Climate & Energy Design Data
Climate Design Data: Jomvu, Kenya
How to research climate design data for a specific site in Jomvu — 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 KE dump](https://download.geonames.org/export/dump/KE.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 195915). Regulatory starting point: [National Construction Authority and the applicable county government](https://www.nca.go.ke/). 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=39.6082&latitude=-3.98623&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 Jomvu reference point reports an annual mean 2 m temperature of 26.2 °C and relative humidity of 74.1%. The highest monthly maximum is 40.0 °C in February, while the lowest monthly minimum is 16.4 °C in July; 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 2.45 mm/day and annual 10 m wind speed is 4.61 m/s. For climate design data, use the 40.0 °C and 16.4 °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 Jomvu?
Jomvu is represented here at approximately -3.9862, 39.6082 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?
- Fix the surveyed site and local time basis.
- Select an authoritative weather source or a named solar-position algorithm.
- Record period, percentile or scenario and units.
- Test sensitivity to elevation, exposure, urban form and horizon.
- 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 climate-design-workflow page is a project-starting worksheet, not a design value or approval. The controlling authority and qualified professionals for the Jomvu 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.
Jomvu NASA POWER monthly climate screening table
| Month | Mean °C | Monthly max °C | Monthly min °C | RH % | Precipitation mm/day | Wind at 10 m m/s |
|---|---|---|---|---|---|---|
| January | 27.95 | 38.15 | 20.43 | 68.95 | 0.79 | 4.32 |
| February | 28.42 | 39.98 | 21.25 | 66.61 | 0.52 | 4.03 |
| March | 28.19 | 39.02 | 21.95 | 71.29 | 1.99 | 3.30 |
| April | 26.89 | 37.16 | 20.39 | 79.09 | 4.30 | 4.01 |
| May | 25.47 | 34.38 | 19.34 | 81.84 | 7.00 | 5.29 |
| June | 24.33 | 31.92 | 17.89 | 78.07 | 2.47 | 5.84 |
| July | 23.93 | 31.40 | 16.37 | 74.57 | 1.15 | 6.01 |
| August | 24.32 | 32.03 | 17.61 | 72.69 | 0.93 | 5.69 |
| September | 25.19 | 33.21 | 18.72 | 71.15 | 1.25 | 5.40 |
| October | 26.07 | 35.65 | 19.68 | 73.26 | 3.15 | 4.46 |
| November | 26.64 | 36.06 | 20.27 | 76.53 | 3.46 | 3.27 |
| December | 27.37 | 37.40 | 21.35 | 74.47 | 2.24 | 3.61 |
Jomvu ranked monthly climate fingerprint
- Jomvu mean temperature, highest to lowest: February 28.42 °C, March 28.19 °C, January 27.95 °C, December 27.37 °C, April 26.89 °C, November 26.64 °C, October 26.07 °C, May 25.47 °C, September 25.19 °C, June 24.33 °C, August 24.32 °C, July 23.93 °C.
- Jomvu monthly maximum, highest to lowest: February 39.98 °C, March 39.02 °C, January 38.15 °C, December 37.40 °C, April 37.16 °C, November 36.06 °C, October 35.65 °C, May 34.38 °C, September 33.21 °C, August 32.03 °C, June 31.92 °C, July 31.40 °C.
- Jomvu monthly minimum, highest to lowest: March 21.95 °C, December 21.35 °C, February 21.25 °C, January 20.43 °C, April 20.39 °C, November 20.27 °C, October 19.68 °C, May 19.34 °C, September 18.72 °C, June 17.89 °C, August 17.61 °C, July 16.37 °C.
- Jomvu relative humidity, highest to lowest: May 81.84 %, April 79.09 %, June 78.07 %, November 76.53 %, July 74.57 %, December 74.47 %, October 73.26 %, August 72.69 %, March 71.29 %, September 71.15 %, January 68.95 %, February 66.61 %.
- Jomvu corrected precipitation, highest to lowest: May 7.00 mm/day, April 4.30 mm/day, November 3.46 mm/day, October 3.15 mm/day, June 2.47 mm/day, December 2.24 mm/day, March 1.99 mm/day, September 1.25 mm/day, July 1.15 mm/day, August 0.93 mm/day, January 0.79 mm/day, February 0.52 mm/day.
