There is no tense in Spanish that resembles the English future progressive, which expresses actions or situations in progress in a future time that do not continue indefinitely. But there is a verbal periphrase constructed with the future tense of the verb estar (estaré, estarás, estará, estaremos, estarán) + the gerund of the verb that expresses the action or state that resembles the English present progressive.

Estaré surfeando en la playa todo el fin de semana.