But Yeo and others remained upbeat about longer-term prospects.
"As currently the largest global supplier of basic dairy commodity into the global milk pool, the co-operative could double its earnings before interest and tax from $1 billion to $2 billion over time by significantly expanding its existing consumer and business service brands in the global dairy market, as well as from better cost efficiency," he said.
Goldman Sachs analyst Marcus Curley said higher-than-expected commodities prices, post-drought, would feed into lower profitability for Fonterra's substantial ingredients business and would put pressure on margins for the consumer brands.
Expansion into paediatric formulas in China under the Anmum brand would be a net cost in 2013/14.
"We still expect very healthy growth but we have trimmed back the 2013/14 result as a result of high commodities prices and the investment required in China," he said.
Fonterra last month forecast a farmgate milk price of $7 a kg of milksolids for the 2013/14 season. At that level, the milk price would be a 20.7 per cent improvement on the forecast for the 2012/13 season.
Chief executive Theo Spierings said at the announcement that shareholders and Fonterra unit holders should expect the strong lift in international dairy powder prices to create "a more challenging environment" for the co-operatives' earnings in the first half of the 2013/14 financial year. Fonterra's net profit was $667 million in the year to July 2012.