The combination of a weaker New Zealand dollar and persistently strong global prices has prompted Westpac to upgrade its Fonterra milk price forecast to $7.40 per kg of milk solids for the 2013/14 season, up 90c from the bank's previous forecast.
The bank also expects Fonterra to raise its own milk price forecast, which currently sits at $7.00 per kg, following its board meeting on Tuesday.
"Fonterra may even go north of our $7.40 per kg forecast," Westpac economist Nathan Penny said in a commentary.
Fonterra may also update its production outlook, he said.
"We predict a rebound in production from drought of around 5 per cent on last year's level, while Fonterra has previously signalled production growth of 2 per cent," Penny said.