- Jomvu 10 m wind speed, highest to lowest: July 6.01 m/s, June 5.84 m/s, August 5.69 m/s, September 5.40 m/s, May 5.29 m/s, October 4.46 m/s, January 4.32 m/s, February 4.03 m/s, April 4.01 m/s, December 3.61 m/s, March 3.30 m/s, November 3.27 m/s.
Jomvu month-to-month screening ledger
- Jomvu January: mean 27.95 °C, change from December +0.58 °C; max–min span 17.72 °C; humidity 68.95%, change -5.52 points; precipitation 0.79 mm/day; wind 4.32 m/s.
- Jomvu February: mean 28.42 °C, change from January +0.47 °C; max–min span 18.73 °C; humidity 66.61%, change -2.34 points; precipitation 0.52 mm/day; wind 4.03 m/s.
- Jomvu March: mean 28.19 °C, change from February -0.23 °C; max–min span 17.07 °C; humidity 71.29%, change +4.68 points; precipitation 1.99 mm/day; wind 3.30 m/s.
- Jomvu April: mean 26.89 °C, change from March -1.30 °C; max–min span 16.77 °C; humidity 79.09%, change +7.80 points; precipitation 4.30 mm/day; wind 4.01 m/s.
- Jomvu May: mean 25.47 °C, change from April -1.42 °C; max–min span 15.04 °C; humidity 81.84%, change +2.75 points; precipitation 7.00 mm/day; wind 5.29 m/s.
- Jomvu June: mean 24.33 °C, change from May -1.14 °C; max–min span 14.03 °C; humidity 78.07%, change -3.77 points; precipitation 2.47 mm/day; wind 5.84 m/s.
- Jomvu July: mean 23.93 °C, change from June -0.40 °C; max–min span 15.03 °C; humidity 74.57%, change -3.50 points; precipitation 1.15 mm/day; wind 6.01 m/s.
- Jomvu August: mean 24.32 °C, change from July +0.39 °C; max–min span 14.42 °C; humidity 72.69%, change -1.88 points; precipitation 0.93 mm/day; wind 5.69 m/s.
- Jomvu September: mean 25.19 °C, change from August +0.87 °C; max–min span 14.49 °C; humidity 71.15%, change -1.54 points; precipitation 1.25 mm/day; wind 5.40 m/s.
- Jomvu October: mean 26.07 °C, change from September +0.88 °C; max–min span 15.97 °C; humidity 73.26%, change +2.11 points; precipitation 3.15 mm/day; wind 4.46 m/s.
- Jomvu November: mean 26.64 °C, change from October +0.57 °C; max–min span 15.79 °C; humidity 76.53%, change +3.27 points; precipitation 3.46 mm/day; wind 3.27 m/s.
- Jomvu December: mean 27.37 °C, change from November +0.73 °C; max–min span 16.05 °C; humidity 74.47%, change -2.06 points; precipitation 2.24 mm/day; wind 3.61 m/s.
Harth retrieved this point climatology from NASA POWER API v2.9.7 for location record 195915. The ranked fingerprint and transition ledger preserve Jomvu'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
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- Climate Design Data: Kilifi, Kenya
- All climate & energy design data guidance for Kenya
- Daylight & Orientation: Jomvu, Kenya
- Solar Altitude & Azimuth: Jomvu, Kenya
- Solar Shading Design: Jomvu, Kenya
- Sun Path: Jomvu, Kenya
Sources and method
Location data from the GeoNames KE dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 195915). 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
Frequently asked questions
What does NASA POWER climatology show for Jomvu?
For the Jomvu reference point, the 2001–2020 NASA POWER climatology reports 26.2 °C annual mean temperature, 74.1% relative humidity and 2.45 mm/day corrected precipitation. The monthly maximum peaks at 40.0 °C in February.
Can the Jomvu climatology replace project design temperatures or an hourly weather file?
No. The Jomvu response is gridded monthly climatology; its lowest monthly minimum of 16.4 °C in July 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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