starts16:46sun 6° up
Sunset17:20256° WSW
Civil dusk17:456° below
Nautical dusk18:1512° below
Astronomical dusk18:4418° below
Day length11 h 03 min

Sun path diagram for Tosayamadachō-nakano

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 79.8° at solar noon in Tosayamadachō-nakano; on the December solstice only 33.0°. 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
January07:0712:1617:2510 h 17 min36.5°
February06:4312:1917:5411 h 11 min45.8°
March06:0812:1218:1712 h 09 min56.6°
April05:2812:0418:4013 h 12 min68.2°
May05:0112:0119:0214 h 02 min76.6°
June04:5512:0719:1814 h 23 min79.8°
July05:0912:1119:1314 h 04 min76.9°
August05:3112:0818:4513 h 14 min68.5°
September05:5211:5818:0412 h 12 min57.1°
October06:1411:4917:2511 h 11 min45.7°
November06:4211:5016:5910 h 18 min36.5°
December07:0512:0317:009 h 55 min33.0°

A year of daylight in Tosayamadachō-nakano

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 Tosayamadachō-nakano

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

30°collects the most energy over a year: 1333 kWh per kWp.

41°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 30°Best worst-month 41°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°118289%1.902.3×
15°129397%2.501.7×
30° year-round best1333100%2.951.5×
34° = latitude1330100%3.041.4×
41° off-grid best131499%3.171.3×
45°129797%3.221.3×
60°119089%3.291.5×
70°108381%3.231.6×
90°80260%2.842.3×

A fixed array in Tosayamadachō-nakano produces the most over a year at 30°. The design month for an off-grid system is December: at 41° it makes 3.17 kWh per kWp a day, 7% more than at 30°, and costs 1% of the yearly total. Why steep panels win winter.

Off-grid solar in Tosayamadachō-nakano at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 30° (year-round best).

012345January: 3.42 (70°)3.4JanFebruary: 3.39 (70°)3.4FebMarch: 3.46 (70°)3.5MarApril: 3.06 (70°)3.1AprMay: 2.57 (70°)2.6MayJune: 2.10 (70°)2.1JunJuly: 2.28 (70°)2.3JulAugust: 2.76 (70°)2.8AugSeptember: 2.86 (70°)2.9SepOctober: 3.22 (70°)3.2OctNovember: 3.26 (70°)3.3NovDecember: 3.23 (70°)3.2Dec30°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 30°Mean temp.
January2.593.843.423.224.4 °C
February3.203.833.393.535.6 °C
March4.163.963.464.108.5 °C
April4.963.583.064.2913.2 °C
May5.243.082.574.1117.7 °C
June4.582.582.103.4321.2 °C
July5.022.822.283.7424.9 °C
August5.213.402.764.1225.8 °C
September4.123.472.863.6322.8 °C
October3.463.823.223.5217.6 °C
November2.703.783.263.1612.2 °C
December2.323.663.232.956.7 °C
Year3.97 avg3.49 avg1083 kWh1333 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 560 Wp of panels at 70°, versus 400 Wp at 30°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Tosayamadachō-nakano

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 30°

Row spacing calculator

How Tosayamadachō-nakano compares in Japan

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

89thof 1,216 places in Japan for sunshine, shared: 3.97 peak sun hours a day on flat ground.

+4%solar energy a year compared with the average place in Japan: 1,333 against 1,284 kWh per kWp.

−12 mindaylight on the longest day, compared with Tokyo: 14 h 23 min against 14 h 35 min.

30°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); Tosayamadachō-nakano ranks joint 89th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.10 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 55 min, +11 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Tosayamadachō-nakano, 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 Tosayamadachō-nakano

What is the best solar panel angle in Tosayamadachō-nakano?
For a fixed array facing south, the best year-round tilt in Tosayamadachō-nakano is 30°, worth about 1333 kWh per kWp a year. An off-grid system that has to get through December does better at about 41°.
What time is sunrise and sunset in Tosayamadachō-nakano today?
On 25 October 2026 the sun rises at 06:17 and sets at 17:20 local time (UTC+9), giving 11 h 03 min of daylight. Solar noon is at 11:49.
How many peak sun hours does Tosayamadachō-nakano get?
On a flat surface 4.0 hours a day averaged over the year, from 2.3 in December to 5.2 in May. Panels tilted at 70° receive 2.6 sun hours a day in June.
How high does the sun get in Tosayamadachō-nakano?
At solar noon the sun stands 79.8° above the horizon on the June solstice and 33.0° on the December solstice.
Is Tosayamadachō-nakano a good place for solar panels?
With 4.0 peak sun hours a day on flat ground, Tosayamadachō-nakano ranks joint 89th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (30°) makes about 1,333 kWh a year here, 4% more than the average place in Japan.

Places near Tosayamadachō-nakano

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.