Japan sees sweltering conditions at the start of the year’s hottest period, with reports describing “brutally hot” and potentially life-threatening heat. On Wednesday, temperatures are expected to rise above 40°C (104°F) in some cities, according to coverage referencing government guidance. The articles situate the current spike within a broader trend of increasingly severe summer weather in Japan in recent years. One outlet notes that Japan reached an all-time high temperature of 41.8°C last year, underscoring the intensity of recent heat records. While specific locations and exact forecast details are not consistent across the brief excerpts, all sources focus on the same immediate development: dangerously high temperatures in early summer days and the risk to public health. The reporting also points to the government’s role in issuing warnings or updates as temperatures climb.