Climate change adaptation describes, in legal practice, the planning and implementation of measures by public bodies and private organisations to adjust natural and human systems to actual or anticipated climate impacts (for example flooding, heat, drought and coastal change) so as to reduce harm and, where appropriate, take advantage of beneficial opportunities.
The expression is used across multiple legal contexts rather than as a single defined term. In the UK, legislation (including the Climate Change Act 2008) requires periodic climate change risk assessment and a national adaptation programme, and enables government to require adaptation reporting by certain operators of essential services. Devolved administrations maintain their own adaptation programmes and policies. In Ireland, the Climate Action and Low Carbon Development Acts provide for the National Adaptation Framework and sectoral adaptation plans. Usage is broadly consistent across England & Wales, Scotland, Northern Ireland and Ireland.
Typical legal applications include: integrating resilience into spatial planning, EIA/SEA and environmental permitting; flood and coastal erosion risk management; infrastructure design and asset management; public law decision‑making (relevant considerations and consultation); corporate governance and disclosure of climate risks; and contractual risk allocation and procurement. Adaptation measures should be evidence‑based, proportionate, and compliant with applicable statutory duties and guidance.