How many degrees can I swim?

When the temperature is 27-28 degrees, it is suitable for swimming in the sea. At present, the temperature of seawater is still around 24 degrees, which is no different from that in summer. The main problem is that the temperature is a little cold, and you will feel cold when you first come out of the water. You can take a big bath towel and wipe off the water drops immediately after you get out of the water, so you won't feel cold.