More rain showers are forecast for this week as lockdown restrictions ease, setting the scene for what could be one of the wettest Mays on record.
On Monday Londoners were told to expect scattered showers, which were expected to become more widespread, heavy and thundery throughout the afternoon.
But temperatures could still fetch up to 18C despite the rain, according to the Met Office.
The capital could see some bright or sunny spells on Tuesday before another set of showers dominate the region by the afternoon.
Rain could possibly become heavy but it will ease during the evening, the Met added.
The same is reported for Wednesday.
Although much of Thursday will be dry and bright, there is a chance of wind and rain.
By the end of the week the showers will be back again but this time Londoners could see longer spells of rain.
It comes as England enters its next phase of the roadmap out of lockdown with indoor hospitality at pubs and restaurants open again.
There had been 91 per cent of the expected rainfall for the entire month on May 14, with 63.5mm having fallen across the UK already.
The wettest May on record was in 1967, when 131.7mm of rain fell across the UK.
Met Office forecaster Steven Keates said even if the record is not broken, it will be a “notably wet month.”
“It’s sunglasses one minute and umbrellas the next,” he added.
There are likely to be heavy showers with a risk of thunder “up and down the country”, he said.
He added: “So if you can go in, it might be the best option.”