Today's Seaside Point sea temperature is 9.4 °C. Statistics for 14 Apr (1981–2005) – mean: 10.4 °C, range: 9.2 °C to 11.6 °C. The water temperature (9 °C) at Seaside Point is very cold. You will need a quality steamer wetsuit, a neoprene hood, gloves and boots.