Climate & Energy Design Data

Updated 2026-08-31

Climate Design Data: Leicester, UK

How to research climate design data for a specific site in Leicester — 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 GB dump](https://download.geonames.org/export/dump/GB.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2644668). Regulatory starting point: [UK and devolved building-control authorities](https://www.gov.uk/government/collections/approved-documents). 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=-1.13169&latitude=52.6386&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 Leicester reference point reports an annual mean 2 m temperature of 9.6 °C and relative humidity of 86.5%. The highest monthly maximum is 32.6 °C in July, while the lowest monthly minimum is -9.2 °C in February; 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 2.05 mm/day and annual 10 m wind speed is 4.95 m/s. For climate design data, use the 32.6 °C and -9.2 °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 Leicester?

Leicester is represented here at approximately 52.6386, -1.1317 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 Leicester 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.

Leicester NASA POWER monthly climate screening table

MonthMean °CMonthly max °CMonthly min °CRH %Precipitation mm/dayWind at 10 m m/s
January3.5713.06-7.4494.322.035.75
February3.7416.46-9.1691.371.845.64
March5.5019.11-5.9986.681.655.28
April8.3523.74-3.9782.721.544.65
May11.5425.99-0.7680.531.934.64
June14.6628.743.1980.292.204.29
July16.5432.626.5779.752.314.26
August16.1430.625.1681.342.364.47
September13.6427.993.1983.791.704.62
October10.3526.28-3.4788.962.445.21
November6.5318.34-5.1993.682.345.21
December4.1814.06-7.6095.412.205.44

Leicester ranked monthly climate fingerprint

  • Leicester mean temperature, highest to lowest: July 16.54 °C, August 16.14 °C, June 14.66 °C, September 13.64 °C, May 11.54 °C, October 10.35 °C, April 8.35 °C, November 6.53 °C, March 5.50 °C, December 4.18 °C, February 3.74 °C, January 3.57 °C.
  • Leicester monthly maximum, highest to lowest: July 32.62 °C, August 30.62 °C, June 28.74 °C, September 27.99 °C, October 26.28 °C, May 25.99 °C, April 23.74 °C, March 19.11 °C, November 18.34 °C, February 16.46 °C, December 14.06 °C, January 13.06 °C.
  • Leicester monthly minimum, highest to lowest: July 6.57 °C, August 5.16 °C, June 3.19 °C, September 3.19 °C, May -0.76 °C, October -3.47 °C, April -3.97 °C, November -5.19 °C, March -5.99 °C, January -7.44 °C, December -7.60 °C, February -9.16 °C.
  • Leicester relative humidity, highest to lowest: December 95.41 %, January 94.32 %, November 93.68 %, February 91.37 %, October 88.96 %, March 86.68 %, September 83.79 %, April 82.72 %, August 81.34 %, May 80.53 %, June 80.29 %, July 79.75 %.
  • Leicester corrected precipitation, highest to lowest: October 2.44 mm/day, August 2.36 mm/day, November 2.34 mm/day, July 2.31 mm/day, December 2.20 mm/day, June 2.20 mm/day, January 2.03 mm/day, May 1.93 mm/day, February 1.84 mm/day, September 1.70 mm/day, March 1.65 mm/day, April 1.54 mm/day.
  • Leicester 10 m wind speed, highest to lowest: January 5.75 m/s, February 5.64 m/s, December 5.44 m/s, March 5.28 m/s, November 5.21 m/s, October 5.21 m/s, April 4.65 m/s, May 4.64 m/s, September 4.62 m/s, August 4.47 m/s, June 4.29 m/s, July 4.26 m/s.

Leicester month-to-month screening ledger

  • Leicester January: mean 3.57 °C, change from December -0.61 °C; max–min span 20.50 °C; humidity 94.32%, change -1.09 points; precipitation 2.03 mm/day; wind 5.75 m/s.
  • Leicester February: mean 3.74 °C, change from January +0.17 °C; max–min span 25.62 °C; humidity 91.37%, change -2.95 points; precipitation 1.84 mm/day; wind 5.64 m/s.
  • Leicester March: mean 5.50 °C, change from February +1.76 °C; max–min span 25.10 °C; humidity 86.68%, change -4.69 points; precipitation 1.65 mm/day; wind 5.28 m/s.
  • Leicester April: mean 8.35 °C, change from March +2.85 °C; max–min span 27.71 °C; humidity 82.72%, change -3.96 points; precipitation 1.54 mm/day; wind 4.65 m/s.
  • Leicester May: mean 11.54 °C, change from April +3.19 °C; max–min span 26.75 °C; humidity 80.53%, change -2.19 points; precipitation 1.93 mm/day; wind 4.64 m/s.
  • Leicester June: mean 14.66 °C, change from May +3.12 °C; max–min span 25.55 °C; humidity 80.29%, change -0.24 points; precipitation 2.20 mm/day; wind 4.29 m/s.
  • Leicester July: mean 16.54 °C, change from June +1.88 °C; max–min span 26.05 °C; humidity 79.75%, change -0.54 points; precipitation 2.31 mm/day; wind 4.26 m/s.
  • Leicester August: mean 16.14 °C, change from July -0.40 °C; max–min span 25.46 °C; humidity 81.34%, change +1.59 points; precipitation 2.36 mm/day; wind 4.47 m/s.
  • Leicester September: mean 13.64 °C, change from August -2.50 °C; max–min span 24.80 °C; humidity 83.79%, change +2.45 points; precipitation 1.70 mm/day; wind 4.62 m/s.
  • Leicester October: mean 10.35 °C, change from September -3.29 °C; max–min span 29.75 °C; humidity 88.96%, change +5.17 points; precipitation 2.44 mm/day; wind 5.21 m/s.
  • Leicester November: mean 6.53 °C, change from October -3.82 °C; max–min span 23.53 °C; humidity 93.68%, change +4.72 points; precipitation 2.34 mm/day; wind 5.21 m/s.
  • Leicester December: mean 4.18 °C, change from November -2.35 °C; max–min span 21.66 °C; humidity 95.41%, change +1.73 points; precipitation 2.20 mm/day; wind 5.44 m/s.

Harth retrieved this point climatology from NASA POWER API v2.9.7 for location record 2644668. The ranked fingerprint and transition ledger preserve Leicester'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 GB dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2644668). Regulatory starting point: UK and devolved building-control authorities. 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 Leicester?

For the Leicester reference point, the 2001–2020 NASA POWER climatology reports 9.6 °C annual mean temperature, 86.5% relative humidity and 2.05 mm/day corrected precipitation. The monthly maximum peaks at 32.6 °C in July.

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

No. The Leicester response is gridded monthly climatology; its lowest monthly minimum of -9.2 °C in February 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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