Solar Altitude & Azimuth: Perth, Australia

Direct answer

In Perth the sun reaches its highest point of the year, 81.5°, at 12:14 AWST on 22 December, and its lowest noon altitude, 34.6°, on 21 June. On 21 June it is 17.2° high at 09:00 and 22.5° at 15:00 local time, bearing 47° and 320° from north. At solar noon on 21 June (12:18 AWST) the sun bears 0° (N) at 34.6°. On 21 December it is 46.5° high at 09:00 and 52.6° at 15:00. The tables below give altitude and azimuth for every daylight hour on the 21st of each month in Australia/Perth clock time, calculated with NOAA's solar equations for the city-centre point.

Content and cited inputs reviewed by Harth team · Published 2026-08-26 · Updated 2026-09-25.

Where is the sun over Perth at each hour on the solstices and equinoxes?

Perth solar altitude at each hour, month by month

Perth solar azimuth at each hour, month by month

Reading the Perth angle tables

Altitude is the sun's height above the horizon; azimuth is its bearing clockwise from true north. Hours are local clock time, so rows shift by an hour across a daylight-saving change. On 21 June the sun stands 17.2° high at 09:00 (bearing 47° (NE)) and 22.5° at 15:00 (320° (NW)); those are the angles to test winter overshadowing from neighbouring buildings. On 21 December the same hours give 46.5° and 52.6°.

How these angles were calculated

Harth applied NOAA's solar-position equations, with standard atmospheric refraction, to the GeoNames point -31.9522, 115.8614 and converted each hour with the Australia/Perth time zone. The angles hold to within about a tenth of a degree across the city centre; a site several kilometres away, or one with a raised horizon, should be recalculated from its own coordinates.

Where can you explore related guidance?

• Explore all solar data guidance
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• All solar & daylight data guidance for Australia
• Climate Design Data: Perth, Australia
• House Construction Cost Planning: Perth, Australia
• Office Construction Cost Planning: Perth, Australia
• Retail Construction Cost Planning: Perth, Australia

Sources and method

Location: GeoNames point -31.9522, 115.8614 (GeoNames AU dump, CC BY 4.0, ID 2063523); time zone Australia/Perth from the same GeoNames record. Sun positions, sunrise and sunset calculated by Harth with NOAA's solar calculator equations, including standard atmospheric refraction, for a sea-level horizon.

Source links

• download.geonames.org

• gml.noaa.gov