The combined mountain park and marine reserve offers good opportunities for hiking and mountain biking, and has several sights of historic and architectural interest. The park can be also be accessed from Peñiscola; the Peñiscola tourist office has an online list of hiking trails with trail descriptions in English; an official trail map (in Spanish) can be downloaded here.
The same company also runs multiple daily buses between Castellón and Alcalà de Xivert, stopping at the train station and at a bus stop near the football pitch on Carrer del General Cucala. As an alternate option, and provided you do not have too much luggage, you can then transfer at either of these stops to the local bus service, detailed below in 'get around'. A bus route and schedule can be downloaded here.
More information available on Wikivoyage
No climate information is available for this destination.