Barometric Pressure Forecast for Chiyoda City, Japan
Barometric pressure forecast for Chiyoda, Japan — on the northern Kanto Plain in Gunma Prefecture, near the Tone River. See current barometric pressure and what it means for weather-sensitive people.
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Pressure and weather in Chiyoda City
Chiyoda lies on the flat alluvial plain of northern Kanto, with the Tone River close by to the south and the volcanic bulk of Mount Akagi and the Ashio mountains standing to the north and west. Japan's weather year runs through four sharply defined phases, and all of them register here. The tsuyu rainy season in June and July parks a stationary front over the archipelago and holds pressure low and humidity high for weeks. From August into October the typhoon season brings the year's most severe barometric falls, and even systems that pass well offshore drag the pressure down noticeably across Kanto. Winter flips the pattern: the Siberian high builds, and dry northwesterly air that has already dumped its snow on the Japan Sea side descends onto the plain as the karakkaze, a hard cold wind that leaves Gunma sunny, dry and windy under high pressure for days. Spring adds fast-moving lows and yellow dust from the mainland.
What this means for you
Weather sensitivity is widely recognised in Japan, where it is discussed as kishou-byou, and the tsuyu and typhoon seasons are when most people notice it. Watching the barometric pressure forecast through June and September is the highest-yield habit here.