Solar & Daylight Data
Sun Path: Ile-Ife, Nigeria
How to research sun path for a specific site in Ile-Ife — 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 NG dump](https://download.geonames.org/export/dump/NG.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2338900). Regulatory starting point: [Federal Ministry of Housing and Urban Development and the applicable state authority](https://fmhud.gov.ng/). 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 Ile-Ife at 7.4824, 4.5603, the declination-only solar-noon altitude is approximately 74.0° at the June solstice, 82.5° at an equinox and 59.1° 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 2338900 in administrative area 42, at 7.4824, 4.5603; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 74.0° at the June solstice, 82.5° at an equinox and 59.1° at the December solstice. Representative 21st-day geometry ranges from about 11.6 hours in December to 12.4 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 Ile-Ife?
Ile-Ife is represented here at approximately 7.4824, 4.5603 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 Ile-Ife site remain authoritative.
Which related searches does this primary location record cover?
This primary route consolidates the location evidence needed for Sun Path, Solar Altitude & Azimuth, Solar Shading Design, Daylight & Orientation. A narrower route should be released only when it adds a materially different official source, calculation, process, threshold or worked example.
Ile-Ife monthly solar geometry check for sun path
| Representative date | Declination | Solar-noon altitude | Geometric daylight |
|---|---|---|---|
| 21 January | -20.14° | 62.4° | 11.6 h |
| 21 February | -11.23° | 71.3° | 11.8 h |
| 21 March | -0.40° | 82.1° | 12.0 h |
| 21 April | +11.58° | 85.9° | 12.2 h |
| 21 May | +20.14° | 77.3° | 12.4 h |
| 21 June | +23.45° | 74.0° | 12.4 h |
| 21 July | +20.44° | 77.0° | 12.4 h |
| 21 August | +11.75° | 85.7° | 12.2 h |
| 21 September | -0.20° | 82.3° | 12.0 h |
| 21 October | -11.75° | 70.8° | 11.8 h |
| 21 November | -20.44° | 62.1° | 11.6 h |
| 21 December | -23.45° | 59.1° | 11.6 h |
Month-by-month geometry interpretation
- 21 January: approximate solar-noon altitude 62.4° (zenith angle 27.6°) and 11.6 hours of geometric daylight. That is 0.1 hours longer than the preceding representative date in this annual sequence.
- 21 February: approximate solar-noon altitude 71.3° (zenith angle 18.7°) and 11.8 hours of geometric daylight. That is 0.2 hours longer than the preceding representative date in this annual sequence.
- 21 March: approximate solar-noon altitude 82.1° (zenith angle 7.9°) and 12.0 hours of geometric daylight. That is 0.2 hours longer than the preceding representative date in this annual sequence.
- 21 April: approximate solar-noon altitude 85.9° (zenith angle 4.1°) and 12.2 hours of geometric daylight. That is 0.2 hours longer than the preceding representative date in this annual sequence.
- 21 May: approximate solar-noon altitude 77.3° (zenith angle 12.7°) and 12.4 hours of geometric daylight. That is 0.2 hours longer than the preceding representative date in this annual sequence.
- 21 June: approximate solar-noon altitude 74.0° (zenith angle 16.0°) and 12.4 hours of geometric daylight. That is 0.1 hours longer than the preceding representative date in this annual sequence.
- 21 July: approximate solar-noon altitude 77.0° (zenith angle 13.0°) and 12.4 hours of geometric daylight. That is 0.1 hours shorter than the preceding representative date in this annual sequence.
- 21 August: approximate solar-noon altitude 85.7° (zenith angle 4.3°) and 12.2 hours of geometric daylight. That is 0.2 hours shorter than the preceding representative date in this annual sequence.
- 21 September: approximate solar-noon altitude 82.3° (zenith angle 7.7°) and 12.0 hours of geometric daylight. That is 0.2 hours shorter than the preceding representative date in this annual sequence.
- 21 October: approximate solar-noon altitude 70.8° (zenith angle 19.2°) and 11.8 hours of geometric daylight. That is 0.2 hours shorter than the preceding representative date in this annual sequence.
- 21 November: approximate solar-noon altitude 62.1° (zenith angle 27.9°) and 11.6 hours of geometric daylight. That is 0.2 hours shorter than the preceding representative date in this annual sequence.
- 21 December: approximate solar-noon altitude 59.1° (zenith angle 30.9°) and 11.6 hours of geometric daylight. That is 0.1 hours shorter than the preceding representative date in this annual sequence.
Harth calculation for latitude 7.4824°: 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
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Sources and method
Location data from the GeoNames NG dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2338900). Regulatory starting point: Federal Ministry of Housing and Urban Development and the applicable state 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 Ile-Ife establish?
The sun path record for Ile-Ife establishes a reproducible discovery point at 7.4824, 4.5603 (GeoNames ID 2338900, administrative area 42) and a Nigeria 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 Ile-Ife?
For the sun path record in Ile-Ife, replace the 7.4824, 4.5603 city reference with the surveyed site or parcel, identify the competent local authority, and verify the current documents under National Building Code plus state and local development-control requirements. Record the edition, retrieval date, units, assumptions and named checker before relying on the result.
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