South Ronaldsay tide times

South Ronaldsay is the southernmost of the main Orkney islands, connected to the Mainland by the Churchill Barriers — four concrete causeways built during the Second World War to block the eastern approaches to Scapa Flow after a German submarine entered through Kirk Sound in October 1939 and sank the battleship HMS Royal Oak with the loss of 833 men. The Barriers were constructed largely by Italian prisoners of war, who also built the Italian Chapel on Lamb Holm — a Nissen hut transformed into a decorated chapel that still stands and still functions. The spring tidal range at South Ronaldsay is 3.2 metres above Chart Datum; the waters around the Barriers are complex and run with strong streams through the gaps between the islands.

Burwick at the southern tip is the closest point on Orkney to the Scottish mainland, with the Pentland Firth 12 kilometres wide at this narrowing. The tidal flow through the Pentland Firth approaches off Burwick runs at 10 to 12 knots at springs, making these waters among the most dangerous for small craft in the UK. Hoxa Head on the western side of the island overlooks the main southern entrance to Scapa Flow — the deep-water passage through which the Grand Fleet moved and from which it sortied for the Battle of Jutland in 1916. Views from Hoxa Head take in the full expanse of Scapa Flow, the cliffs of Hoy, and on clear days the Caithness coast of the Scottish mainland.

The Italian Chapel on Lamb Holm, the first island crossed on the road south from Kirkwall, is one of Orkney's most visited sites. The interior was decorated by POW artist Domenico Chiocchetti and fellow prisoners using paint, concrete, and salvaged materials; the trompe l'oeil brickwork and ironwork are meticulous enough that first-time visitors often reach out to touch what appears to be carved stone and find painted plasterboard. Chiocchetti returned in 1960 and again in 1964 to help restore the work. The chapel is a functioning Catholic place of worship, open daily, with no admission charge.

The east coast of South Ronaldsay faces the North Sea and has sandy beaches accessible at low water. St Margaret's Hope, the main village, sits on a sheltered bay on the northwest side facing into Scapa Flow. The village has a small harbour with a regular ferry connection to Houton on the Mainland and a handful of restaurants and accommodation options. The Hope — the Old Norse word for a small sheltered bay — is calm at all states of tide; swimming is possible here in summer when water temperatures in Scapa Flow reach 13 to 14 degrees Celsius.

Fishing from South Ronaldsay centres on the eastern beaches and the rock marks at Burwick. The Sand of Wright on the northeast coast produces flatfish — plaice and flounder — in the shallow sandy shallows on the incoming tide. Bass are present around the Pentland Firth approaches in summer; Coalfish and pollock are the more consistent catches from the rocky southern shoreline on lures. The deep water of Hoxa Sound is boat-fishing territory for cod and ling in autumn and winter.

The concrete blockships deliberately sunk to narrow the channels before the Barriers were built stand clear at low water near Churchill Barrier No. 1, rusting dramatically against the Scapa Flow backdrop. The combination of the blockships, the causeway, the Orkney sky, and the water in different light conditions makes this one of the more compelling photographic subjects in the north of Scotland.

Tidal predictions here use the Open-Meteo Marine gridded model (±45 minutes on timing, ±0.3 m on height). Not for navigation.