Climate & Energy Design Data

Updated 2026-08-31

Climate Design Data: Kai Tak, Hong Kong

How to research climate design data for a specific site in Kai Tak — 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 HK dump](https://download.geonames.org/export/dump/HK.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 12640684). Regulatory starting point: [Hong Kong Buildings Department](https://www.bd.gov.hk/en/resources/codes-and-references/codes-and-design-manuals/index.html). Figures are illustrative — verify against the current locally adopted edition for the site. Climate screening data from the [NASA POWER Climatology API documentation](https://power.larc.nasa.gov/docs/services/api/temporal/climatology/) and [exact point response](https://power.larc.nasa.gov/api/temporal/climatology/point?parameters=T2M%2CT2M_MAX%2CT2M_MIN%2CRH2M%2CPRECTOTCORR%2CWS10M&community=SB&longitude=114.19741&latitude=22.32425&format=JSON), retrieved 2026-08-31; source period: 20-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2020). NASA POWER values are gridded screening statistics, not code design conditions or guaranteed local observations.

Direct answer

NASA POWER's 2001–2020 climatology at the Kai Tak reference point reports an annual mean 2 m temperature of 23.4 °C and relative humidity of 79.3%. The highest monthly maximum is 35.6 °C in July, while the lowest monthly minimum is 2.8 °C in January; these are screening statistics, not code design temperatures. The point response uses LST and the 20-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2020); its annual corrected precipitation is 3.83 mm/day and annual 10 m wind speed is 4.49 m/s. For climate design data, use the 35.6 °C and 2.8 °C monthly extrema to screen seasonal exposure, then obtain the adopted percentile design conditions. NASA POWER is gridded climatology: verify elevation, microclimate, urban exposure, station or weather-file suitability, current code edition and the authority's required source before design use.

Prepared by Harth · Harth transformed the cited NASA POWER climatology into this screening table; project design conditions and local applicability remain unreviewed · Published 2026-08-26 · Updated 2026-08-31.

What must be verified for Kai Tak?

Kai Tak is represented here at approximately 22.3242, 114.1974 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 climate design data 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.
InputProject-specific evidenceQA question
Sitesurveyed coordinates, elevation and horizonDoes the point represent the building?
Weather/solar methodnamed dataset, algorithm, period and time basisAre station, time zone and units explicit?
Design scenariocurrent and future scenario agreed by the teamIs an average being mistaken for an extreme?
Complianceadopted local document and editionWas applicability confirmed with the authority?

What are the limits of this worksheet?

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

This primary route consolidates the location evidence needed for Climate Design Data, Weather File Guide, Overheating Weather Data, Building Climate Checklist. A narrower route should be released only when it adds a materially different official source, calculation, process, threshold or worked example.

Kai Tak NASA POWER monthly climate screening table

MonthMean °CMonthly max °CMonthly min °CRH %Precipitation mm/dayWind at 10 m m/s
January16.0026.812.7673.581.164.94
February17.8227.955.3777.541.024.80
March20.2329.276.8878.782.324.66
April23.2731.7712.3581.193.454.32
May26.3034.5318.3883.966.764.02
June27.9334.2720.5285.989.404.39
July28.5435.6223.9484.525.974.32
August28.4333.9824.1784.327.033.76
September27.6433.9420.5281.155.354.03
October25.0932.1813.8875.631.594.54
November21.6330.898.5474.671.014.87
December17.1427.363.6370.860.825.28

Kai Tak ranked monthly climate fingerprint

  • Kai Tak mean temperature, highest to lowest: July 28.54 °C, August 28.43 °C, June 27.93 °C, September 27.64 °C, May 26.30 °C, October 25.09 °C, April 23.27 °C, November 21.63 °C, March 20.23 °C, February 17.82 °C, December 17.14 °C, January 16.00 °C.
  • Kai Tak monthly maximum, highest to lowest: July 35.62 °C, May 34.53 °C, June 34.27 °C, August 33.98 °C, September 33.94 °C, October 32.18 °C, April 31.77 °C, November 30.89 °C, March 29.27 °C, February 27.95 °C, December 27.36 °C, January 26.81 °C.
  • Kai Tak monthly minimum, highest to lowest: August 24.17 °C, July 23.94 °C, June 20.52 °C, September 20.52 °C, May 18.38 °C, October 13.88 °C, April 12.35 °C, November 8.54 °C, March 6.88 °C, February 5.37 °C, December 3.63 °C, January 2.76 °C.
  • Kai Tak relative humidity, highest to lowest: June 85.98 %, July 84.52 %, August 84.32 %, May 83.96 %, April 81.19 %, September 81.15 %, March 78.78 %, February 77.54 %, October 75.63 %, November 74.67 %, January 73.58 %, December 70.86 %.
  • Kai Tak corrected precipitation, highest to lowest: June 9.40 mm/day, August 7.03 mm/day, May 6.76 mm/day, July 5.97 mm/day, September 5.35 mm/day, April 3.45 mm/day, March 2.32 mm/day, October 1.59 mm/day, January 1.16 mm/day, February 1.02 mm/day, November 1.01 mm/day, December 0.82 mm/day.
  • Kai Tak 10 m wind speed, highest to lowest: December 5.28 m/s, January 4.94 m/s, November 4.87 m/s, February 4.80 m/s, March 4.66 m/s, October 4.54 m/s, June 4.39 m/s, April 4.32 m/s, July 4.32 m/s, September 4.03 m/s, May 4.02 m/s, August 3.76 m/s.

