The meteorological and oceanographical observation data at the Ashika-Islet and the P.H.R.I. are analized statistically.
　The representative results are shown in such items as follows;
　1) The value of 1574 mm is the normal annual rainfall at Kurihama.
　2) The past heaviest monthly rainfall is 426.1 mm in May.
　3) The maximum annual rainfall is 2009 mm in 1955.
　4) The past maximum rainfall per hour and per day is 202 mm and 67mm respectively.
　5) The mean tide level is on TP-0.039 m, the mean monthly highest water level is TP+0.607 m, and the mean monthly-lowest water level is TP-0.962 m.
　6) The past maximum mean wind speed is about 28 m/s at the Institute, and at the Ashika Islet 35 m/s with southern wind direction. The maximum instantaneous one is 40.6 m/s (direction: SSW) at the Institute and 49.6 m/s at the Ashika Islet, and 50 years probable peak gust is about 43.2 m/s at the Institure.The wind direction at the Institute is apt to be biased clockwise by about one unit direction of 16 direciton presentation in the direction of NW-NNW, NNE, ESE and SSW, while anticlockwise in the direction of N and ENE-E. Speaking of wind speed, the ratio of wind speed at the Institute to the Islet is 0.3 to 0.4 the N direction, 0.7 to 0.8 in W and S if the wind speed is less than 10 m/s, and is 0.65 to 0.75 in S, 0.95 in WSW.The wind speed at the Institute is independently constant at 0 to 3.5 m/s when the direction is E.
　7) The ratio of the significant wave period T1/3 to the mean wave period T is about 1.25, and this value is a little larger than the values by the other studies.