Climate Design Data: Vanderbijlpark, South Africa

Direct answer

NASA POWER's 2001–2020 climatology at the Vanderbijlpark reference point reports an annual mean 2 m temperature of 17.0 °C and relative humidity of 53.5%. The highest monthly maximum is 39.4 °C in January, while the lowest monthly minimum is -5.7 °C in June; 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 1.60 mm/day and annual 10 m wind speed is 3.64 m/s. For climate design data, use the 39.4 °C and -5.7 °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 Vanderbijlpark?

Vanderbijlpark is represented here at approximately -26.7117, 27.8379 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 Vanderbijlpark 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.

Vanderbijlpark NASA POWER monthly climate screening table

Vanderbijlpark ranked monthly climate fingerprint

• Vanderbijlpark mean temperature, highest to lowest: January 21.90 °C, December 21.69 °C, February 21.59 °C, November 20.86 °C, March 19.98 °C, October 19.94 °C, September 17.28 °C, April 16.59 °C, May 13.05 °C, August 12.81 °C, June 9.63 °C, July 9.47 °C.
• Vanderbijlpark monthly maximum, highest to lowest: January 39.43 °C, December 37.62 °C, November 36.88 °C, October 36.02 °C, February 35.49 °C, March 33.95 °C, September 33.10 °C, April 30.93 °C, August 30.22 °C, May 28.87 °C, July 26.18 °C, June 25.04 °C.
• Vanderbijlpark monthly minimum, highest to lowest: February 7.41 °C, January 7.11 °C, December 6.63 °C, March 5.15 °C, November 4.69 °C, October 2.99 °C, April 0.15 °C, September -2.38 °C, July -5.10 °C, August -5.34 °C, May -5.35 °C, June -5.68 °C.
• Vanderbijlpark relative humidity, highest to lowest: January 62.29 %, February 61.42 %, March 60.63 %, April 60.44 %, December 60.21 %, June 54.62 %, November 53.72 %, May 53.50 %, July 49.37 %, October 46.28 %, August 42.97 %, September 37.47 %.
• Vanderbijlpark corrected precipitation, highest to lowest: December 3.79 mm/day, January 3.45 mm/day, November 2.75 mm/day, February 2.61 mm/day, March 2.10 mm/day, October 1.75 mm/day, April 1.29 mm/day, May 0.50 mm/day, September 0.48 mm/day, August 0.24 mm/day, June 0.24 mm/day, July 0.09 mm/day.
• Vanderbijlpark 10 m wind speed, highest to lowest: September 4.51 m/s, October 4.39 m/s, August 4.32 m/s, November 4.14 m/s, December 3.64 m/s, July 3.56 m/s, June 3.49 m/s, January 3.24 m/s, May 3.18 m/s, April 3.11 m/s, February 3.04 m/s, March 3.01 m/s.

Vanderbijlpark month-to-month screening ledger

• Vanderbijlpark January: mean 21.90 °C, change from December +0.21 °C; max–min span 32.32 °C; humidity 62.29%, change +2.08 points; precipitation 3.45 mm/day; wind 3.24 m/s.
• Vanderbijlpark February: mean 21.59 °C, change from January -0.31 °C; max–min span 28.08 °C; humidity 61.42%, change -0.87 points; precipitation 2.61 mm/day; wind 3.04 m/s.
• Vanderbijlpark March: mean 19.98 °C, change from February -1.61 °C; max–min span 28.80 °C; humidity 60.63%, change -0.79 points; precipitation 2.10 mm/day; wind 3.01 m/s.
• Vanderbijlpark April: mean 16.59 °C, change from March -3.39 °C; max–min span 30.78 °C; humidity 60.44%, change -0.19 points; precipitation 1.29 mm/day; wind 3.11 m/s.
• Vanderbijlpark May: mean 13.05 °C, change from April -3.54 °C; max–min span 34.22 °C; humidity 53.50%, change -6.94 points; precipitation 0.50 mm/day; wind 3.18 m/s.
• Vanderbijlpark June: mean 9.63 °C, change from May -3.42 °C; max–min span 30.72 °C; humidity 54.62%, change +1.12 points; precipitation 0.24 mm/day; wind 3.49 m/s.
• Vanderbijlpark July: mean 9.47 °C, change from June -0.16 °C; max–min span 31.28 °C; humidity 49.37%, change -5.25 points; precipitation 0.09 mm/day; wind 3.56 m/s.
• Vanderbijlpark August: mean 12.81 °C, change from July +3.34 °C; max–min span 35.56 °C; humidity 42.97%, change -6.40 points; precipitation 0.24 mm/day; wind 4.32 m/s.
• Vanderbijlpark September: mean 17.28 °C, change from August +4.47 °C; max–min span 35.48 °C; humidity 37.47%, change -5.50 points; precipitation 0.48 mm/day; wind 4.51 m/s.
• Vanderbijlpark October: mean 19.94 °C, change from September +2.66 °C; max–min span 33.03 °C; humidity 46.28%, change +8.81 points; precipitation 1.75 mm/day; wind 4.39 m/s.
• Vanderbijlpark November: mean 20.86 °C, change from October +0.92 °C; max–min span 32.19 °C; humidity 53.72%, change +7.44 points; precipitation 2.75 mm/day; wind 4.14 m/s.
• Vanderbijlpark December: mean 21.69 °C, change from November +0.83 °C; max–min span 30.99 °C; humidity 60.21%, change +6.49 points; precipitation 3.79 mm/day; wind 3.64 m/s.

Harth retrieved this point climatology from NASA POWER API v2.9.7 for location record 944986. The ranked fingerprint and transition ledger preserve Vanderbijlpark'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: Soweto, South Africa
• Climate Design Data: Carletonville, South Africa
• Climate Design Data: Krugersdorp, South Africa
• Climate Design Data: Alexandra, South Africa
• All climate & energy design data guidance for South Africa
• Sun Path: Vanderbijlpark, South Africa

Sources and method

Location data from the GeoNames ZA dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 944986). Regulatory starting point: South African Bureau of Standards and the local authority. 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

• sabs.co.za

• power.larc.nasa.gov

• power.larc.nasa.gov