The mean for August in east London was 19.7C, 1.5C above the 1981-2010 average. It was the 11th warmest back to 1797.

Rainfall of 17.8mm was 35 per cent of average, the driest August for 8 years. It was the 22nd driest back to 1797.

Sunshine at 177 hours was 91 per cent of average. It was the 68th dullest back to 1881.

Thunder was heard once on the evening of the 1st but the core of the storm was south of the Thames with over 50mm at Godstone and New Addington.

A look at the mean temperature shows how much the climate has warmed since the period 1961-90. Though the mean last month was only 0.9C up on the previous 10 years it was actually 2.3C warmer than 1961-90.

9am air pressure was largely below average with a pronounced dip on 24th bringing notably inclement weather for the time of year.

Here’s a few extremes for the month of September across the capital.