Extreme heat cuts Indian garment factory output up to 10%, hitting Uniqlo, M&S, Tesco supply

An NYU Stern study across 10 facilities in four Indian regions finds extreme heat is driving productivity losses of up to 10% at garment factories supplying Uniqlo, Marks & Spencer and Tesco, escalating sourcing risk and cost pressure for Western retailers reliant on the subcontinent.

— Source publishedTue, 9 Jun, 2026, 15:45 IST·First seen Tue, 9 Jun, 2026, 15:48 IST·Source Apparel Resources India

What happened

Indian garment manufacturing sector · NYU Stern study finds extreme heat is causing up to 10% productivity losses at Indian garment factories supplying Uniqlo,

Key facts

  • 10%
  • 10 facilities
  • 4 regions

Why this matters

Diversification toward Vietnam, Bangladesh, and nearshore sourcing partners — plus targeted investments in climate-resilient supplier capacity — becomes a more defensible strategic priority.