Dublin Climate Action Week is an annual one-week programme of online and in-person events, which aims to showcase and inspire climate action across the Dublin region. Dublin Climate Action Week 2026 is taking place from the 11th - 17th of May. The four Dublin Local Authorities, the Dublin Climate Action Regional Office (CARO) and Codema - Dublin’s Energy Agency have come together once more in 2026 to organise a great programme of events to showcase the Dublin region’s climate action progress, demonstrate the leadership role of the four Dublin Local Authorities and inspire action.

A 5km traffic-free, family-friendly event with bike DJ in the Phoenix Park as the sun sets. Register now for a chilled summer evening! Join Dublin City Council and Fingal County Council to celebrate Bike Week in the beautiful Phoenix Park for our Sunset Cycle. This is a traffic-free and family-friendly 5km in the park complete with bike DJ, iBIKE Dublin, making it a perfect way to spend a chilled evening with your family or friends. This is a free event. Visit Dublin City Council Bike Week for a full list of events.

National Biodiversity Week is all about connecting you with nature. It’s about communicating the importance of biodiversity and providing motivation and know how to play your part in protecting it. It’s also about entertainment! Find fun and wonder outdoors with ten days of celebration! National Biodiversity Week is organised by the Irish Environmental Network (IEN), with thanks to funding from the National Parks and Wildlife Service (NPWS). Events are run by IEN member groups, as well as by Local Authority Biodiversity Officers, through the Heritage Council's Ceangal programme, NPWS