East Nusa Tenggara · Indonesia · 9.66° S · 120.26° E
Solar position in Waingapu
Sun position, daylight and the best solar panel angle for Waingapu — computed for 9.66° S, 120.26° E, 26 m above sea level.
The sun right now
Sun in Waingapu today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:19 | sun 18° below horizon |
| Nautical dawn | 04:44 | 12° below |
| Civil dawn | 05:09 | 6° below |
| Sunrise | 05:31 | 102° ESE |
| Golden hour ends | 05:59 | sun 6° up |
| Solar noon | 11:43 | 87.6° high |
| Golden hour starts | 17:26 | sun 6° up |
| Sunset | 17:54 | 258° WSW |
| Civil dusk | 18:16 | 6° below |
| Nautical dusk | 18:41 | 12° below |
| Astronomical dusk | 19:06 | 18° below |
| Day length | 12 h 24 min | |
Sun path diagram for Waingapu
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 56.9° at solar noon in Waingapu; on the December solstice only 76.2°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 48° 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 | 05:52 | 12:10 | 18:27 | 12 h 36 min | 79.8° |
| February | 06:01 | 12:12 | 18:23 | 12 h 21 min | 89.1° |
| March | 06:02 | 12:06 | 18:09 | 12 h 06 min | 80.1° |
| April | 06:02 | 11:57 | 17:52 | 11 h 50 min | 68.5° |
| May | 06:06 | 11:55 | 17:44 | 11 h 39 min | 60.2° |
| June | 06:13 | 12:00 | 17:47 | 11 h 34 min | 56.9° |
| July | 06:16 | 12:05 | 17:54 | 11 h 38 min | 59.9° |
| August | 06:07 | 12:02 | 17:57 | 11 h 50 min | 68.2° |
| September | 05:49 | 11:52 | 17:55 | 12 h 06 min | 79.6° |
| October | 05:32 | 11:43 | 17:54 | 12 h 21 min | 89.0° |
| November | 05:26 | 11:44 | 18:02 | 12 h 36 min | 79.8° |
| December | 05:36 | 11:56 | 18:17 | 12 h 41 min | 76.2° |
A year of daylight in Waingapu
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 Waingapu
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: 1714 kWh per kWp.
10°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 | January kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1686 | 98% | 4.47 | 1.4× |
| 10° off-grid best = latitude | 1713 | 100% | 4.26 | 1.2× |
| 11° year-round best | 1714 | 100% | 4.23 | 1.3× |
| 15° | 1711 | 100% | 4.11 | 1.3× |
| 30° | 1638 | 96% | 3.54 | 1.5× |
| 45° | 1471 | 86% | 2.79 | 1.8× |
| 60° | 1225 | 71% | 1.94 | 2.5× |
| 70° | 1032 | 60% | 1.41 | 3.2× |
| 90° | 686 | 40% | 1.13 | 3.3× |
A fixed array in Waingapu produces the most over a year at 11°. The design month for an off-grid system is January: at 10° it makes 4.26 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Waingapu 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 | 5.65 | 1.79 | 1.41 | 4.23 | 27.4 °C |
| February | 5.83 | 2.30 | 1.83 | 4.48 | 27.3 °C |
| March | 5.83 | 3.15 | 2.54 | 4.63 | 27.5 °C |
| April | 5.71 | 4.23 | 3.43 | 4.73 | 27.6 °C |
| May | 5.27 | 4.92 | 4.01 | 4.54 | 26.9 °C |
| June | 4.90 | 5.07 | 4.14 | 4.31 | 26.0 °C |
| July | 5.15 | 5.15 | 4.22 | 4.52 | 25.4 °C |
| August | 5.89 | 4.92 | 4.03 | 5.02 | 25.5 °C |
| September | 6.54 | 4.00 | 3.25 | 5.32 | 26.6 °C |
| October | 6.84 | 2.75 | 2.21 | 5.29 | 28.0 °C |
| November | 6.58 | 1.85 | 1.45 | 4.91 | 28.7 °C |
| December | 5.87 | 1.70 | 1.33 | 4.35 | 28.0 °C |
| Year | 5.84 avg | 3.49 avg | 1032 kWh | 1714 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 890 Wp of panels at 70°, versus 280 Wp at 11°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Waingapu
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.
2.1 mrow pitch at 70°
2.2 mrow pitch at 11°
How Waingapu compares in Indonesia
Against the other 446 places in Indonesia with climate data, for a fixed array at its best angle.
5thof 447 places in Indonesia for sunshine, shared: 5.84 peak sun hours a day on flat ground.
+14%solar energy a year compared with the average place in Indonesia: 1,714 against 1,498 kWh per kWp.
+12 mindaylight on the longest day, compared with Jakarta: 12 h 41 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); Waingapu ranks joint 5th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.33 kWh a day here, against 1.26 kWh on average in Indonesia. The shortest day lasts 11 h 34 min, −12 min compared with Jakarta.
Solar forecast for Waingapu, 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 Waingapu
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Places near Waingapu
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A free, live card for Waingapu: 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.