
Dairy led the ANZ commodity index's monthly slide, falling 6.5% in July. Casein rose 28.2% YoY. A firmer kiwi could cut export returns further into August.
New Zealand export commodity prices fell 3.9% in July, the steepest monthly decline since November 2022. Dairy led the drop in the ANZ World Commodity Price Index, a monthly measure of what New Zealand's exporters receive. The index remains up 0.5% from a year earlier.
Dairy, the index's largest component, fell 6.5% on the month and now sits 11.3% below year-ago levels. ANZ said dairy was the main driver of the decline. Whole milk powder dropped 5.3%, with strong global supplies weighing on prices as anticipated, according to ANZ Research. Sales tied to New Zealand's upcoming production season added further supply; the slide, ANZ said, reflected those seasonal volumes.
Casein ran the other way. Prices are up 28.2% year on year. Caseins and milk protein concentrates are increasingly in demand as high-value protein ingredients, ANZ said, with supply not keeping pace.
The meat and fibre index slipped 3.0%, its first monthly decline since May 2025. Wool fell 12.0% in July even with supply tight. Buyers have turned more cautious than at any point over the past year, ANZ said, and the wool index still holds a 69.8% gain on the year. Overseas beef prices lost 4.4% on competition from South American exporters; the beef index remains up 16.5% on the year, supported by tight global supplies.
Horticulture rose 2.1%, with gold kiwifruit gains offsetting weaker apple prices. Green kiwifruit started July firm before fading through the month. Forestry added 0.7% and sits 10.7% above year-ago levels; cheaper shipping and diesel costs have helped log prices recover even with demand from China soft.
Aluminium fell 8.2% on the month. ANZ said Middle East production, normally 8-9% of global output, remains roughly 35% below normal after conflict-related damage; higher output from China and Europe has pulled prices back near pre-conflict levels. The metal is still up 21.0% year on year.
ANZ described New Zealand's commodity prices as being in a less predictable phase. The ebb and flow of geopolitical events keeps oil and gas prices volatile, with grain and oilseed markets swinging too. Elevated shipping rates add another drag on export returns, ANZ said.
What the commodity slide means for producers depends on the currency. The NZD Commodity Price Index, which converts the world index into New Zealand dollars, fell 4.0% in July. Because the New Zealand dollar averaged just 0.1% higher over the month, the decline in local-currency terms tracked the world index almost exactly. Commodity swings feed directly into the kiwi, and forex market analysis covers that channel.
ANZ cautioned that a firmer kiwi could further erode the competitiveness of export prices in August, based on recent exchange rate movement.
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