Have you had a look at the camp site search facility on this website?
If you haven't then here is a list of campsites in Weymouth to choose from and many have their own website with tarrif prices and other information.
Sea Barn Farm. See my review for rather long details. We loved it here - quite quiet, family orientated & friendly.
Sea Barn is the sister site of West Fleet. You can use facilities at both. The end of their drives come off the same road/country lane.
Sea Barn = no club house
= 1 play area
= 1 new washblock & 1 normal washblock
= great views & sun sets
= more exposed (though do have hedges)
= no allocated pitches (except EHU) find a space without a tent with space for your.
West Fleet
= outdoor (supposedly heated pool)
= clubhouse
= several play areas (used them)
= slightly more inland
= tents seemed jammed in, but it was August - no idea of pitching rules.
moonfleet farm - our and the childrens favourite campsite - no play area as such - just a massive field with a massive tree and a football goal. Bathroom and campers facilities are outstanding. brand new wet rooms, two in a shepards hut (there are 4 in total) and 5 separate brand new loos. Campers kitchen again brandnew with (free!) washing machine. The owner is lovely and it is on a farm so lots of walks, a (fenced off) duck pond, and fresh eggs etc, you can also have a camp fire there - they provide the basket and you buy the wood at £5 for a big bag that lasts at least 2 nights.n Really laid back vibe, not too expensive and ehu pitches. Our favourite ever campsite :)
------------- June 2015: seaview international 2 nights
July 2015: little winnick 2 nights
August 2015: lower polladras 5 nights
august 2015: tollgate farm 5 nights
august 2015: oakdown 3 nights
September 2015: tregarton park
family of 6 with young children
Don't forget to leave a review of the campsites you have visited this year or last!