Updated 2026-08-31

Climate & Energy Design Data

Climate Design Data: Cork, Ireland

How to research climate design data for a specific site in Cork — the controlling authority, source documents, and checks to run before you rely on a number.

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Last updated August 31, 2026 · Location data from the [GeoNames IE dump](https://download.geonames.org/export/dump/IE.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2965140). Regulatory starting point: [Department of Housing, Local Government and Heritage and the local building-control authority](https://www.gov.ie/en/department-of-housing-local-government-and-heritage/collections/building-standards/). 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=-8.47061&latitude=51.89797&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.

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Direct answer

NASA POWER's 2001–2020 climatology at the Cork reference point reports an annual mean 2 m temperature of 9.7 °C and relative humidity of 89.5%. The highest monthly maximum is 25.9 °C in July, while the lowest monthly minimum is -7.0 °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 3.28 mm/day and annual 10 m wind speed is 5.55 m/s. For climate design data, use the 25.9 °C and -7.0 °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 Scott Barrington, Harth founder and architectural technology specialist · 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: 9.7 °C
Highest monthly maximum: 25.9 °C (July)
Lowest monthly minimum: -7.0 °C (January)

What must be verified for Cork?

Cork is represented here at approximately 51.8980, -8.4706 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 Cork 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.

Cork 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	5.64	13.14	-7.00	93.20	3.76	6.37
February	5.40	13.42	-3.66	92.07	3.10	6.25
March	6.21	16.86	-4.75	90.10	2.79	5.85
April	8.18	18.21	-2.57	87.36	2.61	5.26
May	10.71	22.72	0.09	85.67	2.72	5.26
June	13.40	24.38	3.64	84.97	3.00	4.92
July	14.82	25.89	6.28	86.32	3.11	4.80
August	14.53	25.29	4.86	87.55	3.28	4.98
September	13.05	22.17	2.49	89.01	2.97	5.15
October	10.52	18.55	-0.50	91.13	3.87	5.60
November	7.67	15.47	-3.66	93.28	4.13	5.85
December	6.16	13.37	-5.69	93.91	4.01	6.33

Cork ranked monthly climate fingerprint

Cork mean temperature, highest to lowest: July 14.82 °C, August 14.53 °C, June 13.40 °C, September 13.05 °C, May 10.71 °C, October 10.52 °C, April 8.18 °C, November 7.67 °C, March 6.21 °C, December 6.16 °C, January 5.64 °C, February 5.40 °C.
Cork monthly maximum, highest to lowest: July 25.89 °C, August 25.29 °C, June 24.38 °C, May 22.72 °C, September 22.17 °C, October 18.55 °C, April 18.21 °C, March 16.86 °C, November 15.47 °C, February 13.42 °C, December 13.37 °C, January 13.14 °C.
Cork monthly minimum, highest to lowest: July 6.28 °C, August 4.86 °C, June 3.64 °C, September 2.49 °C, May 0.09 °C, October -0.50 °C, April -2.57 °C, February -3.66 °C, November -3.66 °C, March -4.75 °C, December -5.69 °C, January -7.00 °C.
Cork relative humidity, highest to lowest: December 93.91 %, November 93.28 %, January 93.20 %, February 92.07 %, October 91.13 %, March 90.10 %, September 89.01 %, August 87.55 %, April 87.36 %, July 86.32 %, May 85.67 %, June 84.97 %.
Cork corrected precipitation, highest to lowest: November 4.13 mm/day, December 4.01 mm/day, October 3.87 mm/day, January 3.76 mm/day, August 3.28 mm/day, July 3.11 mm/day, February 3.10 mm/day, June 3.00 mm/day, September 2.97 mm/day, March 2.79 mm/day, May 2.72 mm/day, April 2.61 mm/day.
Cork 10 m wind speed, highest to lowest: January 6.37 m/s, December 6.33 m/s, February 6.25 m/s, March 5.85 m/s, November 5.85 m/s, October 5.60 m/s, April 5.26 m/s, May 5.26 m/s, September 5.15 m/s, August 4.98 m/s, June 4.92 m/s, July 4.80 m/s.

Cork month-to-month screening ledger

Cork January: mean 5.64 °C, change from December -0.52 °C; max–min span 20.14 °C; humidity 93.20%, change -0.71 points; precipitation 3.76 mm/day; wind 6.37 m/s.
Cork February: mean 5.40 °C, change from January -0.24 °C; max–min span 17.08 °C; humidity 92.07%, change -1.13 points; precipitation 3.10 mm/day; wind 6.25 m/s.
Cork March: mean 6.21 °C, change from February +0.81 °C; max–min span 21.61 °C; humidity 90.10%, change -1.97 points; precipitation 2.79 mm/day; wind 5.85 m/s.
Cork April: mean 8.18 °C, change from March +1.97 °C; max–min span 20.78 °C; humidity 87.36%, change -2.74 points; precipitation 2.61 mm/day; wind 5.26 m/s.
Cork May: mean 10.71 °C, change from April +2.53 °C; max–min span 22.63 °C; humidity 85.67%, change -1.69 points; precipitation 2.72 mm/day; wind 5.26 m/s.
Cork June: mean 13.40 °C, change from May +2.69 °C; max–min span 20.74 °C; humidity 84.97%, change -0.70 points; precipitation 3.00 mm/day; wind 4.92 m/s.
Cork July: mean 14.82 °C, change from June +1.42 °C; max–min span 19.61 °C; humidity 86.32%, change +1.35 points; precipitation 3.11 mm/day; wind 4.80 m/s.
Cork August: mean 14.53 °C, change from July -0.29 °C; max–min span 20.43 °C; humidity 87.55%, change +1.23 points; precipitation 3.28 mm/day; wind 4.98 m/s.
Cork September: mean 13.05 °C, change from August -1.48 °C; max–min span 19.68 °C; humidity 89.01%, change +1.46 points; precipitation 2.97 mm/day; wind 5.15 m/s.
Cork October: mean 10.52 °C, change from September -2.53 °C; max–min span 19.05 °C; humidity 91.13%, change +2.12 points; precipitation 3.87 mm/day; wind 5.60 m/s.
Cork November: mean 7.67 °C, change from October -2.85 °C; max–min span 19.13 °C; humidity 93.28%, change +2.15 points; precipitation 4.13 mm/day; wind 5.85 m/s.
Cork December: mean 6.16 °C, change from November -1.51 °C; max–min span 19.06 °C; humidity 93.91%, change +0.63 points; precipitation 4.01 mm/day; wind 6.33 m/s.

Harth retrieved this point climatology from NASA POWER API v2.9.7 for location record 2965140. The ranked fingerprint and transition ledger preserve Cork'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 IE dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 2965140). 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

Frequently asked questions

What does NASA POWER climatology show for Cork?

For the Cork reference point, the 2001–2020 NASA POWER climatology reports 9.7 °C annual mean temperature, 89.5% relative humidity and 3.28 mm/day corrected precipitation. The monthly maximum peaks at 25.9 °C in July.

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

No. The Cork response is gridded monthly climatology; its lowest monthly minimum of -7.0 °C in January 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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