Europe gripped by unprecedented June heat wave as climate change amplifies extreme temperatures. Climate change amplifies both the frequency and severity of life-threatening heat waves. This week, Europe faces extraordinarily early and intense heat that is shattering June records across multiple nations. An upper-level high-pressure system is driving dangerous temperatures well ahead of the typical July and August peak season, creating a perfect storm of extreme conditions compounded by high humidity that produces dangerous heat indexes in regions lacking air conditioning.