Causeway Coast, County Antrim, Northern Ireland
The Giant's Causeway draws 1 million visitors a year. The basalt columns are extraordinary in any conditions — but the experience is transformative with the right light and tide. CoastMetric helps you find that moment.
About Giant's Causeway
CoastMetric is a real-time conditions app built for coastal visitors. It combines live weather, tides, Atlantic swell, air quality and path conditions into a single Visit Score — helping you time the perfect visit to Northern Ireland's most iconic natural landmark.
The Giant's Causeway is a UNESCO World Heritage Site on the exposed north Antrim coast. The basalt columns are wet, uneven and highly slippery at all states of tide. Atlantic waves can reach far onto the columns without warning. Data shown is gathered from third-party sources and may not reflect current on-the-ground conditions.
Walking Routes
Check the live Visit Score before you set out — conditions here change fast.
From the NT visitor centre down to the columns via the coastal path, returning via Shepherd's Steps for the elevated view. The basalt is extremely slippery when wet — grippy footwear essential.
Walk west from the Causeway to Portballintrae and Runkerry Beach, returning via the cliff path. Quieter than the main site and with wide Atlantic views back to the columns.
Key Features
The main platform of ~40,000 interlocking basalt columns formed 60 million years ago. Most are hexagonal. Lower sections are wave-washed at high tide — check sea state before descending.
Dramatic vertical basalt columns on the cliff face above the Causeway — up to 12 m tall, named for their resemblance to organ pipes. Visible from the coastal path above.
Stepped cliff path giving the elevated view of the Causeway and coastline. Steep and exposed — rewarding on a clear day with views east toward Scotland.
Ancient Irish fortification on a dramatic sea-stack headland — accessible via 2 km of the Causeway Coast Way east. One of the oldest sites in Ireland, mentioned in the Annals of Ulster.
Live Data
All data is fetched from authoritative UK sources and recalculated every few minutes.
Safety Information
National Trust manage the site. Do not jump between the columns — injuries are common. The cliff path above the Causeway has steep, stepped sections. The Shepherd's Steps path is the most demanding ascent. Stay back from wave-washed areas of the columns. Water quality monitoring is by NIEA (Northern Ireland Environment Agency), not shown in this app.
All data, scores and recommendations are for general informational purposes only and should not be relied upon as the sole basis for safety decisions. The Visit Score is an algorithmic estimate — it is not a substitute for your own judgement, local signage or official guidance.
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