Aviva analysis has found that more than a third (35%) of its flood claims happen in June, July and August. The insurer said that July and August each accounted for 12% of total flood claims, only exceeded by December (17%).

In five of the last ten years, (2016, 2018, 2020, 2021 and 2022), Aviva received most of its flood claims during the summer months and not during the traditional flood season of October to March.

Jason Storah, CEO UK & Ireland general insurance at Aviva, said: “Traditionally, we think of floods happening in the autumn and winter, when rainfall occurs over a period of time and rivers reach capacity. However, this analysis shows that floods can and do occur at any time and summer flash floods are becoming more commonplace.”

He added: “This pattern of flood claims suggests that residents and businesses should be prepared for floods at any point during the year and put in place a flood action plan.”