Summertime, a boat trip with Laxen II is a great way to move around. You don't have to take a full sigtseeing tour but can hop off at the heritage park, but if you stay on, it is easily the most scenic way to the beach and back.
It is easy to get to Ängelholm, both by the slow train from Gothenburg and regional trains from Malmö and Helsingborg (including some direct connections from Copenhagen too). Next to the station is the bus station if you need further connections.
As the rest of Scania, Ängelholm is excellent for biking and here you can go both from the town to the beach or just along the river. That is when you're not busy pedalling along the Bjäre peninsula. A set tour is the "Lergöksrundan" on around 16 kilometres - the tourist office has a map. If you don't have your own bike, try contacting the people in the link below.