The Met Office has issued a yellow weather warning this week, with homes and businesses across the South West are likely to flood.
The South Hams could also see disruptions to power supplies on Monday evening overnight through to Tuesday.
Flooding to roads is also expected, with longer journeys for drivers.
Coastal areas and hills will be worse hit, as well as the Ivybridge area stretching up across Dartmoor.
For advice on travelling during rain and strong winds, visit the met office website.