For echo sounders, the distance actually traveled is two times the distance to the seafloor from the source. transducer (from the transmission source, to the bottom and back again). This results in a significant. source of signal loss for the system receiving the sound pulse, which must be compensated for at the.
Average Weather in Hilton Head Island South Carolina, United States. In Hilton Head Island, the summers are hot and oppressive, the winters are cold and windy, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 42Â°F to 89Â°F and is rarely below 30Â°F or above 95Â°F.
Hilton Head can get 90-degree weather between May and September. But the thermometer rarely tops 100 Â°F (38 Â°C). That kind of heat descends on the island an average of just once every two years. July is when a day is most likely to get that hot. Days per month in Hilton Head Island of at least 70, 80 or 90 Â°F.