Climate Design Data: Lower Hutt, New Zealand

Direct answer

NASA POWER's 2001–2020 climatology at the Lower Hutt reference point reports an annual mean 2 m temperature of 12.6 °C and relative humidity of 84.0%. The highest monthly maximum is 27.2 °C in February, while the lowest monthly minimum is 2.2 °C in August; 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 2.49 mm/day and annual 10 m wind speed is 6.53 m/s. For climate design data, use the 27.2 °C and 2.2 °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 Lower Hutt?

Lower Hutt is represented here at approximately -41.2167, 174.9167 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 Lower Hutt 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.

Lower Hutt NASA POWER monthly climate screening table

Lower Hutt ranked monthly climate fingerprint

• Lower Hutt mean temperature, highest to lowest: February 16.74 °C, January 16.36 °C, March 15.54 °C, December 14.85 °C, April 13.48 °C, November 12.77 °C, May 11.77 °C, October 11.28 °C, September 10.19 °C, June 9.87 °C, August 9.24 °C, July 8.86 °C.
• Lower Hutt monthly maximum, highest to lowest: February 27.20 °C, January 27.17 °C, December 25.66 °C, March 24.08 °C, November 22.85 °C, April 21.26 °C, October 19.20 °C, May 18.80 °C, September 17.93 °C, June 15.90 °C, August 15.05 °C, July 14.60 °C.
• Lower Hutt monthly minimum, highest to lowest: February 8.51 °C, January 7.92 °C, March 7.70 °C, December 6.92 °C, April 6.36 °C, November 5.10 °C, May 4.46 °C, October 3.71 °C, July 3.64 °C, September 3.36 °C, June 2.71 °C, August 2.18 °C.
• Lower Hutt relative humidity, highest to lowest: July 87.27 %, June 87.10 %, August 87.06 %, May 86.04 %, September 85.70 %, October 84.70 %, April 83.87 %, November 83.26 %, December 82.65 %, March 81.11 %, January 79.99 %, February 79.24 %.
• Lower Hutt corrected precipitation, highest to lowest: June 3.21 mm/day, July 2.96 mm/day, August 2.80 mm/day, May 2.79 mm/day, October 2.73 mm/day, September 2.52 mm/day, April 2.46 mm/day, December 2.45 mm/day, November 2.20 mm/day, February 2.10 mm/day, March 1.94 mm/day, January 1.72 mm/day.
• Lower Hutt 10 m wind speed, highest to lowest: September 7.10 m/s, October 7.05 m/s, November 7.01 m/s, January 6.66 m/s, December 6.61 m/s, July 6.50 m/s, June 6.45 m/s, May 6.34 m/s, August 6.29 m/s, February 6.28 m/s, March 6.07 m/s, April 5.94 m/s.

Lower Hutt month-to-month screening ledger

• Lower Hutt January: mean 16.36 °C, change from December +1.51 °C; max–min span 19.25 °C; humidity 79.99%, change -2.66 points; precipitation 1.72 mm/day; wind 6.66 m/s.
• Lower Hutt February: mean 16.74 °C, change from January +0.38 °C; max–min span 18.69 °C; humidity 79.24%, change -0.75 points; precipitation 2.10 mm/day; wind 6.28 m/s.
• Lower Hutt March: mean 15.54 °C, change from February -1.20 °C; max–min span 16.38 °C; humidity 81.11%, change +1.87 points; precipitation 1.94 mm/day; wind 6.07 m/s.
• Lower Hutt April: mean 13.48 °C, change from March -2.06 °C; max–min span 14.90 °C; humidity 83.87%, change +2.76 points; precipitation 2.46 mm/day; wind 5.94 m/s.
• Lower Hutt May: mean 11.77 °C, change from April -1.71 °C; max–min span 14.34 °C; humidity 86.04%, change +2.17 points; precipitation 2.79 mm/day; wind 6.34 m/s.
• Lower Hutt June: mean 9.87 °C, change from May -1.90 °C; max–min span 13.19 °C; humidity 87.10%, change +1.06 points; precipitation 3.21 mm/day; wind 6.45 m/s.
• Lower Hutt July: mean 8.86 °C, change from June -1.01 °C; max–min span 10.96 °C; humidity 87.27%, change +0.17 points; precipitation 2.96 mm/day; wind 6.50 m/s.
• Lower Hutt August: mean 9.24 °C, change from July +0.38 °C; max–min span 12.87 °C; humidity 87.06%, change -0.21 points; precipitation 2.80 mm/day; wind 6.29 m/s.
• Lower Hutt September: mean 10.19 °C, change from August +0.95 °C; max–min span 14.57 °C; humidity 85.70%, change -1.36 points; precipitation 2.52 mm/day; wind 7.10 m/s.
• Lower Hutt October: mean 11.28 °C, change from September +1.09 °C; max–min span 15.49 °C; humidity 84.70%, change -1.00 points; precipitation 2.73 mm/day; wind 7.05 m/s.
• Lower Hutt November: mean 12.77 °C, change from October +1.49 °C; max–min span 17.75 °C; humidity 83.26%, change -1.44 points; precipitation 2.20 mm/day; wind 7.01 m/s.
• Lower Hutt December: mean 14.85 °C, change from November +2.08 °C; max–min span 18.74 °C; humidity 82.65%, change -0.61 points; precipitation 2.45 mm/day; wind 6.61 m/s.

Harth retrieved this point climatology from NASA POWER API v2.9.7 for location record 2188164. The ranked fingerprint and transition ledger preserve Lower Hutt'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: Wainuiomata, New Zealand
• Climate Design Data: Upper Hutt, New Zealand
• Climate Design Data: Wellington, New Zealand
• Climate Design Data: Levin, New Zealand
• All climate & energy design data guidance for New Zealand
• Sun Path: Lower Hutt, New Zealand

Sources and method

Location data from the GeoNames NZ dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2188164). Regulatory starting point: Ministry of Business, Innovation and Employment and the local council. 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

• building.govt.nz

• power.larc.nasa.gov

• power.larc.nasa.gov