Autumn Storms

Residual typhoon activity may influence early autumn weather patterns, particularly in September, potentially bringing heavy rainfall and strong winds :cite[4]:cite[6].

Central West Pacific 300mb Winds

Upper-level wind patterns over the Central West Pacific influence storm tracks and precipitation distribution across the Korean Peninsula during autumn months.

Yellow Sea SST

Sea surface temperatures in the Yellow Sea remain relatively warm in early autumn, contributing to higher humidity levels and potential for convective activity in coastal areas.

Topological Influences

South Korea's mountainous terrain, including the Taebaek and Sobaek ranges, creates localized weather variations and affects rainfall distribution patterns :cite[8].

Humidity (Sept to Nov 2025)

Humidity levels decrease significantly throughout autumn, with comfortable conditions prevailing by October and November after the humid summer months.

Polar Arctic Vortex

The position and strength of the polar vortex can influence the timing and intensity of cold air outbreaks as autumn progresses toward winter.

South Korea Autumn 2025 Weather Analysis

Current Season

Current Season

Weather Averages

Climate Drivers

Global Warming Effects