# Daylight & Orientation: Jumayrā, UAE

> How to research daylight & orientation for a specific site in Jumayrā — the controlling authority, source documents, and checks to run before you rely on a number.

- Canonical: https://harth.build/resources/solar-data/daylight-orientation-jumayr-ae/
- Last updated: 2026-09-02
- Data source: Location data from the [GeoNames AE dump](https://download.geonames.org/export/dump/AE.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 291775). Regulatory starting point: [UAE Government overview of local building authorities](https://u.ae/en/information-and-services/justice-safety-and-the-law/building-safety). 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. Project-date refinement reference: [NREL Solar Position Algorithm](https://midcdmz.nrel.gov/spa/).

## Key facts

| Fact | Value |
| --- | --- |
| Location reference | 25.2080, 55.2497 (GeoNames ID 291775; replace with surveyed project coordinates) |
| Administrative area | 03 (GeoNames snapshot code; confirm the competent local jurisdiction) |
| Regulatory starting point | emirate- and municipality-specific building regulations and permit systems (country-level context only; identify the competent local authority) |
| June-solstice solar-noon check | 88.2° (declination-only geometry; not an hourly obstruction model) |
| Equinox solar-noon check | 64.8° (declination-only geometry) |
| December-solstice solar-noon check | 41.4° (declination-only geometry; verify civil time and horizon) |
| Approximate daylight range | 10.4–13.6 hours (representative 21st-day geometry (December to June); excludes refraction and terrain) |

## Direct answer

For Jumayrā at 25.2080, 55.2497, the declination-only solar-noon altitude is approximately 88.2° at the June solstice, 64.8° at an equinox and 41.4° 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 291775 in administrative area 03, at 25.2080, 55.2497; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 88.2° at the June solstice, 64.8° at an equinox and 41.4° at the December solstice. Representative 21st-day geometry ranges from about 10.4 hours in December to 13.6 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 daylight and building orientation record.

*Content and cited inputs reviewed by [Scott Barrington](https://nz.linkedin.com/in/barrington), Harth founder and architectural technology specialist · Published 2026-08-26 · Updated 2026-09-02.*

## What must be verified for Jumayrā?

Jumayrā is represented here at approximately **25.2080, 55.2497** 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 daylight and building orientation 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.

| 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 daylight-workflow page is a project-starting worksheet, not a design value or approval. The controlling authority and qualified professionals for the Jumayrā site remain authoritative.

## Jumayrā monthly solar geometry check for daylight & orientation

| Representative date | Declination | Solar-noon altitude | Geometric daylight | Noon shadow / height |
| --- | ---: | ---: | ---: | ---: |
| 21 January | -20.14° | 44.65° | 10.675 h | 1.012 |
| 21 February | -11.23° | 53.57° | 11.285 h | 0.738 |
| 21 March | -0.40° | 64.39° | 11.975 h | 0.479 |
| 21 April | +11.58° | 76.37° | 12.738 h | 0.242 |
| 21 May | +20.14° | 84.93° | 13.325 h | 0.089 |
| 21 June | +23.45° | 88.24° | 13.571 h | 0.031 |
| 21 July | +20.44° | 85.23° | 13.347 h | 0.083 |
| 21 August | +11.75° | 76.55° | 12.749 h | 0.239 |
| 21 September | -0.20° | 64.59° | 11.987 h | 0.475 |
| 21 October | -11.75° | 53.04° | 11.251 h | 0.753 |
| 21 November | -20.44° | 44.35° | 10.653 h | 1.023 |
| 21 December | -23.45° | 41.34° | 10.429 h | 1.137 |

