Sun Path: Vaughan, Canada

Direct answer

For Vaughan at 43.8361, -79.4983, the declination-only solar-noon altitude is approximately 69.6° at the June solstice, 46.2° at an equinox and 22.7° at the December solstice. Refine these geometry checks with the project date, civil time, facade azimuth, terrain and local horizon. The reproducible location record is GeoNames ID 6173577 in administrative area 08, at 43.8361, -79.4983; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 69.6° at the June solstice, 46.2° at an equinox and 22.7° at the December solstice. Representative 21st-day geometry ranges from about 8.7 hours in December to 15.3 hours in June; this excludes atmospheric refraction, terrain and obstruction effects. The cited national authority is a discovery starting point; current local documents and a named qualified reviewer control project use of this sun path record.

Content and cited inputs reviewed by Scott Barrington, Harth founder and architectural technology specialist · Published 2026-08-26 · Updated 2026-08-31.

What must be verified for Vaughan?

Vaughan is represented here at approximately 43.8361, -79.4983 for discovery and workflow planning. A project address, parcel, elevation, exposure, authority, and submission date must replace that city-centre reference before design use.

How should sun path be established?

1. Fix the surveyed site and local time basis.
2. Select an authoritative weather source or a named solar-position algorithm.
3. Record period, percentile or scenario and units.
4. Test sensitivity to elevation, exposure, urban form and horizon.
5. Save the source file, retrieval date and checker in the model record.

What are the limits of this worksheet?

This sun-path-workflow page is a project-starting worksheet, not a design value or approval. The controlling authority and qualified professionals for the Vaughan site remain authoritative.

Vaughan monthly solar geometry check for sun path

Month-by-month geometry interpretation

• 21 January: approximate solar-noon altitude 26.0° (zenith angle 64.0°) and 9.3 hours of geometric daylight. That is 0.5 hours longer than the preceding representative date in this annual sequence.
• 21 February: approximate solar-noon altitude 34.9° (zenith angle 55.1°) and 10.5 hours of geometric daylight. That is 1.3 hours longer than the preceding representative date in this annual sequence.
• 21 March: approximate solar-noon altitude 45.8° (zenith angle 44.2°) and 11.9 hours of geometric daylight. That is 1.4 hours longer than the preceding representative date in this annual sequence.
• 21 April: approximate solar-noon altitude 57.7° (zenith angle 32.3°) and 13.5 hours of geometric daylight. That is 1.6 hours longer than the preceding representative date in this annual sequence.
• 21 May: approximate solar-noon altitude 66.3° (zenith angle 23.7°) and 14.7 hours of geometric daylight. That is 1.2 hours longer than the preceding representative date in this annual sequence.
• 21 June: approximate solar-noon altitude 69.6° (zenith angle 20.4°) and 15.3 hours of geometric daylight. That is 0.5 hours longer than the preceding representative date in this annual sequence.
• 21 July: approximate solar-noon altitude 66.6° (zenith angle 23.4°) and 14.8 hours of geometric daylight. That is 0.5 hours shorter than the preceding representative date in this annual sequence.
• 21 August: approximate solar-noon altitude 57.9° (zenith angle 32.1°) and 13.5 hours of geometric daylight. That is 1.3 hours shorter than the preceding representative date in this annual sequence.
• 21 September: approximate solar-noon altitude 46.0° (zenith angle 44.0°) and 12.0 hours of geometric daylight. That is 1.6 hours shorter than the preceding representative date in this annual sequence.
• 21 October: approximate solar-noon altitude 34.4° (zenith angle 55.6°) and 10.5 hours of geometric daylight. That is 1.5 hours shorter than the preceding representative date in this annual sequence.
• 21 November: approximate solar-noon altitude 25.7° (zenith angle 64.3°) and 9.2 hours of geometric daylight. That is 1.3 hours shorter than the preceding representative date in this annual sequence.
• 21 December: approximate solar-noon altitude 22.7° (zenith angle 67.3°) and 8.7 hours of geometric daylight. That is 0.5 hours shorter than the preceding representative date in this annual sequence.

Harth calculation for latitude 43.8361°: Cooper declination approximation, 90° - |latitude - declination| at solar noon, and centre-to-centre sunrise hour angle. See NOAA's solar calculation details for fuller method context. This screening table excludes equation-of-time/civil-time conversion, atmospheric refraction, terrain, facade azimuth and obstructions; it is not an hourly shading result.

Where can you explore related guidance?

• Explore all solar data guidance
• Sun Path: Toronto, Canada
• Sun Path: Etobicoke, Canada
• Sun Path: Mississauga, Canada
• Sun Path: Oakville, Canada
• All solar & daylight data guidance for Canada
• House Construction Cost Planning: Vaughan, Canada
• Office Construction Cost Planning: Vaughan, Canada
• Retail Construction Cost Planning: Vaughan, Canada
• School Construction Cost Planning: Vaughan, Canada

Sources and method

Location data from the GeoNames CA dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 6173577). Regulatory starting point: Codes Canada and the applicable provincial or territorial authority. Figures are illustrative — verify against the current locally adopted edition for the site. Solar-method context: NOAA Solar Calculation Details; the Harth monthly table uses a simpler declination and geometric-daylight approximation whose stated limitations must be retained.

Source links

• download.geonames.org

• nrc.canada.ca

• gml.noaa.gov