Western Australia · Australia · 33.65° S · 115.35° E
Solar position in Busselton
Sun position, daylight and the best solar panel angle for Busselton — computed for 33.65° S, 115.35° E, 7 m above sea level.
The sun right now
Sun in Busselton today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 03:57 | sun 18° below horizon |
| Nautical dawn | 04:29 | 12° below |
| Civil dawn | 05:00 | 6° below |
| Sunrise | 05:26 | 105° ESE |
| Golden hour ends | 05:59 | sun 6° up |
| Solar noon | 12:02 | 68.4° high |
| Golden hour starts | 18:06 | sun 6° up |
| Sunset | 18:39 | 255° WSW |
| Civil dusk | 19:05 | 6° below |
| Nautical dusk | 19:36 | 12° below |
| Astronomical dusk | 20:09 | 18° below |
| Day length | 13 h 14 min | |
Sun path diagram for Busselton
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 Busselton; on the December solstice only 79.8°. 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 | 05:29 | 12:29 | 19:29 | 14 h 01 min | 76.3° |
| February | 05:59 | 12:32 | 19:04 | 13 h 05 min | 66.9° |
| March | 06:22 | 12:25 | 18:28 | 12 h 07 min | 56.1° |
| April | 06:45 | 12:17 | 17:49 | 11 h 04 min | 44.5° |
| May | 07:07 | 12:15 | 17:22 | 10 h 15 min | 36.2° |
| June | 07:22 | 12:20 | 17:17 | 9 h 55 min | 32.9° |
| July | 07:18 | 12:25 | 17:32 | 10 h 14 min | 35.9° |
| August | 06:50 | 12:22 | 17:53 | 11 h 02 min | 44.2° |
| September | 06:10 | 12:11 | 18:14 | 12 h 04 min | 55.6° |
| October | 05:30 | 12:03 | 18:36 | 13 h 06 min | 67.0° |
| November | 05:04 | 12:04 | 19:04 | 14 h 00 min | 76.3° |
| December | 05:04 | 12:16 | 19:28 | 14 h 24 min | 79.8° |
A year of daylight in Busselton
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 Busselton
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: 1622 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° | 1471 | 91% | 1.79 | 3.5× |
| 15° | 1591 | 98% | 2.35 | 2.6× |
| 27° year-round best | 1622 | 100% | 2.69 | 2.2× |
| 30° | 1620 | 100% | 2.76 | 2.1× |
| 34° = latitude | 1612 | 99% | 2.85 | 2.0× |
| 45° | 1556 | 96% | 3.01 | 1.7× |
| 57° off-grid best | 1441 | 89% | 3.07 | 1.5× |
| 60° | 1404 | 87% | 3.07 | 1.5× |
| 70° | 1260 | 78% | 3.01 | 1.3× |
| 90° | 898 | 55% | 2.64 | 1.9× |
A fixed array in Busselton produces the most over a year at 27°. The design month for an off-grid system is June: at 57° it makes 3.07 kWh per kWp a day, 14% more than at 27°, and costs 11% of the yearly total. Why steep panels win winter.
Off-grid solar in Busselton 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 | 7.75 | 3.97 | 3.28 | 5.91 | 21.6 °C |
| February | 6.86 | 4.55 | 3.77 | 5.66 | 22.0 °C |
| March | 5.48 | 4.83 | 4.03 | 5.01 | 20.9 °C |
| April | 3.87 | 4.43 | 3.73 | 3.95 | 18.5 °C |
| May | 2.82 | 3.99 | 3.39 | 3.20 | 16.4 °C |
| June | 2.26 | 3.52 | 3.01 | 2.69 | 14.6 °C |
| July | 2.43 | 3.62 | 3.11 | 2.84 | 13.6 °C |
| August | 3.20 | 3.97 | 3.41 | 3.44 | 13.5 °C |
| September | 4.32 | 4.15 | 3.56 | 4.16 | 13.8 °C |
| October | 5.79 | 4.33 | 3.68 | 5.07 | 15.3 °C |
| November | 7.02 | 4.00 | 3.36 | 5.60 | 17.6 °C |
| December | 7.75 | 3.78 | 3.14 | 5.85 | 19.8 °C |
| Year | 4.95 avg | 4.09 avg | 1260 kWh | 1622 kWh |
Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 390 Wp of panels at 70°, versus 440 Wp at 27°. The steep array is 10% smaller for the same winter. Size your own system.
Row spacing in Busselton
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°
3.4 mrow pitch at 27°
How Busselton compares in Australia
Against the other 88 places in Australia with climate data, for a fixed array at its best angle.
48thof 89 places in Australia for sunshine: 4.96 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Australia: 1,622 against 1,665 kWh per kWp.
−1 mindaylight on the longest day, compared with Sydney: 14 h 24 min against 14 h 25 min.
27°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); Busselton ranks 48th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 3.01 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 Busselton, 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 Busselton
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A free, live card for Busselton: 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.