Mpumalanga · South Africa · 25.11° S · 29.04° E
Solar position in Siyabuswa
Sun position, daylight and the best solar panel angle for Siyabuswa — computed for 25.11° S, 29.04° E, 935 m above sea level.
The sun right now
Sun in Siyabuswa today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:02 | sun 18° below horizon |
| Nautical dawn | 04:30 | 12° below |
| Civil dawn | 04:58 | 6° below |
| Sunrise | 05:21 | 103° ESE |
| Golden hour ends | 05:52 | sun 6° up |
| Solar noon | 11:48 | 76.7° high |
| Golden hour starts | 17:43 | sun 6° up |
| Sunset | 18:14 | 256° WSW |
| Civil dusk | 18:38 | 6° below |
| Nautical dusk | 19:05 | 12° below |
| Astronomical dusk | 19:34 | 18° below |
| Day length | 12 h 53 min | |
Sun path diagram for Siyabuswa
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 41.5° at solar noon in Siyabuswa; on the December solstice only 88.3°. Sunrise swings from 64° ENE in June to 116° ESE in December — a 52° 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 | 05:31 | 12:15 | 18:57 | 13 h 26 min | 84.7° |
| February | 05:53 | 12:17 | 18:40 | 12 h 47 min | 75.4° |
| March | 06:07 | 12:10 | 18:13 | 12 h 06 min | 64.6° |
| April | 06:21 | 12:02 | 17:43 | 11 h 22 min | 53.0° |
| May | 06:36 | 12:00 | 17:24 | 10 h 48 min | 44.7° |
| June | 06:48 | 12:05 | 17:22 | 10 h 34 min | 41.5° |
| July | 06:46 | 12:10 | 17:34 | 10 h 48 min | 44.5° |
| August | 06:26 | 12:07 | 17:47 | 11 h 22 min | 52.9° |
| September | 05:54 | 11:57 | 17:59 | 12 h 05 min | 64.3° |
| October | 05:24 | 11:48 | 18:12 | 12 h 48 min | 75.7° |
| November | 05:06 | 11:49 | 18:33 | 13 h 26 min | 84.8° |
| December | 05:10 | 12:01 | 18:52 | 13 h 42 min | 88.3° |
A year of daylight in Siyabuswa
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 Siyabuswa
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
27°collects the most energy over a year: 1858 kWh per kWp.
26°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° | 1672 | 90% | 5.39 | 1.6× |
| 15° | 1820 | 98% | 5.13 | 1.2× |
| 25° = latitude | 1857 | 100% | 4.80 | 1.2× |
| 26° off-grid best | 1858 | 100% | 4.76 | 1.2× |
| 27° year-round best | 1858 | 100% | 4.72 | 1.2× |
| 30° | 1857 | 100% | 4.59 | 1.2× |
| 45° | 1783 | 96% | 3.81 | 1.5× |
| 60° | 1604 | 86% | 2.87 | 2.0× |
| 70° | 1434 | 77% | 2.20 | 2.6× |
| 90° | 1016 | 55% | 1.17 | 4.2× |
A fixed array in Siyabuswa produces the most over a year at 27°. The design month for an off-grid system is December: at 26° it makes 4.76 kWh per kWp a day, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Siyabuswa at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 27° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 27° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.74 | 2.86 | 2.33 | 4.83 | 23.5 °C |
| February | 6.41 | 3.56 | 2.92 | 4.97 | 23.4 °C |
| March | 5.75 | 4.29 | 3.56 | 4.94 | 21.9 °C |
| April | 4.87 | 4.97 | 4.18 | 4.78 | 19.0 °C |
| May | 4.52 | 6.19 | 5.27 | 5.16 | 15.7 °C |
| June | 4.09 | 6.40 | 5.51 | 5.05 | 12.5 °C |
| July | 4.40 | 6.59 | 5.68 | 5.32 | 12.3 °C |
| August | 5.13 | 6.16 | 5.24 | 5.51 | 15.7 °C |
| September | 6.06 | 5.28 | 4.42 | 5.61 | 19.6 °C |
| October | 6.52 | 3.96 | 3.28 | 5.27 | 22.0 °C |
| November | 6.71 | 3.02 | 2.47 | 4.93 | 22.8 °C |
| December | 6.70 | 2.71 | 2.20 | 4.72 | 23.5 °C |
| Year | 5.65 avg | 4.67 avg | 1434 kWh | 1858 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 540 Wp of panels at 70°, versus 250 Wp at 27°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Siyabuswa
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.
3.1 mrow pitch at 70°
2.9 mrow pitch at 27°
How Siyabuswa compares in South Africa
Against the other 294 places in South Africa with climate data, for a fixed array at its best angle.
76thof 295 places in South Africa for sunshine, shared: 5.66 peak sun hours a day on flat ground.
+3%solar energy a year compared with the average place in South Africa: 1,858 against 1,806 kWh per kWp.
−5 mindaylight on the longest day, compared with Johannesburg: 13 h 42 min against 13 h 47 min.
27°best year-round tilt here; across South Africa it runs from 24° in Thohoyandou to 32° in East London.
Of the 295 places in South Africa, Upington gets the most sun (6.28 peak sun hours a day) and Port Shepstone the least (4.46); Siyabuswa ranks joint 76th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.20 kWh a day here, against 2.42 kWh on average in South Africa. The shortest day lasts 10 h 34 min, +5 min compared with Johannesburg.
Solar forecast for Siyabuswa, 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 Siyabuswa: 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.