The rain has fallen for what feels like two years straight: in drizzles, in showers and, with troubling regularity, in downpours. The weather has always been Britain’s favorite topic of conversation. The clouds are familiar. Increasingly, though, they are also a threat.

In September, a month’s rain fell in a single day in some parts of England. The 18 months to March 2024 were England’s wettest in recorded history. Even on an island that has built at least part of its identity around tolerating inclement weather, it has been impossible to ignore the deluge. Flooding has submerged fields, ruined homes, and at times, cut off whole villages.

As sea levels rise and extreme weather becomes more common, experts say that Britain’s traditional defenses — sea walls, tidal barriers and sandbanks — will be insufficient to meet the threat. It is not alone: in September, deadly floods in Central Europe led to the deaths of at least 23 people.