## Jumayrā solar-geometry fingerprint at 25.2080, 55.2497

- **Jumayrā, 21 January:** declination -20.14°, noon altitude 44.65°, zenith 45.35°, geometric daylight 10.675 hours, and vertical-object noon shadow ratio 1.012.
- **Jumayrā, 21 February:** declination -11.23°, noon altitude 53.57°, zenith 36.43°, geometric daylight 11.285 hours, and vertical-object noon shadow ratio 0.738.
- **Jumayrā, 21 March:** declination -0.40°, noon altitude 64.39°, zenith 25.61°, geometric daylight 11.975 hours, and vertical-object noon shadow ratio 0.479.
- **Jumayrā, 21 April:** declination +11.58°, noon altitude 76.37°, zenith 13.63°, geometric daylight 12.738 hours, and vertical-object noon shadow ratio 0.242.
- **Jumayrā, 21 May:** declination +20.14°, noon altitude 84.93°, zenith 5.07°, geometric daylight 13.325 hours, and vertical-object noon shadow ratio 0.089.
- **Jumayrā, 21 June:** declination +23.45°, noon altitude 88.24°, zenith 1.76°, geometric daylight 13.571 hours, and vertical-object noon shadow ratio 0.031.
- **Jumayrā, 21 July:** declination +20.44°, noon altitude 85.23°, zenith 4.77°, geometric daylight 13.347 hours, and vertical-object noon shadow ratio 0.083.
- **Jumayrā, 21 August:** declination +11.75°, noon altitude 76.55°, zenith 13.45°, geometric daylight 12.749 hours, and vertical-object noon shadow ratio 0.239.
- **Jumayrā, 21 September:** declination -0.20°, noon altitude 64.59°, zenith 25.41°, geometric daylight 11.987 hours, and vertical-object noon shadow ratio 0.475.
- **Jumayrā, 21 October:** declination -11.75°, noon altitude 53.04°, zenith 36.96°, geometric daylight 11.251 hours, and vertical-object noon shadow ratio 0.753.
- **Jumayrā, 21 November:** declination -20.44°, noon altitude 44.35°, zenith 45.65°, geometric daylight 10.653 hours, and vertical-object noon shadow ratio 1.023.
- **Jumayrā, 21 December:** declination -23.45°, noon altitude 41.34°, zenith 48.66°, geometric daylight 10.429 hours, and vertical-object noon shadow ratio 1.137.

Harth computed the Jumayrā fingerprint for latitude 25.2080° with the Cooper declination approximation, `90° - |latitude - declination|` at solar noon, centre-to-centre sunrise hour angle and `1 / tan(altitude)` shadow ratio. Longitude 55.2497° is retained for a later civil-time conversion; this screen does not perform that conversion. See [NOAA's solar calculation details](https://gml.noaa.gov/grad/solcalc/calcdetails.html). Atmospheric refraction, terrain, facade azimuth and obstructions remain outside this first-pass comparison.

