Solarposition.org

Miyagi · Japan · 38.30° N · 141.00° E

Solar position in Tagajō-shi

Sun position, daylight and the best solar panel angle for Tagajō-shi — computed for 38.30° N, 141.00° E, 22 m above sea level.

Sunrise today05:54105° ESE
Sunset today16:45255° WSW
Best panel angle34°year-round, facing south
Off-grid angle56°best for the darkest month

The sun right now

Azimuth180.0°
Elevation39.7°
At solar noon, 11:19Open on the sun map

Sun in Tagajō-shi today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn04:25sun 18° below horizon
Nautical dawn04:5612° below
Civil dawn05:276° below
Sunrise05:54105° ESE
Golden hour ends06:30sun 6° up
Solar noon11:1939.7° high
Golden hour starts16:08sun 6° up
Sunset16:45255° WSW
Civil dusk17:126° below
Nautical dusk17:4312° below
Astronomical dusk18:1318° below
Day length10 h 51 min

Sun path diagram for Tagajō-shi

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 75.1° at solar noon in Tagajō-shi; on the December solstice only 28.3°. 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
January06:4911:4716:459 h 56 min31.8°
February06:1911:4917:2011 h 01 min41.1°
March05:3811:4317:4812 h 10 min51.9°
April04:5211:3418:1713 h 25 min63.5°
May04:2011:3218:4414 h 24 min71.9°
June04:1211:3719:0214 h 50 min75.1°
July04:2811:4218:5514 h 27 min72.2°
August04:5511:3918:2213 h 27 min63.8°
September05:2211:2917:3512 h 13 min52.5°
October05:5011:2016:5011 h 00 min41.1°
November06:2311:2116:199 h 57 min31.8°
December06:4811:3316:189 h 30 min28.3°

A year of daylight in Tagajō-shi

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 Tagajō-shi

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: 1237 kWh per kWp.

56°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 34°Best worst-month 56°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°106786%1.413.0×
15°118396%1.952.2×
30°1234100%2.361.8×
34° year-round best1237100%2.451.7×
38° = latitude1234100%2.531.6×
45°121898%2.631.5×
56° off-grid best116494%2.721.4×
60°113592%2.741.4×
70°104785%2.711.5×
90°80465%2.442.1×

A fixed array in Tagajō-shi produces the most over a year at 34°. The design month for an off-grid system is December: at 56° it makes 2.72 kWh per kWp a day, 11% more than at 34°, and costs 6% of the yearly total. Why steep panels win winter.

Off-grid solar in Tagajō-shi at 70°

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

012345January: 3.08 (70°)3.1JanFebruary: 3.36 (70°)3.4FebMarch: 3.34 (70°)3.3MarApril: 3.17 (70°)3.2AprMay: 2.76 (70°)2.8MayJune: 2.44 (70°)2.4JunJuly: 2.24 (70°)2.2JulAugust: 2.61 (70°)2.6AugSeptember: 2.79 (70°)2.8SepOctober: 2.95 (70°)3.0OctNovember: 2.99 (70°)3.0NovDecember: 2.71 (70°)2.7Dec34°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 34°Mean temp.
January snow2.013.413.082.770.2 °C
February snow2.763.733.363.310.3 °C
March3.703.763.343.833.3 °C
April4.653.653.174.178.3 °C
May5.073.262.764.0713.6 °C
June4.952.942.443.7517.9 °C
July4.402.742.243.3421.6 °C
August4.463.192.613.6023.2 °C
September3.713.352.793.3819.9 °C
October2.943.462.953.1514.3 °C
November2.213.422.992.848.6 °C
December1.743.042.712.453.1 °C
Year3.55 avg3.33 avg1047 kWh1237 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 480 Wp at 34°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Tagajō-shi

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.

4.7 mrow pitch at 70°

4.0 mrow pitch at 34°

Row spacing calculator

How Tagajō-shi compares in Japan

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

1057thof 1,216 places in Japan for sunshine, shared: 3.55 peak sun hours a day on flat ground.

−4%solar energy a year compared with the average place in Japan: 1,236 against 1,284 kWh per kWp.

+15 mindaylight on the longest day, compared with Tokyo: 14 h 50 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); Tagajō-shi ranks joint 1057th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 2.24 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 30 min, −15 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Tagajō-shi, 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 Tagajō-shi

What is the best solar panel angle in Tagajō-shi?
For a fixed array facing south, the best year-round tilt in Tagajō-shi is 34°, worth about 1237 kWh per kWp a year. An off-grid system that has to get through December does better at about 56°.
What time is sunrise and sunset in Tagajō-shi today?
On 25 October 2026 the sun rises at 05:54 and sets at 16:45 local time (UTC+9), giving 10 h 51 min of daylight. Solar noon is at 11:19.
How many peak sun hours does Tagajō-shi get?
On a flat surface 3.6 hours a day averaged over the year, from 1.7 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 Tagajō-shi?
At solar noon the sun stands 75.1° above the horizon on the June solstice and 28.3° on the December solstice.
Is Tagajō-shi a good place for solar panels?
With 3.6 peak sun hours a day on flat ground, Tagajō-shi ranks joint 1057th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (34°) makes about 1,236 kWh a year here, 4% less than the average place in Japan.

Places near Tagajō-shi

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.