Between fall and spring, a wetsuit is recommended. The chart will give you a general idea of the water temperatures and what weight wetsuit you will need. When deciding what to bring, consider that you will be diving a lot each day and it takes your body a while to warm up after a dive. Air temperature, the wind and whether it is sunny all affect how fast your body warms back up after a dive. What each person needs is an individual choice. Some wear a full suit in the summer and some dive with a shorty in the winter.