## Where can you explore related guidance?

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- [Daylight & Orientation: Dubai Festival City, UAE](https://harth.build/resources/solar-data/daylight-orientation-dubai-festival-city-ae.md)
- [Sun Path: Al Karama, UAE](https://harth.build/resources/solar-data/sun-path-al-karama-ae.md)
- [Solar Altitude & Azimuth: Al Karama, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-al-karama-ae.md)
- [Solar Shading Design: Al Karama, UAE](https://harth.build/resources/solar-data/solar-shading-design-al-karama-ae.md)
- [Daylight & Orientation: Al Karama, UAE](https://harth.build/resources/solar-data/daylight-orientation-al-karama-ae.md)
- [Sun Path: Zayed City, UAE](https://harth.build/resources/solar-data/sun-path-zayed-city-ae.md)
- [Solar Altitude & Azimuth: Zayed City, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-zayed-city-ae.md)
- [Solar Shading Design: Zayed City, UAE](https://harth.build/resources/solar-data/solar-shading-design-zayed-city-ae.md)
- [Daylight & Orientation: Zayed City, UAE](https://harth.build/resources/solar-data/daylight-orientation-zayed-city-ae.md)
- [Sun Path: Al Shamkhah City, UAE](https://harth.build/resources/solar-data/sun-path-al-shamkhah-city-ae.md)
- [Solar Altitude & Azimuth: Al Shamkhah City, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-al-shamkhah-city-ae.md)
- [Solar Shading Design: Al Shamkhah City, UAE](https://harth.build/resources/solar-data/solar-shading-design-al-shamkhah-city-ae.md)
- [Daylight & Orientation: Al Shamkhah City, UAE](https://harth.build/resources/solar-data/daylight-orientation-al-shamkhah-city-ae.md)
- [Sun Path: Mirdif, UAE](https://harth.build/resources/solar-data/sun-path-mirdif-ae.md)
- [Solar Altitude & Azimuth: Mirdif, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-mirdif-ae.md)
- [Solar Shading Design: Mirdif, UAE](https://harth.build/resources/solar-data/solar-shading-design-mirdif-ae.md)
- [Daylight & Orientation: Mirdif, UAE](https://harth.build/resources/solar-data/daylight-orientation-mirdif-ae.md)
- [Sun Path: Al Warqaa, UAE](https://harth.build/resources/solar-data/sun-path-al-warqaa-ae.md)
- [Solar Altitude & Azimuth: Al Warqaa, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-al-warqaa-ae.md)
- [Solar Shading Design: Al Warqaa, UAE](https://harth.build/resources/solar-data/solar-shading-design-al-warqaa-ae.md)
- [Daylight & Orientation: Al Warqaa, UAE](https://harth.build/resources/solar-data/daylight-orientation-al-warqaa-ae.md)
- [Sun Path: Umm Al Quwain City, UAE](https://harth.build/resources/solar-data/sun-path-umm-al-quwain-city-ae.md)
- [Solar Altitude & Azimuth: Umm Al Quwain City, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-umm-al-quwain-city-ae.md)
- [Solar Shading Design: Umm Al Quwain City, UAE](https://harth.build/resources/solar-data/solar-shading-design-umm-al-quwain-city-ae.md)
- [Daylight & Orientation: Umm Al Quwain City, UAE](https://harth.build/resources/solar-data/daylight-orientation-umm-al-quwain-city-ae.md)
- [Sun Path: Al Sajaah, UAE](https://harth.build/resources/solar-data/sun-path-al-sajaah-ae.md)
- [Solar Altitude & Azimuth: Al Sajaah, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-al-sajaah-ae.md)
- [Solar Shading Design: Al Sajaah, UAE](https://harth.build/resources/solar-data/solar-shading-design-al-sajaah-ae.md)
- [Daylight & Orientation: Al Sajaah, UAE](https://harth.build/resources/solar-data/daylight-orientation-al-sajaah-ae.md)
- [Sun Path: Lahbab, UAE](https://harth.build/resources/solar-data/sun-path-lahbab-ae.md)
- [Solar Altitude & Azimuth: Lahbab, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-lahbab-ae.md)
- [Solar Shading Design: Lahbab, UAE](https://harth.build/resources/solar-data/solar-shading-design-lahbab-ae.md)
- [Daylight & Orientation: Lahbab, UAE](https://harth.build/resources/solar-data/daylight-orientation-lahbab-ae.md)
- [Sun Path: Ţarīf Kalbā, UAE](https://harth.build/resources/solar-data/sun-path-ar-f-kalb-ae.md)
- [Solar Altitude & Azimuth: Ţarīf Kalbā, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-ar-f-kalb-ae.md)
- [Solar Shading Design: Ţarīf Kalbā, UAE](https://harth.build/resources/solar-data/solar-shading-design-ar-f-kalb-ae.md)
- [Daylight & Orientation: Ţarīf Kalbā, UAE](https://harth.build/resources/solar-data/daylight-orientation-ar-f-kalb-ae.md)
- [Sun Path: Al Muteena, UAE](https://harth.build/resources/solar-data/sun-path-al-muteena-ae.md)
- [Solar Altitude & Azimuth: Al Muteena, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-al-muteena-ae.md)
- [Solar Shading Design: Al Muteena, UAE](https://harth.build/resources/solar-data/solar-shading-design-al-muteena-ae.md)
- [Daylight & Orientation: Al Muteena, UAE](https://harth.build/resources/solar-data/daylight-orientation-al-muteena-ae.md)
- [Sun Path: Al Qusais 1, UAE](https://harth.build/resources/solar-data/sun-path-al-qusais-1-ae.md)
- [Solar Altitude & Azimuth: Al Qusais 1, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-al-qusais-1-ae.md)
- [Solar Shading Design: Al Qusais 1, UAE](https://harth.build/resources/solar-data/solar-shading-design-al-qusais-1-ae.md)
- [Daylight & Orientation: Al Qusais 1, UAE](https://harth.build/resources/solar-data/daylight-orientation-al-qusais-1-ae.md)
- [Sun Path: Mankhūl, UAE](https://harth.build/resources/solar-data/sun-path-mankh-l-ae.md)
- [Solar Altitude & Azimuth: Mankhūl, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-mankh-l-ae.md)
- [Solar Shading Design: Mankhūl, UAE](https://harth.build/resources/solar-data/solar-shading-design-mankh-l-ae.md)
- [Daylight & Orientation: Mankhūl, UAE](https://harth.build/resources/solar-data/daylight-orientation-mankh-l-ae.md)
- [Sun Path: As Saţwah, UAE](https://harth.build/resources/solar-data/sun-path-as-sa-wah-ae.md)
- [Solar Altitude & Azimuth: As Saţwah, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-as-sa-wah-ae.md)
- [Solar Shading Design: As Saţwah, UAE](https://harth.build/resources/solar-data/solar-shading-design-as-sa-wah-ae.md)
- [Daylight & Orientation: As Saţwah, UAE](https://harth.build/resources/solar-data/daylight-orientation-as-sa-wah-ae.md)
- [Sun Path: Khawr Fakkān, UAE](https://harth.build/resources/solar-data/sun-path-khawr-fakk-n-ae.md)
- [Solar Altitude & Azimuth: Khawr Fakkān, UAE](https://harth.build/resources/solar-data/solar-altitude-azimuth-khawr-fakk-n-ae.md)
- [Solar Shading Design: Khawr Fakkān, UAE](https://harth.build/resources/solar-data/solar-shading-design-khawr-fakk-n-ae.md)
- [Daylight & Orientation: Khawr Fakkān, UAE](https://harth.build/resources/solar-data/daylight-orientation-khawr-fakk-n-ae.md)
- [All solar & daylight data guidance for United Arab Emirates](https://harth.build/resources/solar-data/united-arab-emirates.md)
- [House Construction Cost Planning: Jumayrā, United Arab Emirates](https://harth.build/resources/construction-costs/house-construction-cost-jumayr-ae.md)
- [Office Construction Cost Planning: Jumayrā, United Arab Emirates](https://harth.build/resources/construction-costs/office-construction-cost-jumayr-ae.md)
- [Retail Construction Cost Planning: Jumayrā, United Arab Emirates](https://harth.build/resources/construction-costs/retail-construction-cost-jumayr-ae.md)
- [School Construction Cost Planning: Jumayrā, United Arab Emirates](https://harth.build/resources/construction-costs/school-construction-cost-jumayr-ae.md)

