It follows fears that the sudden move could cause severe distress to some passengers who have had not had time to change their plans.
Around 40 regions of the UK are due to move from green to amber, including several London boroughs, counties such as Nottinghamshire, Powys and Surrey and cities including Glasgow, Plymouth and Sheffield.
There are three additions to the list of red regions in the UK – Bolton, Bradford and Caerphilly – while 22 regions of France are now classified as red.
Anyone who has visited a red region is obliged to self-isolate for 14 days after arriving in Jersey. Amber arrivals must self-isolate for five days and can only enter the community after testing negative for Covid-19, from a sample taken on their fifth day of quarantine.
In a statement, a spokesperson for the government, said: ‘Following advice from public health officials, and looking at the pattern of the arrivals scheduled on Monday morning, there is a risk that implementing a new quarantine policy of this scale, over the weekend, would create a level of undue distress or harm that could disproportionately affect older travellers who may not have had time to amend their plans.
‘All classifications for the UK regions, correct as of today, will remain within this colour code until Wednesday night.
‘The regional classifications for inbound travellers for Germany and Italy will not be affected.’
On Wendesday, Curaçao, Hungary, Slovakia and Turkey are due to move from green to amber, while French Polynesia and Paraguay change from amber to red.
At the same time, South Africa and Oman switch from red to amber, while Australia, Singapore and South Korea will become green, having previously been amber.