Climate Design Data: Douglas, Ireland

Direct answer

NASA POWER's 2001–2020 climatology at the Douglas reference point reports an annual mean 2 m temperature of 10.2 °C and relative humidity of 88.4%. The highest monthly maximum is 25.6 °C in July, while the lowest monthly minimum is -4.9 °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 3.04 mm/day and annual 10 m wind speed is 5.86 m/s. For climate design data, use the 25.6 °C and -4.9 °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.

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 Douglas?

Douglas is represented here at approximately 51.8744, -8.4350 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 Douglas 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.

Douglas NASA POWER monthly climate screening table

Douglas ranked monthly climate fingerprint

• Douglas mean temperature, highest to lowest: July 15.31 °C, August 15.05 °C, June 13.81 °C, September 13.55 °C, October 11.10 °C, May 11.09 °C, April 8.56 °C, November 8.22 °C, December 6.66 °C, March 6.62 °C, January 6.11 °C, February 5.87 °C.
• Douglas monthly maximum, highest to lowest: July 25.60 °C, August 24.72 °C, June 23.19 °C, September 21.80 °C, May 21.57 °C, April 18.54 °C, October 18.47 °C, March 16.41 °C, November 15.32 °C, December 13.57 °C, January 13.29 °C, February 13.14 °C.
• Douglas monthly minimum, highest to lowest: July 6.95 °C, August 6.04 °C, June 4.66 °C, September 3.80 °C, May 1.66 °C, October 0.35 °C, April -1.14 °C, November -1.83 °C, February -2.83 °C, December -3.62 °C, March -3.90 °C, January -4.91 °C.
• Douglas relative humidity, highest to lowest: December 92.49 %, November 91.79 %, January 91.72 %, February 90.56 %, October 89.76 %, March 89.07 %, September 88.01 %, April 86.55 %, August 86.54 %, July 85.40 %, May 84.97 %, June 84.32 %.
• Douglas corrected precipitation, highest to lowest: November 3.84 mm/day, December 3.73 mm/day, October 3.70 mm/day, January 3.40 mm/day, August 3.06 mm/day, July 2.84 mm/day, February 2.82 mm/day, June 2.82 mm/day, September 2.69 mm/day, March 2.63 mm/day, May 2.50 mm/day, April 2.44 mm/day.
• Douglas 10 m wind speed, highest to lowest: January 6.81 m/s, December 6.79 m/s, February 6.63 m/s, November 6.32 m/s, March 6.14 m/s, October 6.02 m/s, April 5.48 m/s, May 5.44 m/s, September 5.41 m/s, August 5.21 m/s, June 5.09 m/s, July 4.98 m/s.

Douglas month-to-month screening ledger

• Douglas January: mean 6.11 °C, change from December -0.55 °C; max–min span 18.20 °C; humidity 91.72%, change -0.77 points; precipitation 3.40 mm/day; wind 6.81 m/s.
• Douglas February: mean 5.87 °C, change from January -0.24 °C; max–min span 15.97 °C; humidity 90.56%, change -1.16 points; precipitation 2.82 mm/day; wind 6.63 m/s.
• Douglas March: mean 6.62 °C, change from February +0.75 °C; max–min span 20.31 °C; humidity 89.07%, change -1.49 points; precipitation 2.63 mm/day; wind 6.14 m/s.
• Douglas April: mean 8.56 °C, change from March +1.94 °C; max–min span 19.68 °C; humidity 86.55%, change -2.52 points; precipitation 2.44 mm/day; wind 5.48 m/s.
• Douglas May: mean 11.09 °C, change from April +2.53 °C; max–min span 19.91 °C; humidity 84.97%, change -1.58 points; precipitation 2.50 mm/day; wind 5.44 m/s.
• Douglas June: mean 13.81 °C, change from May +2.72 °C; max–min span 18.53 °C; humidity 84.32%, change -0.65 points; precipitation 2.82 mm/day; wind 5.09 m/s.
• Douglas July: mean 15.31 °C, change from June +1.50 °C; max–min span 18.65 °C; humidity 85.40%, change +1.08 points; precipitation 2.84 mm/day; wind 4.98 m/s.
• Douglas August: mean 15.05 °C, change from July -0.26 °C; max–min span 18.68 °C; humidity 86.54%, change +1.14 points; precipitation 3.06 mm/day; wind 5.21 m/s.
• Douglas September: mean 13.55 °C, change from August -1.50 °C; max–min span 18.00 °C; humidity 88.01%, change +1.47 points; precipitation 2.69 mm/day; wind 5.41 m/s.
• Douglas October: mean 11.10 °C, change from September -2.45 °C; max–min span 18.12 °C; humidity 89.76%, change +1.75 points; precipitation 3.70 mm/day; wind 6.02 m/s.
• Douglas November: mean 8.22 °C, change from October -2.88 °C; max–min span 17.15 °C; humidity 91.79%, change +2.03 points; precipitation 3.84 mm/day; wind 6.32 m/s.
• Douglas December: mean 6.66 °C, change from November -1.56 °C; max–min span 17.19 °C; humidity 92.49%, change +0.70 points; precipitation 3.73 mm/day; wind 6.79 m/s.

Harth retrieved this point climatology from NASA POWER API v2.9.7 for location record 2964690. The ranked fingerprint and transition ledger preserve Douglas'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: Carrigaline, Ireland
• Climate Design Data: Ballincollig, Ireland
• Climate Design Data: Castletroy, Ireland
• Climate Design Data: Limerick, Ireland
• All climate & energy design data guidance for Ireland
• Daylight & Orientation: Douglas, Ireland
• Solar Altitude & Azimuth: Douglas, Ireland
• Solar Shading Design: Douglas, Ireland
• Sun Path: Douglas, Ireland

Sources and method

Location data from the GeoNames IE dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2964690). Regulatory starting point: Department of Housing, Local Government and Heritage and the local building-control 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

• gov.ie

• power.larc.nasa.gov

• power.larc.nasa.gov