Emerald Isle Water Temperatures for April 2016 Posted May 31, 2016 by Doc & filed under Articles, Fishing. Surf at Bogue Pier ranged from Low of 56-degrees to a high of 64-degrees with an average of 60.4-degrees (blue diamonds). Bogue Sound had a low of 48-degrees and a high of 72-degrees with an average of 62.1-degrees (red squares).