Elevated seawater temperatures in Norway impact Grieg Seafood in third quarter

The salmon aquaculture company reports a lower-than-expected harvest volume in its Q3 trading update.
Grieg Seafood worker.

Grieg Seafood now operates solely in Rogaland, south-west Norway, following the sale of its other operations in Finnmark and Canada to Cermaq in July 2025.

Photo: Grieg Seafood.

Updated on

Grieg Seafood registered a harvest volume of about 6,800 tonnes (GWT) from its continuing operations in Rogaland in the third quarter of 2025, according to a trading update released on 8 October.

The Bergen-headquartered salmon farming company said the result was around 1,200 tonnes lower than expected, blaming unusually high seawater temperatures during the quarter for the drop in harvest volume.

In its Q2 financial report, Grieg Seafood had previously forecast 8,000 tonnes for the quarter, with a target of 30,000 tonnes for the full year.

The company, which in July confirmed the NOK 10.2 billion sale of its subsidiaries in Canada and Finnmark to Mitsubshi-owned salmon giant Cermaq, now operates aquaculture facilities solely in Rogaland, in southwestern Norway.

According to Grieg Seafood, “long-term fish welfare and optimization of MTB remain priorities.” The company said it carried out early harvesting from “cost-intensive sites” to prepare for the fourth quarter and for 2026.

In its update, the company reiterated that "sustainable farming practices are the foundation of Grieg Seafood's operations," stressing, "the lowest possible environmental impact and the best possible fish welfare [are] both an ethical responsibility and drive economic profitability."

The full report for the third quarter will be published on 13 November 2025.

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