Shanghai experiences a humid subtropical climate with four distinct seasons, marked by hot, sticky summers and cold, damp winters.

The city receives most of its rainfall between June and September during the plum rain season and typhoon months, making waterproof layers essential for half the year.

Summer temperatures regularly exceed 35°C with oppressive humidity, while winter hovers between 0°C and 8°C with occasional freezing spells.

High humidity persists year-round at 70-80%, intensifying both the summer swelter and the bone-chilling cold of winter despite modest temperature readings.

The city's concrete jungle amplifies heat in summer and traps dampness in winter, so moisture-wicking fabrics outperform cotton in every season.