Miyagi · Japan · 38.17° N · 140.88° E
Solar position in Natori-shi
Sun position, daylight and the best solar panel angle for Natori-shi — computed for 38.17° N, 140.88° E, 9 m above sea level.
The sun right now
Sun in Natori-shi today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:26 | sun 18° below horizon |
| Nautical dawn | 04:56 | 12° below |
| Civil dawn | 05:27 | 6° below |
| Sunrise | 05:54 | 105° ESE |
| Golden hour ends | 06:31 | sun 6° up |
| Solar noon | 11:20 | 39.8° high |
| Golden hour starts | 16:09 | sun 6° up |
| Sunset | 16:46 | 255° WSW |
| Civil dusk | 17:12 | 6° below |
| Nautical dusk | 17:43 | 12° below |
| Astronomical dusk | 18:14 | 18° below |
| Day length | 10 h 51 min | |
Sun path diagram for Natori-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 75.3° at solar noon in Natori-shi; on the December solstice only 28.4°. 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 | 06:49 | 11:47 | 16:46 | 9 h 57 min | 31.9° |
| February | 06:19 | 11:50 | 17:20 | 11 h 01 min | 41.3° |
| March | 05:39 | 11:43 | 17:48 | 12 h 10 min | 52.0° |
| April | 04:53 | 11:35 | 18:17 | 13 h 24 min | 63.7° |
| May | 04:21 | 11:33 | 18:45 | 14 h 24 min | 72.0° |
| June | 04:13 | 11:38 | 19:02 | 14 h 49 min | 75.3° |
| July | 04:29 | 11:42 | 18:55 | 14 h 26 min | 72.3° |
| August | 04:56 | 11:39 | 18:22 | 13 h 27 min | 64.0° |
| September | 05:22 | 11:29 | 17:35 | 12 h 13 min | 52.6° |
| October | 05:50 | 11:20 | 16:51 | 11 h 01 min | 41.2° |
| November | 06:23 | 11:22 | 16:20 | 9 h 57 min | 32.0° |
| December | 06:49 | 11:34 | 16:19 | 9 h 31 min | 28.4° |
A year of daylight in Natori-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 Natori-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: 1238 kWh per kWp.
56°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° | 1070 | 86% | 1.43 | 3.0× |
| 15° | 1185 | 96% | 1.96 | 2.2× |
| 30° | 1235 | 100% | 2.38 | 1.8× |
| 34° year-round best | 1238 | 100% | 2.46 | 1.7× |
| 38° = latitude | 1235 | 100% | 2.54 | 1.6× |
| 45° | 1219 | 98% | 2.64 | 1.5× |
| 56° off-grid best | 1164 | 94% | 2.74 | 1.4× |
| 60° | 1136 | 92% | 2.75 | 1.4× |
| 70° | 1046 | 85% | 2.72 | 1.5× |
| 90° | 803 | 65% | 2.45 | 2.1× |
A fixed array in Natori-shi produces the most over a year at 34°. The design month for an off-grid system is December: at 56° it makes 2.74 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 Natori-shi at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 34° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 34° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.02 | 3.41 | 3.08 | 2.78 | -0.3 °C |
| February snow | 2.77 | 3.73 | 3.36 | 3.32 | -0.2 °C |
| March | 3.71 | 3.76 | 3.35 | 3.83 | 3.0 °C |
| April | 4.65 | 3.64 | 3.17 | 4.17 | 8.1 °C |
| May | 5.08 | 3.26 | 2.77 | 4.08 | 13.6 °C |
| June | 4.94 | 2.93 | 2.43 | 3.74 | 17.9 °C |
| July | 4.39 | 2.74 | 2.24 | 3.33 | 21.7 °C |
| August | 4.48 | 3.20 | 2.61 | 3.61 | 23.2 °C |
| September | 3.71 | 3.34 | 2.78 | 3.38 | 19.7 °C |
| October | 2.94 | 3.44 | 2.94 | 3.14 | 13.9 °C |
| November | 2.22 | 3.42 | 2.99 | 2.85 | 8.1 °C |
| December | 1.75 | 3.05 | 2.72 | 2.46 | 2.7 °C |
| Year | 3.56 avg | 3.32 avg | 1046 kWh | 1238 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 Natori-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°
How Natori-shi compares in Japan
Against the other 1,215 places in Japan with climate data, for a fixed array at its best angle.
1051stof 1,216 places in Japan for sunshine, shared: 3.56 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Japan: 1,238 against 1,284 kWh per kWp.
+15 mindaylight on the longest day, compared with Tokyo: 14 h 49 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); Natori-shi ranks joint 1051st. 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 31 min, −14 min compared with Tokyo.
Solar forecast for Natori-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 Natori-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.