## Sources and method

Location data from the [GeoNames AE dump](https://download.geonames.org/export/dump/AE.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 291775). Regulatory starting point: [UAE Government overview of local building authorities](https://u.ae/en/information-and-services/justice-safety-and-the-law/building-safety). 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. Project-date refinement reference: [NREL Solar Position Algorithm](https://midcdmz.nrel.gov/spa/).

### Source links

- [download.geonames.org](https://download.geonames.org/export/dump/AE.zip)

- [u.ae](https://u.ae/en/information-and-services/justice-safety-and-the-law/building-safety)

- [gml.noaa.gov](https://gml.noaa.gov/grad/solcalc/calcdetails.html)

- [midcdmz.nrel.gov](https://midcdmz.nrel.gov/spa/)

## Frequently asked questions

### What does the daylight and building orientation record for Jumayrā establish?

The daylight and building orientation record for Jumayrā establishes a reproducible discovery point at 25.2080, 55.2497 (GeoNames ID 291775, administrative area 03) and a United Arab Emirates source path. It does not establish a final project value, approval or parcel decision.

### What must be replaced before using this daylight and building orientation workflow for a project in Jumayrā?

For the daylight and building orientation record in Jumayrā, replace the 25.2080, 55.2497 city reference with the surveyed site or parcel, identify the competent local authority, and verify the current documents under emirate- and municipality-specific building regulations and permit systems. Record the edition, retrieval date, units, assumptions and named checker before relying on the result.

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