Climate Design Data: Yuen Long San Hui, Hong Kong

Direct answer

NASA POWER's 2001–2020 climatology at the Yuen Long San Hui reference point reports an annual mean 2 m temperature of 23.5 °C and relative humidity of 80.2%. The highest monthly maximum is 34.1 °C in August, while the lowest monthly minimum is 3.9 °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 4.03 mm/day and annual 10 m wind speed is 4.47 m/s. For climate design data, use the 34.1 °C and 3.9 °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 Yuen Long San Hui?

Yuen Long San Hui is represented here at approximately 22.4333, 114.0333 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.

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 Yuen Long San Hui site remain authoritative.

Which related searches does this primary location record cover?

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.

Yuen Long San Hui NASA POWER monthly climate screening table

Yuen Long San Hui ranked monthly climate fingerprint

• Yuen Long San Hui mean temperature, highest to lowest: July 28.75 °C, August 28.74 °C, June 28.13 °C, September 27.94 °C, May 26.45 °C, October 25.43 °C, April 23.18 °C, November 21.91 °C, March 20.11 °C, February 17.69 °C, December 17.27 °C, January 16.01 °C.
• Yuen Long San Hui monthly maximum, highest to lowest: August 34.15 °C, July 34.09 °C, May 34.04 °C, June 33.55 °C, September 33.05 °C, October 31.58 °C, November 30.45 °C, April 30.21 °C, March 27.94 °C, December 26.96 °C, February 26.82 °C, January 26.47 °C.
• Yuen Long San Hui monthly minimum, highest to lowest: July 24.82 °C, August 24.79 °C, June 20.80 °C, September 20.04 °C, May 19.15 °C, October 14.64 °C, April 12.94 °C, November 9.25 °C, March 7.84 °C, February 6.03 °C, December 5.01 °C, January 3.90 °C.
• Yuen Long San Hui relative humidity, highest to lowest: June 87.02 %, May 85.33 %, July 85.24 %, August 84.41 %, April 83.34 %, September 81.40 %, March 80.78 %, February 79.08 %, October 75.74 %, November 74.82 %, January 74.50 %, December 71.23 %.
• Yuen Long San Hui corrected precipitation, highest to lowest: June 9.60 mm/day, August 7.55 mm/day, May 7.46 mm/day, July 6.35 mm/day, September 5.76 mm/day, April 3.63 mm/day, March 2.23 mm/day, October 1.79 mm/day, January 1.14 mm/day, February 1.04 mm/day, November 0.98 mm/day, December 0.69 mm/day.
• Yuen Long San Hui 10 m wind speed, highest to lowest: December 5.14 m/s, January 4.81 m/s, February 4.68 m/s, November 4.68 m/s, March 4.58 m/s, June 4.47 m/s, July 4.46 m/s, October 4.40 m/s, April 4.38 m/s, May 4.14 m/s, September 4.06 m/s, August 3.87 m/s.

Yuen Long San Hui month-to-month screening ledger

• Yuen Long San Hui January: mean 16.01 °C, change from December -1.26 °C; max–min span 22.57 °C; humidity 74.50%, change +3.27 points; precipitation 1.14 mm/day; wind 4.81 m/s.
• Yuen Long San Hui February: mean 17.69 °C, change from January +1.68 °C; max–min span 20.79 °C; humidity 79.08%, change +4.58 points; precipitation 1.04 mm/day; wind 4.68 m/s.
• Yuen Long San Hui March: mean 20.11 °C, change from February +2.42 °C; max–min span 20.10 °C; humidity 80.78%, change +1.70 points; precipitation 2.23 mm/day; wind 4.58 m/s.
• Yuen Long San Hui April: mean 23.18 °C, change from March +3.07 °C; max–min span 17.27 °C; humidity 83.34%, change +2.56 points; precipitation 3.63 mm/day; wind 4.38 m/s.
• Yuen Long San Hui May: mean 26.45 °C, change from April +3.27 °C; max–min span 14.89 °C; humidity 85.33%, change +1.99 points; precipitation 7.46 mm/day; wind 4.14 m/s.
• Yuen Long San Hui June: mean 28.13 °C, change from May +1.68 °C; max–min span 12.75 °C; humidity 87.02%, change +1.69 points; precipitation 9.60 mm/day; wind 4.47 m/s.
• Yuen Long San Hui July: mean 28.75 °C, change from June +0.62 °C; max–min span 9.27 °C; humidity 85.24%, change -1.78 points; precipitation 6.35 mm/day; wind 4.46 m/s.
• Yuen Long San Hui August: mean 28.74 °C, change from July -0.01 °C; max–min span 9.36 °C; humidity 84.41%, change -0.83 points; precipitation 7.55 mm/day; wind 3.87 m/s.
• Yuen Long San Hui September: mean 27.94 °C, change from August -0.80 °C; max–min span 13.01 °C; humidity 81.40%, change -3.01 points; precipitation 5.76 mm/day; wind 4.06 m/s.
• Yuen Long San Hui October: mean 25.43 °C, change from September -2.51 °C; max–min span 16.94 °C; humidity 75.74%, change -5.66 points; precipitation 1.79 mm/day; wind 4.40 m/s.
• Yuen Long San Hui November: mean 21.91 °C, change from October -3.52 °C; max–min span 21.20 °C; humidity 74.82%, change -0.92 points; precipitation 0.98 mm/day; wind 4.68 m/s.
• Yuen Long San Hui December: mean 17.27 °C, change from November -4.64 °C; max–min span 21.95 °C; humidity 71.23%, change -3.59 points; precipitation 0.69 mm/day; wind 5.14 m/s.

Harth retrieved this point climatology from NASA POWER API v2.9.7 for location record 1818222. The ranked fingerprint and transition ledger preserve Yuen Long San Hui'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.

Where can you explore related guidance?

• Explore all climate data guidance
• Climate Design Data: Ping Shan, Hong Kong
• Climate Design Data: Kai Tak, Hong Kong
• Climate Design Data: Aberdeen, Hong Kong
• Climate Design Data: Hong Kong Island, Hong Kong
• All climate & energy design data guidance for Hong Kong
• Daylight & Orientation: Yuen Long San Hui, Hong Kong
• Solar Altitude & Azimuth: Yuen Long San Hui, Hong Kong
• Solar Shading Design: Yuen Long San Hui, Hong Kong
• Sun Path: Yuen Long San Hui, Hong Kong

Sources and method

Location data from the GeoNames HK dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 1818222). 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.

Source links

• download.geonames.org

• bd.gov.hk

• power.larc.nasa.gov

• power.larc.nasa.gov