Water takes a lot more energy to heat up and cool down than land does. Because of this, our summers are always cooler right at the beaches, and our winters are typically warmer.
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The difference is about three to four degrees, not a big difference, meteorologist Kate Guillet of the National Weather Service in Jacksonville said Wednesday. With sea breezes along the coast, it's cooler at the beach, she said.
You're probably wearing less clothes, and clothes provide shade, so you feel more of the sun on your skin. Sand is usually lightly-colored and thus reflective, which bounces more light (and thus heat) back at you.
Keep your heart rate upWhether you're braving the elements on the beach or in the sea, it's important that you keep your heart rate raised to help keep yourself warm. In particular, if you're about to surf or bodyboard, it's important you warm up just like you would for any other physical activity.
Above the ocean the air cools down due to the colder temperatures of the ocean water. This leads to the air becoming denser and a local high air pressure zone. The difference in air pressures above the beach and ocean is what causes the air movement we perceive as wind.