The National Trust beach of Whistling Sands or Porthor was once an important port serving the local area. Lying at the north-western tip of the Llyn peninsula, its sandy beach is backed by banks of sand and boulder clay, becoming rocky towards the northern end. Parking is on grass at a National Trust car park, with a P&D machine for times when it is not attended. There is some space for roadside parking near the lane to the car park. Access to the beach is a walk of about 300 yards further down the lane, where there is a cafe / beach shop almost on the beach. Easier roadside parking can be found by continuing northwards along the lane to its next junction. A little further on, a footpath leads down to the northern end of the beach.
The sand here consists mostly of rounded grains of quartz of a uniform size, which under dry conditions make a squeaky sound when walked upon - hence the name Whistling Sands. Surf conditions can be good in winter either side of high tide and with a south-west wind, but it can get busy. It's a good choice if Hell's Mouth is blown out, but make sure you know where the rocks are! Dogs are not allowed between 1st April and 30th September.