noun
Pacific seaboard; Pacific side
Refers to the side of Japan facing the Pacific Ocean, often contrasted with 日本海側 (Sea of Japan side). Used in weather forecasts, geography, and regional descriptions.
太平洋側では明日は晴れるでしょう。
It will be sunny tomorrow on the Pacific side.
太平洋側の地域は冬でも比較的温暖です。
Regions on the Pacific side are relatively mild even in winter.
Refers to the Sea of Japan side, which often has heavier snowfall in winter, in contrast to the drier Pacific side.
Compound of 太平洋 (Taiheiyō, 'Pacific Ocean') + 側 (gawa, 'side').