As per dream interpretation and meaning, dreaming of beach is a positive dream. Beach is associated with progress. It also indicates escape from the current situation. It also means vacation and peace.
Dreaming of beach filled with people means competition, fight with strangers, or lack of success.
Dreaming of you enjoying on beach and are happy means progress, change of luck and achievements through due to hard work. It also means journey to a distant location for job or fun.
Dreaming of beach and you are running or being chased means you will soon face financial problems. It also suggests accident in future.
Dreaming of beach and there is sunshine means you will see change of luck.
Simply dreaming of beach and you wake up terrified or sad means you will be escaping from a current situation. It also might suggest that instead of facing the problem you might be running away from them. And it might be a good option at this point of time. You should take time away from problems so that you can find the solution.
Please note that a dream to have a meaning it should happen naturally. Not after talking or thinking intensely or watching something related to beach during day time or just before going to sleep.