New South Wales · Australia · 33.70° S · 151.10° E
Solar position in Hornsby
Sun position, daylight and the best solar panel angle for Hornsby — computed for 33.70° S, 151.10° E, 186 m above sea level.
The sun right now
Sun in Hornsby today
Sunday, 25 October 2026 · local time UTC+11
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:34 | sun 18° below horizon |
| Nautical dawn | 05:06 | 12° below |
| Civil dawn | 05:37 | 6° below |
| Sunrise | 06:03 | 105° ESE |
| Golden hour ends | 06:36 | sun 6° up |
| Solar noon | 12:39 | 68.4° high |
| Golden hour starts | 18:43 | sun 6° up |
| Sunset | 19:16 | 255° WSW |
| Civil dusk | 19:42 | 6° below |
| Nautical dusk | 20:13 | 12° below |
| Astronomical dusk | 20:46 | 18° below |
| Day length | 13 h 14 min | |
Sun path diagram for Hornsby
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 32.9° at solar noon in Hornsby; on the December solstice only 79.7°. Sunrise swings from 62° ENE in June to 119° ESE in December — a 57° 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 | 06:06 | 13:06 | 20:07 | 14 h 01 min | 76.2° |
| February | 06:36 | 13:09 | 19:41 | 13 h 06 min | 66.9° |
| March | 06:59 | 13:02 | 19:06 | 12 h 07 min | 56.1° |
| April | 06:22 | 11:54 | 17:26 | 11 h 04 min | 44.5° |
| May | 06:44 | 11:52 | 16:59 | 10 h 15 min | 36.2° |
| June | 06:59 | 11:57 | 16:54 | 9 h 55 min | 32.9° |
| July | 06:55 | 12:02 | 17:08 | 10 h 13 min | 35.8° |
| August | 06:28 | 11:59 | 17:30 | 11 h 02 min | 44.2° |
| September | 05:47 | 11:49 | 17:50 | 12 h 04 min | 55.6° |
| October | 06:07 | 12:40 | 19:13 | 13 h 06 min | 67.0° |
| November | 05:41 | 12:41 | 19:41 | 14 h 01 min | 76.2° |
| December | 05:41 | 12:53 | 20:05 | 14 h 24 min | 79.7° |
A year of daylight in Hornsby
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 Hornsby
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
32°collects the most energy over a year: 1583 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 | June kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1379 | 87% | 1.89 | 2.8× |
| 15° | 1526 | 96% | 2.56 | 2.0× |
| 30° | 1583 | 100% | 3.07 | 1.6× |
| 32° year-round best | 1583 | 100% | 3.12 | 1.6× |
| 34° = latitude | 1582 | 100% | 3.17 | 1.6× |
| 45° | 1546 | 98% | 3.38 | 1.4× |
| 57° off-grid best | 1451 | 92% | 3.48 | 1.3× |
| 60° | 1419 | 90% | 3.48 | 1.4× |
| 70° | 1289 | 81% | 3.42 | 1.6× |
| 90° | 947 | 60% | 3.03 | 2.6× |
A fixed array in Hornsby produces the most over a year at 32°. The design month for an off-grid system is June: at 57° it makes 3.48 kWh per kWp a day, 11% more than at 32°, and costs 8% of the yearly total. Why steep panels win winter.
Off-grid solar in Hornsby at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 32° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 32° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.48 | 3.38 | 2.77 | 4.77 | 22.7 °C |
| February | 5.57 | 3.74 | 3.09 | 4.52 | 22.0 °C |
| March | 4.76 | 4.17 | 3.48 | 4.35 | 20.3 °C |
| April | 3.81 | 4.52 | 3.81 | 4.07 | 17.9 °C |
| May | 3.01 | 4.63 | 3.96 | 3.76 | 14.8 °C |
| June | 2.37 | 3.97 | 3.42 | 3.12 | 12.5 °C |
| July | 2.78 | 4.66 | 4.03 | 3.70 | 11.6 °C |
| August | 3.68 | 5.03 | 4.35 | 4.36 | 12.2 °C |
| September | 4.86 | 4.97 | 4.25 | 4.91 | 14.8 °C |
| October | 5.70 | 4.24 | 3.58 | 4.94 | 17.1 °C |
| November | 6.21 | 3.52 | 2.93 | 4.78 | 19.2 °C |
| December | 6.58 | 3.24 | 2.67 | 4.78 | 20.9 °C |
| Year | 4.65 avg | 4.18 avg | 1289 kWh | 1583 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 440 Wp of panels at 70°, versus 380 Wp at 32°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Hornsby
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.
4.0 mrow pitch at 70°
3.6 mrow pitch at 32°
How Hornsby compares in Australia
Against the other 88 places in Australia with climate data, for a fixed array at its best angle.
65thof 89 places in Australia for sunshine, shared: 4.65 peak sun hours a day on flat ground.
−5%solar energy a year compared with the average place in Australia: 1,583 against 1,665 kWh per kWp.
−1 mindaylight on the longest day, compared with Sydney: 14 h 24 min against 14 h 25 min.
32°best year-round tilt here; across Australia it runs from 16° in Cairns to 35° in Hobart.
Of the 89 places in Australia, Port Hedland gets the most sun (6.31 peak sun hours a day) and Hobart the least (3.89); Hornsby ranks joint 65th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.67 kWh a day here, against 2.60 kWh on average in Australia. The shortest day lasts 9 h 55 min, +1 min compared with Sydney.
Solar forecast for Hornsby, 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 Hornsby
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Places near Hornsby
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A free, live card for Hornsby: 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.