Morden Hall Park has re-opened after a sharp rise in river levels meant the park flooded.
Visitors have been advised to wear wellies to the venue in Morden Road, Morden, after heavy rainfall caused the River Wandle to burst its banks.
It was closed from 3pm on bank holiday Monday, August 25 to 9.30am this morning.
The Pantaloons open air theatre event and the open air cinema had to be cancelled yesterday due to the weather.
Ticket refunds are being offered.
For information contact 020 8545 6850 or email firstname.lastname@example.org.