Yamagata · Japan · 38.35° N · 140.37° E
Solar position in Tendō
Sun position, daylight and the best solar panel angle for Tendō — computed for 38.35° N, 140.37° E, 108 m above sea level.
The sun right now
Sun in Tendō today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:28 | sun 18° below horizon |
| Nautical dawn | 04:58 | 12° below |
| Civil dawn | 05:29 | 6° below |
| Sunrise | 05:56 | 105° ESE |
| Golden hour ends | 06:33 | sun 6° up |
| Solar noon | 11:22 | 39.6° high |
| Golden hour starts | 16:11 | sun 6° up |
| Sunset | 16:47 | 255° WSW |
| Civil dusk | 17:14 | 6° below |
| Nautical dusk | 17:45 | 12° below |
| Astronomical dusk | 18:16 | 18° below |
| Day length | 10 h 51 min | |
Sun path diagram for Tendō
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 75.1° at solar noon in Tendō; on the December solstice only 28.2°. 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.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 06:51 | 11:49 | 16:47 | 9 h 56 min | 31.8° |
| February | 06:22 | 11:52 | 17:22 | 11 h 01 min | 41.1° |
| March | 05:41 | 11:45 | 17:50 | 12 h 10 min | 51.9° |
| April | 04:55 | 11:37 | 18:20 | 13 h 25 min | 63.5° |
| May | 04:22 | 11:35 | 18:47 | 14 h 25 min | 71.8° |
| June | 04:15 | 11:40 | 19:05 | 14 h 51 min | 75.1° |
| July | 04:31 | 11:44 | 18:58 | 14 h 27 min | 72.1° |
| August | 04:57 | 11:41 | 18:24 | 13 h 27 min | 63.8° |
| September | 05:24 | 11:31 | 17:37 | 12 h 13 min | 52.4° |
| October | 05:52 | 11:22 | 16:53 | 11 h 00 min | 41.0° |
| November | 06:25 | 11:24 | 16:22 | 9 h 56 min | 31.8° |
| December | 06:51 | 11:36 | 16:21 | 9 h 30 min | 28.2° |
A year of daylight in Tendō
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Tendō
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
32°collects the most energy over a year: 1173 kWh per kWp.
60°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1035 | 88% | 1.25 | 3.4× |
| 15° | 1134 | 97% | 1.66 | 2.6× |
| 30° | 1173 | 100% | 1.97 | 2.1× |
| 32° year-round best | 1173 | 100% | 2.00 | 2.0× |
| 38° = latitude | 1168 | 100% | 2.09 | 1.9× |
| 45° | 1149 | 98% | 2.17 | 1.8× |
| 60° off-grid best | 1064 | 91% | 2.24 | 1.6× |
| 70° | 976 | 83% | 2.20 | 1.4× |
| 90° | 743 | 63% | 1.97 | 1.8× |
A fixed array in Tendō produces the most over a year at 32°. The design month for an off-grid system is December: at 60° it makes 2.24 kWh per kWp a day, 12% more than at 32°, and costs 9% of the yearly total. Why steep panels win winter.
Off-grid solar in Tendō at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 32° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 32° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.74 | 2.71 | 2.45 | 2.23 | -1.9 °C |
| February snow | 2.49 | 3.20 | 2.90 | 2.87 | -1.7 °C |
| March | 3.49 | 3.47 | 3.10 | 3.56 | 1.7 °C |
| April | 4.54 | 3.56 | 3.11 | 4.10 | 7.4 °C |
| May | 5.06 | 3.26 | 2.77 | 4.11 | 13.4 °C |
| June | 4.97 | 2.96 | 2.46 | 3.82 | 18.0 °C |
| July | 4.32 | 2.71 | 2.21 | 3.31 | 21.8 °C |
| August | 4.46 | 3.20 | 2.62 | 3.63 | 23.2 °C |
| September | 3.69 | 3.31 | 2.76 | 3.36 | 19.1 °C |
| October | 2.86 | 3.32 | 2.84 | 3.03 | 12.8 °C |
| November | 2.05 | 3.06 | 2.69 | 2.54 | 6.7 °C |
| December | 1.52 | 2.47 | 2.20 | 2.00 | 1.0 °C |
| Year | 3.44 avg | 3.10 avg | 976 kWh | 1173 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 590 Wp at 32°. The steep array is 9% smaller for the same winter. Size your own system.
Row spacing in Tendō
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 32°
How Tendō compares in Japan
Against the other 1,215 places in Japan with climate data, for a fixed array at its best angle.
1116thof 1,216 places in Japan for sunshine, shared: 3.44 peak sun hours a day on flat ground.
−9%solar energy a year compared with the average place in Japan: 1,173 against 1,284 kWh per kWp.
+16 mindaylight on the longest day, compared with Tokyo: 14 h 51 min against 14 h 35 min.
32°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); Tendō ranks joint 1116th. In its darkest month, December, 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 30 min, −15 min compared with Tokyo.
Solar forecast for Tendō, 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 Tendō
What is the best solar panel angle in Tendō?
What time is sunrise and sunset in Tendō today?
How many peak sun hours does Tendō get?
How high does the sun get in Tendō?
Is Tendō a good place for solar panels?
Places near Tendō
Put this on your site
A free, live card for Tendō: 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.
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.