Chesil Beach is well-known within the angling community, so if you're looking for a deserted, quiet spot, then it might not be the place for you. However, it does have scenic views and great spots to walk, and the sea is heaving with fish. Expect to find mackerel, bream, plaice, or cod, depending on the time of year. If you cast off at Abbotsbury in particular, you're likely to catch a wide variety of fish.
This 30 mile-long stretch of river ends at Froome harbour and offers plenty of great fishing spots along the way for catching the famous local brown trout. Particularly wonderful in summer, there are shady spots buzzing with mayflies that are ideal for whiling away a warm afternoon with a picnic. There are lots of activities for children to do in the area and walks for the whole family.
There is free coarse fishing in Wareham and at nearby Dorchester; just make sure you stay on public land, and don't move into privately owned areas without permission. Wareham has cosy pubs for a spot of lunch after a morning fishing, and there are events by the Quayside that run throughout the summer.
This area of coastline is some of the most beautiful in the area, with miles of beaches and the famous Old Harry Rocks. Parts of it are owned by the National Trust, and there is a large harbour in Poole that is popular with anglers. Fish in the area include flounder, bass, and mullet, and it's worth paying this area a visit in the afternoon to watch the sun go down. There's usually a beautiful sunset in the evening.
Bournemouth is a city that offers both great fishing and a fun urban centre to visit. Hengistbury Head is a great fishing area where you can fish for pollock, bream, and bass from the shore or by boat. Bournemouth beach is lovely and clean, although it can get a little busy in the summer. There are so many interesting attractions to visit such as piers, art galleries, museums, and an oceanarium.