Extreme heat has caused drop in UK milk supply, new data shows

by | Sep 25, 2026 | Business

Extreme heat has caused drop in UK milk supply, new data shows

Recent analysis by the Energy and Climate Intelligence Unit indicates that elevated temperatures during the summer months significantly impacted milk production across England and Wales. Farmers delivered approximately four fewer days worth of milk supply than historical norms during the May through August period, a shortfall attributed to harsh environmental conditions that affected grazing quality, crop yields, and animal welfare.

The financial impact on the agricultural sector has been substantial, with the lost milk valued at more than £83 million. This volume of production loss is equivalent to enough milk to fill over one billion school milk cartons. Individual farmers have been forced to adopt costly mitigation strategies, including housing cattle indoors earlier than usual and supplementing their herds with winter feed supplies to compensate for degraded pasture conditions.

Despite the significant summer decline, researchers project that overall UK milk production may still approach record levels in 2026. This outcome is possible because dairy farmers managed to build productive reserves earlier in the year that have partially compensated for the summer losses. Additionally, the sector has undergone structural consolidation in recent years, enabling farms to increase output through mechanization and economies of scale despite maintaining smaller herd sizes.

Experts caution that future heat events will present increasingly difficult challenges for recovery. Milk production is characterized as an inflexible agricultural product that cannot be stored or preserved for extended periods, making it particularly vulnerable to supply disruptions. Analysts have emphasized that current economic pressures continue beyond the immediate weather event, as depleted forage reserves have driven early transition to winter feeding, with subsequent impacts on input costs anticipated in coming months.

Stakeholders have called for enhanced support to implement climate adaptation strategies in dairy farming, including expanded shade provision, tree planting initiatives, and improved water infrastructure.

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