Solarposition.org

Fukushima · Japan · 37.85° N · 140.60° E

Solar position in Yanagawamachi-saiwaichō

Sun position, daylight and the best solar panel angle for Yanagawamachi-saiwaichō — computed for 37.85° N, 140.60° E, 44 m above sea level.

Sunrise today05:55105° ESE
Sunset today16:47255° WSW
Best panel angle34°year-round, facing south
Off-grid angle52°best for the darkest month

The sun right now

Azimuth180.0°
Elevation40.1°
At solar noon, 11:21Open on the sun map

Sun in Yanagawamachi-saiwaichō today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn04:27sun 18° below horizon
Nautical dawn04:5712° below
Civil dawn05:286° below
Sunrise05:55105° ESE
Golden hour ends06:31sun 6° up
Solar noon11:2140.1° high
Golden hour starts16:11sun 6° up
Sunset16:47255° WSW
Civil dusk17:146° below
Nautical dusk17:4512° below
Astronomical dusk18:1518° below
Day length10 h 52 min

Sun path diagram for Yanagawamachi-saiwaichō

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 75.6° at solar noon in Yanagawamachi-saiwaichō; on the December solstice only 28.7°. Sunrise swings from 59° ENE in June to 120° ESE in December — a 61° 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
January06:4911:4816:489 h 59 min32.3°
February06:2011:5117:2211 h 02 min41.6°
March05:4011:4517:4912 h 09 min52.4°
April04:5411:3618:1813 h 24 min64.0°
May04:2311:3418:4514 h 22 min72.3°
June04:1511:3919:0314 h 47 min75.6°
July04:3111:4318:5614 h 24 min72.6°
August04:5711:4018:2313 h 26 min64.3°
September05:2411:3017:3612 h 13 min52.9°
October05:5111:2216:5211 h 01 min41.5°
November06:2311:2316:229 h 59 min32.3°
December06:4911:3516:219 h 32 min28.7°

A year of daylight in Yanagawamachi-saiwaichō

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 Yanagawamachi-saiwaichō

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

34°collects the most energy over a year: 1248 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 34°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°107886%1.482.9×
15°119496%2.042.1×
30°1246100%2.471.7×
34° year-round best1248100%2.561.6×
38° = latitude1246100%2.641.6×
45°123099%2.751.5×
52° off-grid best119996%2.821.4×
60°114792%2.851.4×
70°105885%2.831.5×
90°81665%2.542.2×

A fixed array in Yanagawamachi-saiwaichō produces the most over a year at 34°. The design month for an off-grid system is December: at 52° it makes 2.82 kWh per kWp a day, 10% more than at 34°, and costs 4% of the yearly total. Why steep panels win winter.

Off-grid solar in Yanagawamachi-saiwaichō at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 34° (year-round best).

012345January: 3.32 (70°)3.3JanFebruary: 3.41 (70°)3.4FebMarch: 3.38 (70°)3.4MarApril: 3.17 (70°)3.2AprMay: 2.77 (70°)2.8MayJune: 2.41 (70°)2.4JunJuly: 2.21 (70°)2.2JulAugust: 2.62 (70°)2.6AugSeptember: 2.76 (70°)2.8SepOctober: 2.93 (70°)2.9OctNovember: 3.03 (70°)3.0NovDecember: 2.83 (70°)2.8Dec34°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 34°Mean temp.
January snow2.073.653.322.91-2.0 °C
February snow2.803.763.413.37-1.7 °C
March3.743.783.383.881.8 °C
April4.663.633.174.187.5 °C
May5.133.272.774.1113.4 °C
June4.902.902.413.7117.8 °C
July4.372.712.213.3021.7 °C
August4.503.202.623.6322.9 °C
September3.703.312.763.3618.9 °C
October2.943.412.933.1412.6 °C
November2.253.453.032.896.6 °C
December1.813.142.832.561.0 °C
Year3.57 avg3.35 avg1058 kWh1248 kWh

Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 530 Wp of panels at 70°, versus 460 Wp at 34°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Yanagawamachi-saiwaichō

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.

4.6 mrow pitch at 70°

4.0 mrow pitch at 34°

Row spacing calculator

How Yanagawamachi-saiwaichō compares in Japan

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

1007thof 1,216 places in Japan for sunshine, shared: 3.58 peak sun hours a day on flat ground.

−3%solar energy a year compared with the average place in Japan: 1,248 against 1,284 kWh per kWp.

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

34°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); Yanagawamachi-saiwaichō ranks joint 1007th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 2.21 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 32 min, −12 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Yanagawamachi-saiwaichō, 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 Yanagawamachi-saiwaichō

What is the best solar panel angle in Yanagawamachi-saiwaichō?
For a fixed array facing south, the best year-round tilt in Yanagawamachi-saiwaichō is 34°, worth about 1248 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 Yanagawamachi-saiwaichō today?
On 25 October 2026 the sun rises at 05:55 and sets at 16:47 local time (UTC+9), giving 10 h 52 min of daylight. Solar noon is at 11:21.
How many peak sun hours does Yanagawamachi-saiwaichō get?
On a flat surface 3.6 hours a day averaged over the year, from 1.8 in December to 5.1 in May. Panels tilted at 70° receive 2.7 sun hours a day in July.
How high does the sun get in Yanagawamachi-saiwaichō?
At solar noon the sun stands 75.6° above the horizon on the June solstice and 28.7° on the December solstice.
Is Yanagawamachi-saiwaichō a good place for solar panels?
With 3.6 peak sun hours a day on flat ground, Yanagawamachi-saiwaichō ranks joint 1007th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (34°) makes about 1,248 kWh a year here, 3% less than the average place in Japan.

Places near Yanagawamachi-saiwaichō

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.