Toyama · Japan · 36.90° N · 137.45° E
Solar position in Kurobe-shi
Sun position, daylight and the best solar panel angle for Kurobe-shi — computed for 36.90° N, 137.45° E, 15 m above sea level.
The sun right now
Sun in Kurobe-shi today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:39 | sun 18° below horizon |
| Nautical dawn | 05:09 | 12° below |
| Civil dawn | 05:40 | 6° below |
| Sunrise | 06:06 | 104° ESE |
| Golden hour ends | 06:42 | sun 6° up |
| Solar noon | 11:34 | 41.1° high |
| Golden hour starts | 16:25 | sun 6° up |
| Sunset | 17:01 | 255° WSW |
| Civil dusk | 17:27 | 6° below |
| Nautical dusk | 17:58 | 12° below |
| Astronomical dusk | 18:28 | 18° below |
| Day length | 10 h 55 min | |
Sun path diagram for Kurobe-shi
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 76.5° at solar noon in Kurobe-shi; on the December solstice only 29.7°. Sunrise swings from 59° ENE in June to 119° ESE in December — a 60° 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 | 07:00 | 12:01 | 17:03 | 10 h 03 min | 33.2° |
| February | 06:32 | 12:04 | 17:36 | 11 h 04 min | 42.5° |
| March | 05:53 | 11:57 | 18:02 | 12 h 09 min | 53.3° |
| April | 05:08 | 11:49 | 18:29 | 13 h 21 min | 64.9° |
| May | 04:38 | 11:46 | 18:55 | 14 h 17 min | 73.3° |
| June | 04:31 | 11:51 | 19:12 | 14 h 42 min | 76.5° |
| July | 04:46 | 11:56 | 19:06 | 14 h 20 min | 73.6° |
| August | 05:11 | 11:53 | 18:34 | 13 h 23 min | 65.2° |
| September | 05:36 | 11:43 | 17:49 | 12 h 13 min | 53.8° |
| October | 06:02 | 11:34 | 17:06 | 11 h 03 min | 42.5° |
| November | 06:34 | 11:35 | 16:37 | 10 h 03 min | 33.2° |
| December | 06:59 | 11:48 | 16:36 | 9 h 38 min | 29.7° |
A year of daylight in Kurobe-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.
Best solar panel angle in Kurobe-shi
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
29°collects the most energy over a year: 1192 kWh per kWp.
57°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° | 1073 | 90% | 1.23 | 3.6× |
| 15° | 1164 | 98% | 1.56 | 2.9× |
| 29° year-round best | 1192 | 100% | 1.80 | 2.4× |
| 30° | 1192 | 100% | 1.81 | 2.4× |
| 37° = latitude | 1183 | 99% | 1.89 | 2.2× |
| 45° | 1156 | 97% | 1.96 | 2.0× |
| 57° off-grid best | 1081 | 91% | 1.99 | 1.8× |
| 60° | 1057 | 89% | 1.99 | 1.7× |
| 70° | 960 | 81% | 1.95 | 1.6× |
| 90° | 711 | 60% | 1.72 | 1.7× |
A fixed array in Kurobe-shi produces the most over a year at 29°. The design month for an off-grid system is December: at 57° it makes 1.99 kWh per kWp a day, 11% more than at 29°, and costs 9% of the yearly total. Why steep panels win winter.
Off-grid solar in Kurobe-shi at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 29° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 29° | Mean temp. |
|---|---|---|---|---|---|
| January | 1.71 | 2.33 | 2.08 | 1.99 | 1.1 °C |
| February | 2.49 | 2.93 | 2.62 | 2.71 | 1.3 °C |
| March | 3.57 | 3.48 | 3.08 | 3.57 | 4.0 °C |
| April | 4.63 | 3.55 | 3.08 | 4.15 | 8.9 °C |
| May | 5.28 | 3.30 | 2.79 | 4.30 | 14.2 °C |
| June | 5.03 | 2.92 | 2.42 | 3.89 | 18.6 °C |
| July | 4.68 | 2.83 | 2.31 | 3.61 | 22.5 °C |
| August | 4.90 | 3.42 | 2.79 | 3.99 | 24.2 °C |
| September | 3.88 | 3.43 | 2.85 | 3.50 | 20.8 °C |
| October | 3.10 | 3.55 | 3.02 | 3.21 | 15.3 °C |
| November | 2.12 | 2.99 | 2.59 | 2.47 | 9.7 °C |
| December | 1.51 | 2.21 | 1.95 | 1.80 | 4.2 °C |
| Year | 3.58 avg | 3.08 avg | 960 kWh | 1192 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 610 Wp of panels at 70°, versus 660 Wp at 29°. The steep array is 8% smaller for the same winter. Size your own system.
Row spacing in Kurobe-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.
4.5 mrow pitch at 70°
3.7 mrow pitch at 29°
How Kurobe-shi compares in Japan
Against the other 1,215 places in Japan with climate data, for a fixed array at its best angle.
1007thof 1,216 places in Japan for sunshine, shared: 3.58 peak sun hours a day on flat ground.
−7%solar energy a year compared with the average place in Japan: 1,192 against 1,284 kWh per kWp.
+7 mindaylight on the longest day, compared with Tokyo: 14 h 42 min against 14 h 35 min.
29°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); Kurobe-shi ranks joint 1007th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.95 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 38 min, −7 min compared with Tokyo.
Solar forecast for Kurobe-shi, 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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A free, live card for Kurobe-shi: 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.