Firefighters will be closely monitoring forecast northerly winds as they try to shore up containment lines around the Kaimaumau fire in Northland.
The blaze in wetlands and vegetation spans more than 2400 hectares, and has forced two evacuations of residents.
There will be 43 firefighters working on the fire today.
Fire and Emergency incident controller John Sutton said crews are monitoring building easterly winds and northerlies forecast.
“Well the forecast is picking a bit of wind to develop probably middle afternoon from the north which is a bit of a worry, always a bit of a worry on this fire, so we’ve got people along the southern flank to be prepared to counter that.”
He said crews are still confident they will be able to hold containment lines if the wind picks up.