Dogs on beaches

Hi does anyone know what months you can take dogs on the beaches please

They're not. There are no seasonal beaches, if dogs aren't allowed then it is all year round. There are dog friendly beaches where they are allowed all year round and I think the nearest to us is at Santa Pola (Cala del Gosetes or Caleta dels Gossets).
Redcanina.es has an interactive map showing where the beaches are.
I know you will see more dogs on beaches in the winter around here but owners are still liable to a fine even if the police presence is not so strong in the winter months.

Apparently the one they are trying to allocate in Torrevieja should be in place by spring! but they said that last year

Thank you .