Tesco in Tolworth Broadway will re-open in just over a week's time, the chain has said.
The shop, adjoining the Esso petrol station, has been closed since April and was due to open again in June.
A Tesco spokesman said: "We have invested a lot into improvements which include a more appealing and brighter forecourt, a new and fresh look in the store as well as the latest fuel technology pumps."
The cashpoint and Costa coffee facilities will return.
The shop will open again on Monday, August 18.