Solarposition.org

Iwate · Japan · 39.28° N · 141.87° E

Solar position in Kamaishi

Sun position, daylight and the best solar panel angle for Kamaishi — computed for 39.28° N, 141.87° E, 25 m above sea level.

Sunrise today05:52105° ESE
Sunset today16:40255° WSW
Best panel angle35°year-round, facing south
Off-grid angle56°best for the darkest month

The sun right now

Azimuth180.0°
Elevation38.7°
At solar noon, 11:16Open on the sun map

Sun in Kamaishi today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn04:22sun 18° below horizon
Nautical dawn04:5312° below
Civil dawn05:246° below
Sunrise05:52105° ESE
Golden hour ends06:29sun 6° up
Solar noon11:1638.7° high
Golden hour starts16:03sun 6° up
Sunset16:40255° WSW
Civil dusk17:076° below
Nautical dusk17:3912° below
Astronomical dusk18:1018° below
Day length10 h 48 min

Sun path diagram for Kamaishi

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 74.2° at solar noon in Kamaishi; on the December solstice only 27.3°. Sunrise swings from 58° ENE in June to 120° ESE in December — a 62° 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
January06:4811:4316:399 h 52 min30.8°
February06:1711:4617:1510 h 58 min40.1°
March05:3511:3917:4412 h 10 min50.9°
April04:4711:3118:1513 h 28 min62.6°
May04:1411:2918:4414 h 29 min70.9°
June04:0611:3419:0214 h 56 min74.2°
July04:2211:3818:5414 h 32 min71.2°
August04:5011:3518:2013 h 30 min62.9°
September05:1811:2517:3212 h 13 min51.5°
October05:4711:1616:4510 h 58 min40.1°
November06:2211:1816:149 h 52 min30.9°
December06:4811:3016:129 h 24 min27.3°

A year of daylight in Kamaishi

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 Kamaishi

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: 1270 kWh per kWp.

56°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 56°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°108185%1.423.0×
15°120695%1.982.2×
30°1266100%2.431.8×
35° year-round best1270100%2.551.7×
39° = latitude1268100%2.631.6×
45°125599%2.731.5×
56° off-grid best120395%2.841.3×
60°117693%2.851.4×
70°108886%2.831.5×
90°84266%2.572.1×

A fixed array in Kamaishi produces the most over a year at 35°. The design month for an off-grid system is December: at 56° it makes 2.84 kWh per kWp a day, 11% more than at 35°, and costs 5% of the yearly total. Why steep panels win winter.

Off-grid solar in Kamaishi at 70°

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

012345January: 3.27 (70°)3.3JanFebruary: 3.54 (70°)3.5FebMarch: 3.49 (70°)3.5MarApril: 3.28 (70°)3.3AprMay: 2.82 (70°)2.8MayJune: 2.53 (70°)2.5JunJuly: 2.32 (70°)2.3JulAugust: 2.66 (70°)2.7AugSeptember: 2.89 (70°)2.9SepOctober: 3.09 (70°)3.1OctNovember: 3.10 (70°)3.1NovDecember: 2.83 (70°)2.8Dec35°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 35°Mean temp.
January snow2.053.623.272.930.4 °C
February snow2.823.923.543.470.2 °C
March3.783.923.493.963.1 °C
April4.703.753.284.267.5 °C
May5.073.312.824.1012.4 °C
June5.023.022.533.8316.7 °C
July4.452.822.323.4020.4 °C
August4.453.232.663.6222.2 °C
September3.773.472.893.4719.6 °C
October2.993.623.093.2714.3 °C
November2.213.543.102.928.8 °C
December1.753.182.832.553.4 °C
Year3.59 avg3.45 avg1088 kWh1270 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 510 Wp of panels at 70°, versus 460 Wp at 35°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Kamaishi

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.

4.9 mrow pitch at 70°

4.2 mrow pitch at 35°

Row spacing calculator

How Kamaishi compares in Japan

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

1000thof 1,216 places in Japan for sunshine, shared: 3.59 peak sun hours a day on flat ground.

−1%solar energy a year compared with the average place in Japan: 1,270 against 1,284 kWh per kWp.

+22 mindaylight on the longest day, compared with Tokyo: 14 h 56 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); Kamaishi ranks joint 1000th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 2.32 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 24 min, −20 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Kamaishi, 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 Kamaishi

What is the best solar panel angle in Kamaishi?
For a fixed array facing south, the best year-round tilt in Kamaishi is 35°, worth about 1270 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 Kamaishi today?
On 25 October 2026 the sun rises at 05:52 and sets at 16:40 local time (UTC+9), giving 10 h 48 min of daylight. Solar noon is at 11:16.
How many peak sun hours does Kamaishi 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 2.8 sun hours a day in July.
How high does the sun get in Kamaishi?
At solar noon the sun stands 74.2° above the horizon on the June solstice and 27.3° on the December solstice.
Is Kamaishi a good place for solar panels?
With 3.6 peak sun hours a day on flat ground, Kamaishi ranks joint 1000th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (35°) makes about 1,270 kWh a year here, 1% less than the average place in Japan.

Places near Kamaishi

All places in Japan

Put this on your site

A free, live card for Kamaishi: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.

Theme

Paste it into any page, blog or CMS that accepts HTML. Auto follows the visitor's light or dark system setting. Free to use with its link.

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.