Solar & Daylight Data
Sun Path: Tralee, Ireland
How to research sun path for a specific site in Tralee — the controlling authority, source documents, and checks to run before you rely on a number.
Last updated August 31, 2026 · Location data from the [GeoNames IE dump](https://download.geonames.org/export/dump/IE.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2961123). Regulatory starting point: [Department of Housing, Local Government and Heritage and the local building-control authority](https://www.gov.ie/en/department-of-housing-local-government-and-heritage/collections/building-standards/). Figures are illustrative — verify against the current locally adopted edition for the site. Solar-method context: [NOAA Solar Calculation Details](https://gml.noaa.gov/grad/solcalc/calcdetails.html); the Harth monthly table uses a simpler declination and geometric-daylight approximation whose stated limitations must be retained.
Direct answer
For Tralee at 52.2704, -9.7026, the declination-only solar-noon altitude is approximately 61.2° at the June solstice, 37.7° at an equinox and 14.3° 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 2961123 in administrative area M, at 52.2704, -9.7026; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 61.2° at the June solstice, 37.7° at an equinox and 14.3° 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 Tralee?
Tralee is represented here at approximately 52.2704, -9.7026 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?
- Fix the surveyed site and local time basis.
- Select an authoritative weather source or a named solar-position algorithm.
- Record period, percentile or scenario and units.
- Test sensitivity to elevation, exposure, urban form and horizon.
- Save the source file, retrieval date and checker in the model record.
| Input | Project-specific evidence | QA question |
|---|---|---|
| Site | surveyed coordinates, elevation and horizon | Does the point represent the building? |
| Weather/solar method | named dataset, algorithm, period and time basis | Are station, time zone and units explicit? |
| Design scenario | current and future scenario agreed by the team | Is an average being mistaken for an extreme? |
| Compliance | adopted local document and edition | Was applicability confirmed with the authority? |
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 Tralee site remain authoritative.
Tralee monthly solar geometry check for sun path
| Representative date | Declination | Solar-noon altitude | Geometric daylight | Noon shadow / height |
|---|---|---|---|---|
| 21 January | -20.14° | 17.59° | 8.228 h | 3.154 |
| 21 February | -11.23° | 26.50° | 10.018 h | 2.005 |
| 21 March | -0.40° | 37.33° | 11.930 h | 1.311 |
| 21 April | +11.58° | 49.31° | 14.047 h | 0.860 |
| 21 May | +20.14° | 57.87° | 15.772 h | 0.628 |
| 21 June | +23.45° | 61.18° | 16.547 h | 0.550 |
| 21 July | +20.44° | 58.17° | 15.840 h | 0.621 |
| 21 August | +11.75° | 49.48° | 14.080 h | 0.855 |
| 21 September | -0.20° | 37.53° | 11.965 h | 1.302 |
| 21 October | -11.75° | 25.98° | 9.920 h | 2.053 |
| 21 November | -20.44° | 17.29° | 8.160 h | 3.213 |
| 21 December | -23.45° | 14.28° | 7.453 h | 3.929 |
Tralee solar-geometry fingerprint at 52.2704, -9.7026
- Tralee, 21 January: declination -20.14°, noon altitude 17.59°, zenith 72.41°, geometric daylight 8.228 hours, and vertical-object noon shadow ratio 3.154.
- Tralee, 21 February: declination -11.23°, noon altitude 26.50°, zenith 63.50°, geometric daylight 10.018 hours, and vertical-object noon shadow ratio 2.005.
- Tralee, 21 March: declination -0.40°, noon altitude 37.33°, zenith 52.67°, geometric daylight 11.930 hours, and vertical-object noon shadow ratio 1.311.
- Tralee, 21 April: declination +11.58°, noon altitude 49.31°, zenith 40.69°, geometric daylight 14.047 hours, and vertical-object noon shadow ratio 0.860.
- Tralee, 21 May: declination +20.14°, noon altitude 57.87°, zenith 32.13°, geometric daylight 15.772 hours, and vertical-object noon shadow ratio 0.628.
- Tralee, 21 June: declination +23.45°, noon altitude 61.18°, zenith 28.82°, geometric daylight 16.547 hours, and vertical-object noon shadow ratio 0.550.
- Tralee, 21 July: declination +20.44°, noon altitude 58.17°, zenith 31.83°, geometric daylight 15.840 hours, and vertical-object noon shadow ratio 0.621.
- Tralee, 21 August: declination +11.75°, noon altitude 49.48°, zenith 40.52°, geometric daylight 14.080 hours, and vertical-object noon shadow ratio 0.855.
- Tralee, 21 September: declination -0.20°, noon altitude 37.53°, zenith 52.47°, geometric daylight 11.965 hours, and vertical-object noon shadow ratio 1.302.
- Tralee, 21 October: declination -11.75°, noon altitude 25.98°, zenith 64.02°, geometric daylight 9.920 hours, and vertical-object noon shadow ratio 2.053.
- Tralee, 21 November: declination -20.44°, noon altitude 17.29°, zenith 72.71°, geometric daylight 8.160 hours, and vertical-object noon shadow ratio 3.213.
- Tralee, 21 December: declination -23.45°, noon altitude 14.28°, zenith 75.72°, geometric daylight 7.453 hours, and vertical-object noon shadow ratio 3.929.
Harth computed the Tralee fingerprint for latitude 52.2704° with the Cooper declination approximation, 90° - |latitude - declination| at solar noon, centre-to-centre sunrise hour angle and 1 / tan(altitude) shadow ratio. Longitude -9.7026° 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: Ennis, Ireland
- Sun Path: Limerick, Ireland
- Sun Path: Ballincollig, Ireland
- Sun Path: Galway, Ireland
- All solar & daylight data guidance for Ireland
- Climate Design Data: Tralee, Ireland
Sources and method
Location data from the GeoNames IE dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2961123). 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
Frequently asked questions
What does the sun path record for Tralee establish?
The sun path record for Tralee establishes a reproducible discovery point at 52.2704, -9.7026 (GeoNames ID 2961123, administrative area M) and a Ireland source path. It does not establish a final project value, approval or parcel decision.
What must be replaced before using this sun path workflow for a project in Tralee?
For the sun path record in Tralee, replace the 52.2704, -9.7026 city reference with the surveyed site or parcel, identify the competent local authority, and verify the current documents under Building Regulations and Technical Guidance Documents. Record the edition, retrieval date, units, assumptions and named checker before relying on the result.
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