This tide-gauge station is located at the end of Santa Monica Pier near the harbormaster's office. Although located behind the breakwater, there is sufficient water flow to be representative of the nearshore waters. The new automated temperature system, which records one reading each hour, became fully operational in September of 1993 and manual data collection was subsequently discontinued more than a year later. To be comparative with the other shore stations providing a single daily reading, these hourly values were averaged over the 24-hour period into one daily mean temperature. Analysis of the overlapping data shows that this value is about 0.2°C cooler than the historical data set.