Japan · 36.38° N · 139.73° E
Solar position in Tochigi
Sun position, daylight and the best solar panel angle for Tochigi — computed for 36.38° N, 139.73° E, 51 m above sea level.
The sun right now
Sun in Tochigi today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:30 | sun 18° below horizon |
| Nautical dawn | 05:00 | 12° below |
| Civil dawn | 05:30 | 6° below |
| Sunrise | 05:56 | 104° ESE |
| Golden hour ends | 06:32 | sun 6° up |
| Solar noon | 11:24 | 41.6° high |
| Golden hour starts | 16:17 | sun 6° up |
| Sunset | 16:52 | 255° WSW |
| Civil dusk | 17:19 | 6° below |
| Nautical dusk | 17:49 | 12° below |
| Astronomical dusk | 18:19 | 18° below |
| Day length | 10 h 56 min | |
Sun path diagram for Tochigi
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 77.1° at solar noon in Tochigi; on the December solstice only 30.2°. Sunrise swings from 60° ENE in June to 119° ESE in December — a 59° 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 | 06:49 | 11:52 | 16:55 | 10 h 05 min | 33.7° |
| February | 06:22 | 11:54 | 17:27 | 11 h 05 min | 43.0° |
| March | 05:43 | 11:48 | 17:53 | 12 h 09 min | 53.8° |
| April | 05:00 | 11:39 | 18:19 | 13 h 19 min | 65.5° |
| May | 04:30 | 11:37 | 18:45 | 14 h 15 min | 73.8° |
| June | 04:23 | 11:42 | 19:02 | 14 h 39 min | 77.1° |
| July | 04:38 | 11:47 | 18:55 | 14 h 17 min | 74.1° |
| August | 05:03 | 11:44 | 18:24 | 13 h 21 min | 65.8° |
| September | 05:27 | 11:34 | 17:40 | 12 h 12 min | 54.4° |
| October | 05:53 | 11:25 | 16:57 | 11 h 05 min | 43.0° |
| November | 06:23 | 11:26 | 16:29 | 10 h 06 min | 33.8° |
| December | 06:48 | 11:38 | 16:29 | 9 h 41 min | 30.2° |
A year of daylight in Tochigi
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 Tochigi
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
36°collects the most energy over a year: 1357 kWh per kWp.
39°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 | October kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1147 | 85% | 2.50 | 2.2× |
| 15° | 1285 | 95% | 2.94 | 1.6× |
| 30° | 1351 | 100% | 3.20 | 1.3× |
| 36° year-round best = latitude | 1357 | 100% | 3.26 | 1.3× |
| 39° off-grid best | 1355 | 100% | 3.28 | 1.3× |
| 45° | 1342 | 99% | 3.28 | 1.4× |
| 60° | 1258 | 93% | 3.17 | 1.6× |
| 70° | 1164 | 86% | 3.00 | 1.9× |
| 90° | 900 | 66% | 2.42 | 2.8× |
A fixed array in Tochigi produces the most over a year at 36°. The design month for an off-grid system is October: at 39° it makes 3.28 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Tochigi at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 36° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 36° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.64 | 4.76 | 4.31 | 3.91 | -0.5 °C |
| February snow | 3.31 | 4.61 | 4.17 | 4.13 | 0.4 °C |
| March | 4.12 | 4.17 | 3.70 | 4.28 | 4.0 °C |
| April | 4.82 | 3.66 | 3.17 | 4.23 | 9.7 °C |
| May | 5.16 | 3.20 | 2.70 | 4.02 | 15.3 °C |
| June | 4.67 | 2.73 | 2.25 | 3.44 | 19.4 °C |
| July | 4.55 | 2.76 | 2.24 | 3.35 | 23.4 °C |
| August | 4.72 | 3.27 | 2.67 | 3.72 | 24.3 °C |
| September | 3.78 | 3.30 | 2.74 | 3.37 | 20.3 °C |
| October | 3.07 | 3.51 | 3.00 | 3.26 | 14.2 °C |
| November | 2.59 | 4.01 | 3.51 | 3.39 | 8.1 °C |
| December | 2.32 | 4.30 | 3.86 | 3.51 | 2.4 °C |
| Year | 3.82 avg | 3.69 avg | 1164 kWh | 1357 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 360 Wp at 36°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Tochigi
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.
4.4 mrow pitch at 70°
3.9 mrow pitch at 36°
How Tochigi compares in Japan
Against the other 1,215 places in Japan with climate data, for a fixed array at its best angle.
664thof 1,216 places in Japan for sunshine, shared: 3.82 peak sun hours a day on flat ground.
+6%solar energy a year compared with the average place in Japan: 1,357 against 1,284 kWh per kWp.
+4 mindaylight on the longest day, compared with Tokyo: 14 h 39 min against 14 h 35 min.
36°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); Tochigi ranks joint 664th. 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 41 min, −4 min compared with Tokyo.
Solar forecast for Tochigi, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Tochigi
What is the best solar panel angle in Tochigi?
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Places near Tochigi
Put this on your site
A free, live card for Tochigi: 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.