China’s annual sanfu period – the traditional 'dog days of summer' marking the hottest stretch of the year – concluded on August 18 after 30 days of record-breaking temperatures. While this year’s sanfu ranked as the second-hottest since records began, authorities warn that sweltering conditions will continue across central and southern regions.
A Climate Benchmark
Rooted in the Chinese lunar calendar, sanfu typically spans three 10-day phases after the summer solstice. This year’s national average temperature reached 23.21°C, narrowly missing the 2024 record. Regions like Xinjiang, Sichuan, and Henan endured over 15 consecutive days above 40°C, with 100+ weather stations reporting unprecedented heat duration.
High-Pressure Culprit
Meteorologists attribute the prolonged heat to a stubborn high-pressure system trapping warm air over eastern China. 'Clear skies and stagnant atmospheric conditions created an oven-like effect,' explained a climate analyst, noting similar patterns in recent years.
No Respite Ahead
Despite sanfu’s conclusion, cities including Shanghai, Nanjing, and Hangzhou face 40°C forecasts this week. Humid conditions in southern provinces compound heat stress risks, prompting health advisories for vulnerable groups. Authorities recommend hydration, lightweight clothing, and limiting midday outdoor activities.
As climate researchers analyze these trends, the 2024 sanfu serves as a stark reminder of Asia’s evolving weather patterns and their socioeconomic implications.
