Watson, 23, began her first-round match with Caroline Garcia on Monday but had to wait until Tuesday to complete it as bad light intervened.
The British number one returns on Wednesday, taking on Slovakia's Daniela Hantuchova on Court One at approximately 15:00 BST.
Defending men's champion Novak Djokovic returns to Centre Court, along with five-time women's champion Serena Williams.
Watson's compatriot Liam Broady is also back in action.
Another sweltering day is in prospect, with the tournament record of 34.6C, set in June 1976, potentially at risk.
The grounds open at 10:30 BST with the action starting on the outside courts at 11:30, and 13:00 BST on Centre Court and Court One.
