East Java · Indonesia · 8.13° S · 113.22° E
Solar position in Lumajang
Sun position, daylight and the best solar panel angle for Lumajang — computed for 8.13° S, 113.22° E, 56 m above sea level.
The sun right now
Sun in Lumajang today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 03:49 | sun 18° below horizon |
| Nautical dawn | 04:14 | 12° below |
| Civil dawn | 04:39 | 6° below |
| Sunrise | 05:00 | 102° ESE |
| Golden hour ends | 05:29 | sun 6° up |
| Solar noon | 11:11 | 86.0° high |
| Golden hour starts | 16:53 | sun 6° up |
| Sunset | 17:21 | 258° WSW |
| Civil dusk | 17:43 | 6° below |
| Nautical dusk | 18:08 | 12° below |
| Astronomical dusk | 18:33 | 18° below |
| Day length | 12 h 21 min | |
Sun path diagram for Lumajang
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 58.4° at solar noon in Lumajang; on the December solstice only 74.7°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 47° 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 | 05:22 | 11:38 | 17:53 | 12 h 31 min | 78.2° |
| February | 05:31 | 11:40 | 17:50 | 12 h 19 min | 87.6° |
| March | 05:31 | 11:34 | 17:37 | 12 h 06 min | 81.6° |
| April | 05:29 | 11:25 | 17:22 | 11 h 53 min | 70.0° |
| May | 05:32 | 11:23 | 17:15 | 11 h 43 min | 61.7° |
| June | 05:39 | 11:28 | 17:18 | 11 h 39 min | 58.4° |
| July | 05:42 | 11:33 | 17:24 | 11 h 43 min | 61.4° |
| August | 05:34 | 11:30 | 17:26 | 11 h 53 min | 69.8° |
| September | 05:17 | 11:20 | 17:23 | 12 h 06 min | 81.2° |
| October | 05:02 | 11:11 | 17:21 | 12 h 19 min | 87.4° |
| November | 04:57 | 11:12 | 17:28 | 12 h 31 min | 78.2° |
| December | 05:07 | 11:25 | 17:43 | 12 h 36 min | 74.7° |
A year of daylight in Lumajang
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 Lumajang
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
11°collects the most energy over a year: 1639 kWh per kWp.
4°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° | 1615 | 99% | 4.14 | 1.3× |
| 4° off-grid best | 1629 | 99% | 4.07 | 1.3× |
| 8° = latitude | 1637 | 100% | 3.98 | 1.3× |
| 11° year-round best | 1639 | 100% | 3.90 | 1.3× |
| 15° | 1635 | 100% | 3.78 | 1.4× |
| 30° | 1562 | 95% | 3.22 | 1.6× |
| 45° | 1401 | 86% | 2.51 | 1.9× |
| 60° | 1166 | 71% | 1.73 | 2.6× |
| 70° | 983 | 60% | 1.30 | 3.2× |
| 90° | 657 | 40% | 1.13 | 3.1× |
A fixed array in Lumajang produces the most over a year at 11°. The design month for an off-grid system is December: at 4° it makes 4.07 kWh per kWp a day, 4% more than at 11°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Lumajang at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 11° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 11° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.38 | 1.72 | 1.35 | 4.03 | 26.7 °C |
| February | 5.50 | 2.17 | 1.73 | 4.23 | 26.7 °C |
| March | 5.55 | 2.94 | 2.37 | 4.40 | 26.9 °C |
| April | 5.48 | 3.93 | 3.19 | 4.52 | 27.1 °C |
| May | 5.17 | 4.65 | 3.79 | 4.43 | 26.7 °C |
| June | 4.95 | 4.96 | 4.06 | 4.34 | 25.9 °C |
| July | 5.16 | 4.99 | 4.09 | 4.50 | 25.2 °C |
| August | 5.82 | 4.71 | 3.86 | 4.94 | 25.2 °C |
| September | 6.37 | 3.76 | 3.06 | 5.18 | 26.1 °C |
| October | 6.41 | 2.55 | 2.04 | 4.96 | 27.2 °C |
| November | 5.91 | 1.79 | 1.40 | 4.43 | 27.6 °C |
| December | 5.24 | 1.65 | 1.30 | 3.90 | 27.0 °C |
| Year | 5.58 avg | 3.32 avg | 983 kWh | 1639 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 910 Wp of panels at 70°, versus 300 Wp at 11°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Lumajang
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.
2.0 mrow pitch at 70°
2.2 mrow pitch at 11°
How Lumajang compares in Indonesia
Against the other 446 places in Indonesia with climate data, for a fixed array at its best angle.
34thof 447 places in Indonesia for sunshine, shared: 5.58 peak sun hours a day on flat ground.
+9%solar energy a year compared with the average place in Indonesia: 1,638 against 1,498 kWh per kWp.
+7 mindaylight on the longest day, compared with Jakarta: 12 h 36 min against 12 h 29 min.
11°best year-round tilt here; across Indonesia it runs from 0° in Batam to 12° in Kupang.
Of the 447 places in Indonesia, Lewoleba gets the most sun (5.95 peak sun hours a day) and Kuala Tungkal the least (4.48); Lumajang ranks joint 34th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.30 kWh a day here, against 1.26 kWh on average in Indonesia. The shortest day lasts 11 h 39 min, −7 min compared with Jakarta.
Solar forecast for Lumajang, 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 Lumajang
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Places near Lumajang
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A free, live card for Lumajang: 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.