Unprecedented September heatwave summary

19 Sep 2023 01:07 PM

As the weather in the UK turns increasingly Autumnal, it may already seem a distant memory that the start of September saw an unprecedented heatwave in the UK.

For the first time there was a run of seven consecutive days recording 30°C or higher in September. This surpassed the previous longest runs of five days in September 1929 and 1911.

It was also a notable spell for overnight temperatures, with the first consecutive tropical nights recorded in September.

A significant number of long running weather stations broke their September maximum temperature records, some by quite a margin.

A summary of the notable weather event has now been published, with all the statistics and records outlined and contextualised against the historical record.

Click here for the full blog post