Abstract
　This paper present the wave climate characteristics around the Japanese coast estimated from the statistical analysis for the long-term wave data observed at 11 coastal stations by the Japan Meteorological Agency. The wave data processed by the Port and Harbor Research Institute, Ministry of Transport are added to a portion of wave statistics. The wave statistics obtained from the analysis are monthly, seasonal, and yearly means of significant waves, their statistical distributions, sea state persistency, spectral characteristics and long period trend of time series for significant wave height and the maximum significant waves classified by the pattern of meteorological disturbances. Moreover, it is shown that the wave statistics estimated from visual wave observations are less reliable in a quantitative sense than those from instrumental wave observations.

【キーワード】：計器による波浪観測資料，目視による波浪観測資料，波候統計，時系列解析

*愛媛大学工学部海洋工学科
Department of Ocean Engineerinf, Faculty of Engineering
**日立情報制御システム（株）
Hitachi Information Control System Ltd.