According to the UK Foreign Office, Sri Lanka has recently seen shortages of basic necessities such as medicines, fuel and food due to a lack of hard currency to pay for imports.
The FCDO said there may be long queues at grocery stores, gas stations and pharmacies and local authorities may impose the rationing of electricity, resulting in power outages.
The squeeze on goods also led to a number of protests over the weekend, with one in Columbo on 31 March resulting in a curfew being temporarily imposed.
"There are reports that there will be further protests across the island in the next few days," the FCDO said.