People are being warned of the possibility of traffic delays as holidaymakers return home after the long weekend.

Waka Kotahi NZ Transport Agency is encouraging people to make use of its Holiday Journey Planner tool to plan ahead to avoid traffic delays.

The Holiday Journey Planner shows predicted traffic conditions for popular routes over the Labour weekend period, based on travel patterns from previous years.

Regional maintenance and operations manager Rob Campbell says in the Bay of Plenty, people can expect delays on State Highway 2 between Paeroa and Waihi for westbound on Monday between 10am and 5pm, with the heaviest traffic predicted between 11am and 3pm.

'For those travelling eastbound on State Highway 29 over the Kaimai Range, expect the westbound peak will be Monday from 10.30am until 5pm.

'In the Waikato, delays are expected on State Highway 25 around Tairua southbound – Monday will be busy from 10am until 5.30pm with the heaviest period from 11am until 4pm."