The Met Office has predicted “scattered” bouts of rain, a few of which may be on the heavy side, across south-east England.
The forecasting body also said it should feel slightly warmer for many.
Home Secretary Suella Braverman will hold talks on Wednesday with senior sporting figures and police leaders on protecting Wimbledon and other events this summer from disruptive protests.
Event organisers and national sporting bodies will meet Ms Braverman and Sports Secretary Lucy Frazer to discuss the Just Stop Oil and Animal Rising groups.
It comes as Wimbledon organisers said they are “not complacent” about the “high” risk of protest at the tournament and explained they had boosted security measures over concerns about disruption.
All play stopped on outside courts at Wimbledon on Tuesday following a grey afternoon of consistent downpours.