Estoril has slightly more going on after dark than its neighbour Cascais. There are a few decent bars around the town and, of course, the casino. On Fridays and Saturdays parties can go on well beyond dawn.
When it’s too cold to party on the beach, during the winter months, most late-night activity in Estoril goes on at Jezebel (Casino Estoril, Estoril; +351 21 466 7857). In the same building as a the famous Casino Estoril, the beautifully laid out club has a big dance floor and comfy sofas to lounge around with cocktails in. There is a certain Euro-chintz air, which adds to the fun.
Alternatively, Tamariz (Praia do Tamariz, Estoril) is the kind of place where you can dance with the sand between your toes until dawn. This beach club has everything you need for a night out on the beach. Summertime does tend to mix with school and uni holidays though, so the vibe is young, with randy young couples sneaking off between the beached rocks for amorous moments of privacy. Usually the hardcore hang out until dawn on the outer deck beanbags watching the sunrise over the ocean.