Climate Design Data for Manchester, UK

Direct answer

Use the Met Office Woodford 1991–2020 normals as an explicitly labelled Greater Manchester proxy, then test whether the station represents the actual site. Select the CIBSE 2025 weather zone by project postcode or coordinates, use a TRY for annual assessment and the required DSYs for overheating, and confirm the English Approved Document edition and transition route.

Public observed baseline

Woodford provides an official, reproducible Greater Manchester reference. Its value lies partly in making the proxy visible. A city-centre site can differ through urban form and waste heat; the Pennine fringe can differ through elevation and exposure; and local shelter changes wind and driving-rain conditions. Do not hide those differences behind a city label.

What the baseline suggests—and what it cannot decide

Relative to the London reference in this tranche, Woodford's normals are cooler, wetter and less sunny. That is useful when setting early questions about fabric heat loss, rain exposure, daylight/solar availability and outdoor-space use. It is not a licence to derive plant capacity, façade pressure or drainage intensity from monthly data.

Select, do not guess, the CIBSE zone

CIBSE's 2025 weather geography contains 28 zones. Enter the project postcode or coordinates in the official selection tool and archive the result. Then use the full TRY or DSY file name rather than a shorthand such as “Manchester weather”. The identifier carries the zone, file role, time period, emissions scenario, probability percentile and version needed for reproducibility.

For a long-life building, agree whether present-day files alone are sufficient. Future files are scenario-dependent rather than forecasts of a single outcome. The brief should state the design life and resilience question first; only then should the team choose future periods and probability percentiles.

English compliance and overheating

Manchester is in England, so Scottish, Welsh and Northern Irish energy guidance does not apply. At the review date, distinguish the current English Approved Document L route from the published 2026 edition with 2027 effective dates. For new residential buildings within scope, Approved Document O provides routes for overheating mitigation.

Keep the compliance model and wider design-risk model legible. A calculation that satisfies a regulatory method may not answer a client's future-climate or operational-resilience question. Conversely, a resilience scenario does not replace the required regulatory run. Label both.

Limits

The figures above are Met Office normals, not CIBSE design data. They do not include degree-days, design dry-bulb or wet-bulb values, wind pressures, rain intensities or licensed hourly weather. Obtain and record the authoritative input for each task.

Manchester proxy-station suitability scorecard

Score each factor close, materially different or unknown and resolve every unknown that could change the model decision.

Related

• UK Building Climate and Weather Data Explained
• Climate Design Data for London, UK
• Climate Design Data for Edinburgh, UK

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Source & method: Observed figures are from the official Met Office Woodford location-specific long-term averages, station Woodford in Greater Manchester, climate period 1991–2020, retrieved 26 August 2026. Woodford is presented as a regional proxy, not a universal Manchester station; the Met Office describes its location pages as samples for general interest rather than formal climate monitoring. Weather-file roles and the 1994–2023 baseline observation period are from CIBSE Weather Data and the 2025 technical briefing; select the project zone by postcode or coordinates and obtain licensed files from CIBSE. English compliance references are official Approved Document L, Approved Document L 2026 and Approved Document O pages. No CIBSE tabulated values are reproduced.