Solarposition.org

Yamaguchi · Japan · 34.40° N · 131.42° E

Solar position in Hagi

Sun position, daylight and the best solar panel angle for Hagi — computed for 34.40° N, 131.42° E, 31 m above sea level.

Sunrise today06:27104° ESE
Sunset today17:28256° WSW
Best panel angle27°year-round, facing south
Off-grid angle54°best for the darkest month

The sun right now

Azimuth180.0°
Elevation43.5°
At solar noon, 11:58Open on the sun map

Sun in Hagi today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn05:03sun 18° below horizon
Nautical dawn05:3212° below
Civil dawn06:026° below
Sunrise06:27104° ESE
Golden hour ends07:02sun 6° up
Solar noon11:5843.5° high
Golden hour starts16:54sun 6° up
Sunset17:28256° WSW
Civil dusk17:546° below
Nautical dusk18:2312° below
Astronomical dusk18:5218° below
Day length11 h 01 min

Sun path diagram for Hagi

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 79.0° at solar noon in Hagi; on the December solstice only 32.2°. Sunrise swings from 61° ENE in June to 118° ESE in December — a 58° 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
January07:1812:2517:3210 h 14 min35.7°
February06:5312:2818:0211 h 09 min45.0°
March06:1712:2118:2612 h 09 min55.8°
April05:3612:1318:5013 h 14 min67.4°
May05:0812:1019:1314 h 05 min75.8°
June05:0212:1619:2914 h 27 min79.0°
July05:1612:2019:2414 h 07 min76.1°
August05:3912:1718:5513 h 16 min67.7°
September06:0112:0718:1312 h 12 min56.3°
October06:2411:5817:3311 h 09 min44.9°
November06:5211:5917:0710 h 14 min35.7°
December07:1612:1217:079 h 51 min32.2°

A year of daylight in Hagi

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 Hagi

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

27°collects the most energy over a year: 1216 kWh per kWp.

54°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 27°Best worst-month 54°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°110891%1.473.0×
15°119398%1.832.4×
27° year-round best1216100%2.062.1×
30°1215100%2.102.0×
34° = latitude120999%2.151.9×
45°117196%2.251.7×
54° off-grid best111492%2.271.6×
60°106488%2.261.5×
70°96379%2.201.4×
90°70558%1.921.8×

A fixed array in Hagi produces the most over a year at 27°. The design month for an off-grid system is December: at 54° it makes 2.27 kWh per kWp a day, 11% more than at 27°, and costs 8% of the yearly total. Why steep panels win winter.

Off-grid solar in Hagi at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 27° (year-round best).

012345January: 2.22 (70°)2.2JanFebruary: 2.67 (70°)2.7FebMarch: 3.08 (70°)3.1MarApril: 3.01 (70°)3.0AprMay: 2.65 (70°)2.6MayJune: 2.21 (70°)2.2JunJuly: 2.23 (70°)2.2JulAugust: 2.73 (70°)2.7AugSeptember: 2.80 (70°)2.8SepOctober: 3.12 (70°)3.1OctNovember: 2.74 (70°)2.7NovDecember: 2.20 (70°)2.2Dec27°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 27°Mean temp.
January1.942.532.222.146.4 °C
February2.723.052.672.817.1 °C
March3.803.553.083.659.4 °C
April4.803.533.014.1813.4 °C
May5.303.172.654.2417.6 °C
June4.732.702.213.6221.3 °C
July4.762.762.233.6225.1 °C
August5.063.382.734.0526.6 °C
September4.033.412.803.5323.5 °C
October3.423.723.123.3918.8 °C
November2.433.212.742.6613.9 °C
December1.812.532.202.068.7 °C
Year3.74 avg3.13 avg963 kWh1216 kWh

Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 540 Wp of panels at 70°, versus 570 Wp at 27°. The steep array is 7% smaller for the same winter. Size your own system.

Row spacing in Hagi

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.

4.1 mrow pitch at 70°

3.4 mrow pitch at 27°

Row spacing calculator

How Hagi compares in Japan

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

904thof 1,216 places in Japan for sunshine, shared: 3.74 peak sun hours a day on flat ground.

−5%solar energy a year compared with the average place in Japan: 1,216 against 1,284 kWh per kWp.

−7 mindaylight on the longest day, compared with Tokyo: 14 h 27 min against 14 h 35 min.

27°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); Hagi ranks joint 904th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.20 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 51 min, +7 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Hagi, 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 Hagi

What is the best solar panel angle in Hagi?
For a fixed array facing south, the best year-round tilt in Hagi is 27°, worth about 1216 kWh per kWp a year. An off-grid system that has to get through December does better at about 54°.
What time is sunrise and sunset in Hagi today?
On 25 October 2026 the sun rises at 06:27 and sets at 17:28 local time (UTC+9), giving 11 h 01 min of daylight. Solar noon is at 11:58.
How many peak sun hours does Hagi get?
On a flat surface 3.7 hours a day averaged over the year, from 1.8 in December to 5.3 in May. Panels tilted at 70° receive 2.5 sun hours a day in December.
How high does the sun get in Hagi?
At solar noon the sun stands 79.0° above the horizon on the June solstice and 32.2° on the December solstice.
Is Hagi a good place for solar panels?
With 3.7 peak sun hours a day on flat ground, Hagi ranks joint 904th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (27°) makes about 1,216 kWh a year here, 5% less than the average place in Japan.

Places near Hagi

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.