Is there mobile signal at the Cliffs of Moher?

Yes, but only 4G. We measured 20–50 Mbps at the visitor centre and O'Brien's Tower, dropping as you walk south along the cliff path. It is enough for maps and messaging, not for uploading a long video.

Does an Ireland eSIM cover Northern Ireland?

No, not usually. Northern Ireland is part of the UK, so it needs UK coverage. If your trip includes the Giant's Causeway or Belfast, choose a plan that lists both Ireland and the United Kingdom.

Is coverage good enough to drive the Wild Atlantic Way?

It depends on how much you rely on live navigation. Towns are fine, but Connemara, the Ring of Kerry and mountain passes have real dead zones. Download the offline map for your whole route before setting off.

Ireland eSIM speed test: Dublin, the Cliffs of Moher and the Wild Atlantic Way

The Cliffs of Moher on the Atlantic coast of Ireland under dramatic cloud — Cliffs of Moher: 4G at the visitor centre, weaker along the coastal path.

Short answer · ≈55 Mbps national median

Ireland is fine in the cities and thin on the west coast. Dublin and Galway carry 5G at 90–180 Mbps, the Cliffs of Moher and Ring of Kerry sit on 4G at 15–50 Mbps, and Connemara and the mountain passes have genuine dead zones. Download your route offline before driving the Wild Atlantic Way.

How we tested: Speedtest by Ookla on a phone using a traverrsim eSIM, three runs per location, median reported, outdoors unless stated. Your own numbers vary with crowds, weather and handset — run the same test on arrival and compare.

Results by location

Mobile data speed test results at Ireland tourist locations
Location	Network	Download	Upload	Ping
Dublin — Temple BarCity centreStrongest area in the country.	5G	140–220 Mbps	28–45 Mbps	21 ms
Dublin AirportTerminal 2 arrivalseSIM attaches before passport control.	5G	120–200 Mbps	25–40 Mbps	22 ms
Trinity College / Grafton StDublinIndoor signal weaker in old stone buildings.	5G	100–170 Mbps	22–38 Mbps	23 ms
GalwayLatin Quarter5G through the centre and the docks.	5G	80–150 Mbps	18–32 Mbps	25 ms
Cliffs of MoherVisitor centre and O'Brien's TowerDrops noticeably along the southern coastal path.	4G	20–50 Mbps	8–16 Mbps	38 ms
Ring of KerryKillarney to SneemSeveral kilometres with no usable data.	4G	10–40 Mbps	5–14 Mbps	42 ms
ConnemaraSky Road / ClifdenWeakest area we tested in Ireland.	4G	5–25 Mbps	3–10 Mbps	50 ms
Killarney National ParkMuckross areaUsable on the main loop, thin in the woods.	4G	15–45 Mbps	6–15 Mbps	40 ms
CorkCity centreReliable across the island quays.	5G	90–160 Mbps	20–35 Mbps	24 ms
Giant's Causeway roadAntrim coast (Northern Ireland)Note: Northern Ireland is UK coverage, not Ireland.	4G	15–55 Mbps	6–18 Mbps	36 ms

Frequently asked questions

Is there mobile signal at the Cliffs of Moher?: Yesbut only 4G. We measured 20–50 Mbps at the visitor centre and O'Brien's Tower, dropping as you walk south along the cliff path. It is enough for maps and messaging, not for uploading a long video.
Does an Ireland eSIM cover Northern Ireland?: Nonot usually. Northern Ireland is part of the UK, so it needs UK coverage. If your trip includes the Giant's Causeway or Belfast, choose a plan that lists both Ireland and the United Kingdom.
Is coverage good enough to drive the Wild Atlantic Way?: It dependson how much you rely on live navigation. Towns are fine, but Connemara, the Ring of Kerry and mountain passes have real dead zones. Download the offline map for your whole route before setting off.

Other speed tests

Last updated 2026-08-19