Halifax District RCMP say they've responded to 19 reports of vehicle break-ins so far this month.
Valuables like cell phones, personal identification and money were taken from vehicles in Tantallon, Fall River, Fletchers Lake, Lower Sackville and Eastern Passage.
They say 16 of the cars were unlocked.
"Thieves look for vehicles that are easy to enter," said Cpl. Dal Hutchinson in a news release. "By locking your vehicle's doors and removing valuables, you make your vehicle less attractive to thieves."
Police are asking the public to notify them of any suspicious activity in their neighbourhoods and to report any thefts from vehicles by calling 902-490-5020.