Kotor itself doesn't have a beach worth mentioning — the old town sits directly on the water without any real swimming spot. The good news is that decent beaches, from quiet pebble coves to the bigger sandy stretches Montenegro is known for, are all within a short scooter or car ride.
Inside the Bay of Kotor — quiet and close
The beaches inside the bay itself are small, mostly pebble or concrete platforms rather than sand, and calm because the bay is sheltered from open sea swell. Dobrota, a 10-minute ride north of Kotor along the water, has a long promenade with several small swimming spots directly off it — convenient, but not scenic in the way people picture "Montenegro beach." Further around toward Perast, small rocky coves appear along the road, mostly used by locals rather than organized as tourist beaches, with no facilities but genuinely quiet water.
Just outside the Bay — better sand, more open sea
Once you're past the narrow entrance to the bay near Herceg Novi, the coastline changes character — this is where you start finding proper sandy beaches with open Adriatic water rather than the calmer bay. Žanjic and the beaches around Herceg Novi are roughly 45 minutes to an hour from Kotor by scooter or car, and offer a genuinely different swimming experience than anything inside the bay itself.
Budva's beaches — the bigger draw
Budva, about 40 minutes from Kotor, is Montenegro's main beach resort town, and its beaches are considerably larger and better equipped than anything near Kotor — sun loungers, beach bars, water sports rentals. Mogren Beach, split into two coves right next to Budva's old town, is the most convenient and also the most crowded in peak season. Jaz Beach, a few kilometers further, is longer, sandier, and less packed, historically known for hosting large outdoor concerts.
Further south from Budva, Sveti Stefan — the famous islet-turned-luxury-resort — has a beach on either side of the causeway; one side is public, though facilities are limited and it gets busy given the view alone is a draw.
Honest notes on getting there
A scooter is the most practical way to reach any beach on this list without worrying about parking, which gets genuinely difficult near Budva's beaches in July and August. For beaches further out like Sveti Stefan, a car offers more comfort for the longer ride, especially if you're bringing beach gear rather than traveling light.
What to bring
Most beaches outside organized resort areas have no facilities at all — no umbrella rental, no showers, sometimes no shade. Water, sunscreen, and a beach towel are worth carrying with you rather than assuming you'll find them locally, especially for the quieter bay coves.
Timing your beach day
Montenegro's Adriatic coast gets genuinely hot from June through August, and beaches near Budva fill up fast on weekends and in peak season — arriving before 10am or after 4pm gets you meaningfully more space, especially at Mogren. Water temperatures are comfortable for swimming from roughly late May through early October; outside that window the sea cools quickly given the bay's depth and the surrounding mountains.
If you're combining a beach day with sightseeing, the quieter bay coves near Perast and Dobrota work well as a short stop on a scooter loop, while Budva's beaches are better suited to a dedicated half-day or full-day trip given the extra travel time and the appeal of actually settling in rather than passing through.