Rainy Season Health Guide: Coping with Humidity and Barometric Pressure Changes

Thu, 25 Jun 2026 10:00:00 +0900

Late June marks the peak of Japan’s rainy season. The sharp swings in barometric pressure and soaring humidity can trigger headaches, fatigue, and dizziness — a cluster of symptoms often called “tsuyu-daru” (rainy season malaise). Here is how to stay comfortable and healthy through the wet weeks ahead.

Why Barometric Pressure Affects Your Body

During the rainy season, low-pressure and high-pressure systems pass through in quick succession. The inner ear detects these pressure shifts, and when it overreacts, the autonomic nervous system goes out of balance, causing headaches, nausea, and vertigo. Roughly one in three Japanese people experience some form of “weather-related pain.” On days when pressure swings are severe, avoid overexertion and take it easy. Weather forecasting apps can help you identify your personal trigger patterns so you can prepare in advance with medication or lifestyle adjustments.

Measures-Against-Humidity on Guide to Local Medical Clinics, Healthcare, and Beauty Services

Rainy Season Health Guide: Coping with Humidity and Barometric Pressure Changes

Why Barometric Pressure Affects Your Body