Climate Design Data: Kiambu, Kenya

Direct answer

NASA POWER's 2001–2020 climatology at the Kiambu reference point reports an annual mean 2 m temperature of 18.8 °C and relative humidity of 70.5%. The highest monthly maximum is 33.9 °C in February, while the lowest monthly minimum is 6.9 °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 2.16 mm/day and annual 10 m wind speed is 3.80 m/s. For climate design data, use the 33.9 °C and 6.9 °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.

Content and cited inputs reviewed by Harth team · Published 2026-08-26 · Updated 2026-08-31.

What are the key takeaways?

• NASA POWER climatology: 20-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2020)
• Annual mean temperature: 18.8 °C
• Highest monthly maximum: 33.9 °C (February)
• Lowest monthly minimum: 6.9 °C (January)

What must be verified for Kiambu?

Kiambu is represented here at approximately -1.1714, 36.8356 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 Kiambu 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.

Kiambu NASA POWER monthly climate screening table

Kiambu ranked monthly climate fingerprint

• Kiambu mean temperature, highest to lowest: March 20.31 °C, February 19.94 °C, October 19.57 °C, April 19.46 °C, September 19.05 °C, January 18.96 °C, November 18.83 °C, December 18.51 °C, May 18.26 °C, August 17.89 °C, June 17.50 °C, July 17.26 °C.
• Kiambu monthly maximum, highest to lowest: February 33.85 °C, March 32.54 °C, April 31.74 °C, October 31.28 °C, September 31.14 °C, January 31.09 °C, December 29.93 °C, August 29.35 °C, November 29.25 °C, May 28.93 °C, July 28.61 °C, June 28.17 °C.
• Kiambu monthly minimum, highest to lowest: April 11.46 °C, October 11.02 °C, November 10.74 °C, March 10.13 °C, May 9.91 °C, September 9.59 °C, December 9.28 °C, February 9.20 °C, June 8.53 °C, August 8.46 °C, July 8.16 °C, January 6.92 °C.
• Kiambu relative humidity, highest to lowest: May 78.16 %, November 76.98 %, April 75.68 %, December 75.42 %, June 75.26 %, July 70.90 %, August 67.79 %, January 67.31 %, October 66.34 %, March 66.05 %, September 63.52 %, February 62.51 %.
• Kiambu corrected precipitation, highest to lowest: April 5.11 mm/day, November 4.09 mm/day, May 2.82 mm/day, December 2.57 mm/day, October 2.47 mm/day, March 2.44 mm/day, January 1.40 mm/day, June 1.15 mm/day, February 1.07 mm/day, August 1.02 mm/day, September 0.94 mm/day, July 0.81 mm/day.
• Kiambu 10 m wind speed, highest to lowest: February 4.55 m/s, November 4.43 m/s, December 4.42 m/s, March 4.36 m/s, January 4.28 m/s, October 4.18 m/s, April 3.86 m/s, September 3.55 m/s, August 3.17 m/s, May 3.14 m/s, July 2.90 m/s, June 2.80 m/s.

Kiambu month-to-month screening ledger

• Kiambu January: mean 18.96 °C, change from December +0.45 °C; max–min span 24.17 °C; humidity 67.31%, change -8.11 points; precipitation 1.40 mm/day; wind 4.28 m/s.
• Kiambu February: mean 19.94 °C, change from January +0.98 °C; max–min span 24.65 °C; humidity 62.51%, change -4.80 points; precipitation 1.07 mm/day; wind 4.55 m/s.
• Kiambu March: mean 20.31 °C, change from February +0.37 °C; max–min span 22.41 °C; humidity 66.05%, change +3.54 points; precipitation 2.44 mm/day; wind 4.36 m/s.
• Kiambu April: mean 19.46 °C, change from March -0.85 °C; max–min span 20.28 °C; humidity 75.68%, change +9.63 points; precipitation 5.11 mm/day; wind 3.86 m/s.
• Kiambu May: mean 18.26 °C, change from April -1.20 °C; max–min span 19.02 °C; humidity 78.16%, change +2.48 points; precipitation 2.82 mm/day; wind 3.14 m/s.
• Kiambu June: mean 17.50 °C, change from May -0.76 °C; max–min span 19.64 °C; humidity 75.26%, change -2.90 points; precipitation 1.15 mm/day; wind 2.80 m/s.
• Kiambu July: mean 17.26 °C, change from June -0.24 °C; max–min span 20.45 °C; humidity 70.90%, change -4.36 points; precipitation 0.81 mm/day; wind 2.90 m/s.
• Kiambu August: mean 17.89 °C, change from July +0.63 °C; max–min span 20.89 °C; humidity 67.79%, change -3.11 points; precipitation 1.02 mm/day; wind 3.17 m/s.
• Kiambu September: mean 19.05 °C, change from August +1.16 °C; max–min span 21.55 °C; humidity 63.52%, change -4.27 points; precipitation 0.94 mm/day; wind 3.55 m/s.
• Kiambu October: mean 19.57 °C, change from September +0.52 °C; max–min span 20.26 °C; humidity 66.34%, change +2.82 points; precipitation 2.47 mm/day; wind 4.18 m/s.
• Kiambu November: mean 18.83 °C, change from October -0.74 °C; max–min span 18.51 °C; humidity 76.98%, change +10.64 points; precipitation 4.09 mm/day; wind 4.43 m/s.
• Kiambu December: mean 18.51 °C, change from November -0.32 °C; max–min span 20.65 °C; humidity 75.42%, change -1.56 points; precipitation 2.57 mm/day; wind 4.42 m/s.

Harth retrieved this point climatology from NASA POWER API v2.9.7 for location record 192710. The ranked fingerprint and transition ledger preserve Kiambu'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: Nairobi, Kenya
• Climate Design Data: Machakos, Kenya
• Climate Design Data: Naivasha, Kenya
• Climate Design Data: Mwala, Kenya
• All climate & energy design data guidance for Kenya
• House Construction Cost Planning: Kiambu, Kenya
• Office Construction Cost Planning: Kiambu, Kenya
• Retail Construction Cost Planning: Kiambu, Kenya
• School Construction Cost Planning: Kiambu, Kenya

Sources and method

Location data from the GeoNames KE dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 192710). Regulatory starting point: National Construction Authority and the applicable county government. 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

• nca.go.ke

• power.larc.nasa.gov

• power.larc.nasa.gov