Western Australia · Australia · 31.95° S · 115.86° E
Solar position in Perth
Sun position, daylight and the best solar panel angle for Perth — computed for 31.95° S, 115.86° E, 34 m above sea level.
The sun right now
Sun in Perth today
Saturday, 24 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:00 | sun 18° below horizon |
| Nautical dawn | 04:31 | 12° below |
| Civil dawn | 05:01 | 6° below |
| Sunrise | 05:27 | 104° ESE |
| Golden hour ends | 06:00 | sun 6° up |
| Solar noon | 12:00 | 69.8° high |
| Golden hour starts | 18:01 | sun 6° up |
| Sunset | 18:34 | 255° WSW |
| Civil dusk | 19:00 | 6° below |
| Nautical dusk | 19:30 | 12° below |
| Astronomical dusk | 20:01 | 18° below |
| Day length | 13 h 08 min | |
Sun path diagram for Perth
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 34.6° at solar noon in Perth; on the December solstice only 81.5°. Sunrise swings from 63° ENE in June to 119° ESE in December — a 56° 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 | 05:30 | 12:27 | 19:24 | 13 h 53 min | 78.0° |
| February | 05:59 | 12:30 | 19:00 | 13 h 01 min | 68.6° |
| March | 06:20 | 12:23 | 18:26 | 12 h 07 min | 57.8° |
| April | 06:41 | 12:15 | 17:49 | 11 h 08 min | 46.2° |
| May | 07:01 | 12:12 | 17:24 | 10 h 23 min | 37.9° |
| June | 07:16 | 12:18 | 17:20 | 10 h 03 min | 34.6° |
| July | 07:12 | 12:23 | 17:33 | 10 h 21 min | 37.6° |
| August | 06:46 | 12:19 | 17:53 | 11 h 06 min | 45.9° |
| September | 06:07 | 12:09 | 18:12 | 12 h 04 min | 57.3° |
| October | 05:30 | 12:01 | 18:32 | 13 h 02 min | 68.7° |
| November | 05:05 | 12:02 | 18:59 | 13 h 53 min | 78.0° |
| December | 05:07 | 12:14 | 19:21 | 14 h 15 min | 81.5° |
A year of daylight in Perth
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 Perth
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: 1786 kWh per kWp.
58°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° | 1613 | 90% | 2.13 | 3.2× |
| 15° | 1752 | 98% | 2.85 | 2.3× |
| 27° year-round best | 1786 | 100% | 3.30 | 1.8× |
| 30° | 1785 | 100% | 3.39 | 1.7× |
| 32° = latitude | 1781 | 100% | 3.45 | 1.7× |
| 45° | 1712 | 96% | 3.72 | 1.4× |
| 58° off-grid best | 1567 | 88% | 3.81 | 1.3× |
| 60° | 1539 | 86% | 3.81 | 1.3× |
| 70° | 1374 | 77% | 3.73 | 1.5× |
| 90° | 962 | 54% | 3.27 | 2.7× |
A fixed array in Perth produces the most over a year at 27°. The design month for an off-grid system is June: at 58° it makes 3.81 kWh per kWp a day, 15% more than at 27°, and costs 12% of the yearly total. Why steep panels win winter.
Off-grid solar in Perth 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 | 8.18 | 3.73 | 3.05 | 6.00 | 24.2 °C |
| February | 7.29 | 4.55 | 3.73 | 5.88 | 24.3 °C |
| March | 6.02 | 5.21 | 4.31 | 5.47 | 22.7 °C |
| April | 4.37 | 5.11 | 4.28 | 4.53 | 19.6 °C |
| May | 3.27 | 4.84 | 4.11 | 3.83 | 16.6 °C |
| June | 2.67 | 4.36 | 3.73 | 3.30 | 14.3 °C |
| July | 2.83 | 4.38 | 3.77 | 3.42 | 13.2 °C |
| August | 3.66 | 4.66 | 4.01 | 4.03 | 13.4 °C |
| September | 4.91 | 4.78 | 4.09 | 4.80 | 14.2 °C |
| October | 6.41 | 4.59 | 3.89 | 5.56 | 16.7 °C |
| November | 7.66 | 3.96 | 3.30 | 5.93 | 19.8 °C |
| December | 8.36 | 3.55 | 2.92 | 6.05 | 22.3 °C |
| Year | 5.46 avg | 4.47 avg | 1374 kWh | 1786 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 400 Wp of panels at 70°, versus 360 Wp at 27°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Perth
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.
3.8 mrow pitch at 70°
3.3 mrow pitch at 27°
How Perth compares in Australia
Against the other 88 places in Australia with climate data, for a fixed array at its best angle.
14thof 89 places in Australia for sunshine, shared: 5.46 peak sun hours a day on flat ground.
+7%solar energy a year compared with the average place in Australia: 1,786 against 1,665 kWh per kWp.
−10 mindaylight on the longest day, compared with Sydney: 14 h 15 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); Perth ranks joint 14th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.92 kWh a day here, against 2.60 kWh on average in Australia. The shortest day lasts 10 h 03 min, +10 min compared with Sydney.
Solar forecast for Perth, 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 Perth
What is the best solar panel angle in Perth?
What time is sunrise and sunset in Perth today?
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Places near Perth
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A free, live card for Perth: 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.