Kai Tak month-to-month screening ledger

  • Kai Tak January: mean 16.00 °C, change from December -1.14 °C; max–min span 24.05 °C; humidity 73.58%, change +2.72 points; precipitation 1.16 mm/day; wind 4.94 m/s.
  • Kai Tak February: mean 17.82 °C, change from January +1.82 °C; max–min span 22.58 °C; humidity 77.54%, change +3.96 points; precipitation 1.02 mm/day; wind 4.80 m/s.
  • Kai Tak March: mean 20.23 °C, change from February +2.41 °C; max–min span 22.39 °C; humidity 78.78%, change +1.24 points; precipitation 2.32 mm/day; wind 4.66 m/s.
  • Kai Tak April: mean 23.27 °C, change from March +3.04 °C; max–min span 19.42 °C; humidity 81.19%, change +2.41 points; precipitation 3.45 mm/day; wind 4.32 m/s.
  • Kai Tak May: mean 26.30 °C, change from April +3.03 °C; max–min span 16.15 °C; humidity 83.96%, change +2.77 points; precipitation 6.76 mm/day; wind 4.02 m/s.
  • Kai Tak June: mean 27.93 °C, change from May +1.63 °C; max–min span 13.75 °C; humidity 85.98%, change +2.02 points; precipitation 9.40 mm/day; wind 4.39 m/s.
  • Kai Tak July: mean 28.54 °C, change from June +0.61 °C; max–min span 11.68 °C; humidity 84.52%, change -1.46 points; precipitation 5.97 mm/day; wind 4.32 m/s.
  • Kai Tak August: mean 28.43 °C, change from July -0.11 °C; max–min span 9.81 °C; humidity 84.32%, change -0.20 points; precipitation 7.03 mm/day; wind 3.76 m/s.
  • Kai Tak September: mean 27.64 °C, change from August -0.79 °C; max–min span 13.42 °C; humidity 81.15%, change -3.17 points; precipitation 5.35 mm/day; wind 4.03 m/s.
  • Kai Tak October: mean 25.09 °C, change from September -2.55 °C; max–min span 18.30 °C; humidity 75.63%, change -5.52 points; precipitation 1.59 mm/day; wind 4.54 m/s.
  • Kai Tak November: mean 21.63 °C, change from October -3.46 °C; max–min span 22.35 °C; humidity 74.67%, change -0.96 points; precipitation 1.01 mm/day; wind 4.87 m/s.
  • Kai Tak December: mean 17.14 °C, change from November -4.49 °C; max–min span 23.73 °C; humidity 70.86%, change -3.81 points; precipitation 0.82 mm/day; wind 5.28 m/s.

Harth retrieved this point climatology from NASA POWER API v2.9.7 for location record 12640684. The ranked fingerprint and transition ledger preserve Kai Tak's monthly order and successive changes for source comparison. This is a reproducible screening dataset, not an hourly weather file, forecast, code design condition or substitute for local professional review.

Sources and method

Location data from the GeoNames HK dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 12640684). Regulatory starting point: Hong Kong Buildings Department. Figures are illustrative — verify against the current locally adopted edition for the site. Climate screening data from the NASA POWER Climatology API documentation and exact point response, retrieved 2026-08-31; source period: 20-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2020). NASA POWER values are gridded screening statistics, not code design conditions or guaranteed local observations.

Frequently asked questions

What does NASA POWER climatology show for Kai Tak?

For the Kai Tak reference point, the 2001–2020 NASA POWER climatology reports 23.4 °C annual mean temperature, 79.3% relative humidity and 3.83 mm/day corrected precipitation. The monthly maximum peaks at 35.6 °C in July.

Can the Kai Tak climatology replace project design temperatures or an hourly weather file?

No. The Kai Tak response is gridded monthly climatology; its lowest monthly minimum of 2.8 °C in January is not a code percentile or observed site extreme. Verify elevation, local exposure, the required weather file or design-condition source and the current adopted code.

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