Answer
Bermuda is an island, and the surrounding water moderates Bermuda's temperature, acting as a heat reservoir. Water has a high specific heat capacity when compared to other common materials, and is slow to warm up and slow to cool down. In other words, water gives off and absorbs large amounts of energy for small drops and rises in its temperature.
Also, internal energy is carried in the warm water of the Atlantic current known as the Gulf Stream. The GS flows northeast from from the warm Caribbean, past Bermuda.
Work Step by Step
This is discussed on pages 290-291 and shown in Figure 15.10.
