Sun Path: Cork, Ireland

Direct answer

For Cork at 51.8980, -8.4706, the declination-only solar-noon altitude is approximately 61.5° at the June solstice, 38.1° at an equinox and 14.7° 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 2965140 in administrative area M, at 51.8980, -8.4706; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 61.5° at the June solstice, 38.1° at an equinox and 14.7° at the December solstice. Representative 21st-day geometry ranges from about 7.5 hours in December to 16.5 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.

Prepared by Harth · Prepared from the cited location and country sources; local project inputs remain unreviewed · Published 2026-08-26 · Updated 2026-08-31.

What must be verified for Cork?

Cork is represented here at approximately 51.8980, -8.4706 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 Cork site remain authoritative.

Cork monthly solar geometry check for sun path

Cork solar-geometry fingerprint at 51.8980, -8.4706

• Cork, 21 January: declination -20.14°, noon altitude 17.96°, zenith 72.04°, geometric daylight 8.283 hours, and vertical-object noon shadow ratio 3.084.
• Cork, 21 February: declination -11.23°, noon altitude 26.88°, zenith 63.12°, geometric daylight 10.045 hours, and vertical-object noon shadow ratio 1.973.
• Cork, 21 March: declination -0.40°, noon altitude 37.70°, zenith 52.30°, geometric daylight 11.931 hours, and vertical-object noon shadow ratio 1.294.
• Cork, 21 April: declination +11.58°, noon altitude 49.68°, zenith 40.32°, geometric daylight 14.020 hours, and vertical-object noon shadow ratio 0.849.
• Cork, 21 May: declination +20.14°, noon altitude 58.24°, zenith 31.76°, geometric daylight 15.717 hours, and vertical-object noon shadow ratio 0.619.
• Cork, 21 June: declination +23.45°, noon altitude 61.55°, zenith 28.45°, geometric daylight 16.478 hours, and vertical-object noon shadow ratio 0.542.
• Cork, 21 July: declination +20.44°, noon altitude 58.54°, zenith 31.46°, geometric daylight 15.784 hours, and vertical-object noon shadow ratio 0.612.
• Cork, 21 August: declination +11.75°, noon altitude 49.86°, zenith 40.14°, geometric daylight 14.052 hours, and vertical-object noon shadow ratio 0.843.
• Cork, 21 September: declination -0.20°, noon altitude 37.90°, zenith 52.10°, geometric daylight 11.966 hours, and vertical-object noon shadow ratio 1.285.
• Cork, 21 October: declination -11.75°, noon altitude 26.35°, zenith 63.65°, geometric daylight 9.948 hours, and vertical-object noon shadow ratio 2.019.
• Cork, 21 November: declination -20.44°, noon altitude 17.66°, zenith 72.34°, geometric daylight 8.216 hours, and vertical-object noon shadow ratio 3.141.
• Cork, 21 December: declination -23.45°, noon altitude 14.65°, zenith 75.35°, geometric daylight 7.522 hours, and vertical-object noon shadow ratio 3.825.

Harth computed the Cork fingerprint for latitude 51.8980° with the Cooper declination approximation, 90° - |latitude - declination| at solar noon, centre-to-centre sunrise hour angle and 1 / tan(altitude) shadow ratio. Longitude -8.4706° is retained for a later civil-time conversion; this screen does not perform that conversion. See NOAA's solar calculation details. Atmospheric refraction, terrain, facade azimuth and obstructions remain outside this first-pass comparison.

Where can you explore related guidance?

• Explore all solar data guidance
• Sun Path: Douglas, Ireland
• Sun Path: Carrigaline, Ireland
• Sun Path: Ballincollig, Ireland
• Sun Path: Castletroy, Ireland
• All solar & daylight data guidance for Ireland

Sources and method

Location data from the GeoNames IE dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2965140). Regulatory starting point: Department of Housing, Local Government and Heritage and the local building-control 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

• gov.ie

• gml.noaa.gov