Heavy Seas Along Iceland’s Coast Could Cause Temporary Road Closures
An unusually deep low-pressure system, large waves and high tides could cause seawater to reach coastal roads and harbor areas in parts of Iceland. The Icelandic Road and Coastal Administration has warned of possible temporary closures of the Ring Road near Vík and is preparing permanent coastal defenses in the area.
Heavy seas are accompanying an unusually deep low-pressure system moving across Iceland. The Icelandic Road and Coastal Administration, Vegagerðin, has warned that powerful waves and elevated sea levels could cause seawater to reach roads and harbor areas, particularly along exposed coastlines.
Although such conditions are familiar in Iceland, they can cause temporary transport disruption and require additional caution.
According to a forecast published by Vegagerðin on 14 October, atmospheric pressure in the storm system could fall to 934 hectopascals (hPa). Such low pressure can contribute to higher sea levels, particularly when strong winds push water toward the coast.
Eight-metre waves near Vík
Near Vík í Mýrdal, waves approximately eight metres high were forecast offshore, approaching from the south.
Vegagerðin expected the largest waves to coincide with high tide on the evening of Wednesday, 14 October, between 7 p.m. and 9 p.m.
Under these conditions, seawater can reach farther inland than usual, with waves breaking across low-lying coastal areas and roads.
Vegagerðin considered a temporary closure of the Ring Road near Vík likely during the period of strongest wave activity.
In December 2025, seawater crossed the road in this area during similar conditions. However, such wave overtopping does not necessarily mean widespread flooding or a prolonged transport disruption.
The authority had also planned an alternative route along the hillside near the golf course to maintain emergency access if the road needed to close.
The information available for this report does not confirm that the anticipated closure actually took effect.
Why does seawater reach farther inland during storms?
When a deep low-pressure system moves across the ocean, several factors can affect sea levels and wave activity.
Low atmospheric pressure can contribute to rising sea levels, while strong winds can push water toward the coast. If these conditions coincide with high tide, the sea level is already elevated.
Large waves may then break farther up beaches, carry gravel and rocks onto roads, and temporarily disrupt transport where roads run close to the shoreline.
This does not mean that widespread flooding of populated areas is necessarily expected.
An offshore wave height of eight metres also does not mean an eight-metre wall of water will sweep across the land. The effects depend on sea level, wave direction and local coastal conditions.
Possible wave overtopping at Sauðárkrókur and Húsavík
Vegagerðin also warned of heavy seas along Iceland’s northern coast.
At Sauðárkrókur, seawater was considered capable of crossing Strandvegur after midnight in the early hours of 15 October, potentially carrying gravel or stones onto the road.
At Húsavík and Sauðárkrókur, large waves could also affect harbor areas, particularly where northerly winds and high tide coincide.
These were forecasts and risk assessments, not confirmed reports of damage at those locations.
Large waves forecast off eastern Iceland
Off southeastern Iceland, offshore wave heights exceeding ten metres were forecast.
Vegagerðin noted that wave direction could increase wave activity near harbors at Djúpivogur, Breiðdalsvík and Stöðvarfjörður.
However, the effects depend on local conditions, including harbor orientation and the protection offered by surrounding land.
Large waves offshore do not automatically translate into flooding inside harbors or nearby communities.
Permanent coastal defenses planned near Vík
Repeated wave overtopping near Vík has also raised questions about the long-term protection of the Ring Road.
Vegagerðin has applied for a construction permit for protective embankments intended to reduce the risk of seawater reaching the road.
According to the authority, preparations are well advanced, with the project expected to go out to tender once the permit has been obtained.
The information available for this report does not confirm that the permit has been granted or that construction has begun.
The aim is to reduce the likelihood of repeated closures and improve safety along this important section of the Ring Road.
Temporary conditions — check before traveling
The greatest wave activity is linked to particular weather and tidal conditions, so the risk may ease as the weather and sea level change.
Travelers are advised to check Umferðin.is for current road conditions before setting out and consult Sjólag.is for wave and sea-level forecasts.
This article is based on warnings and forecasts issued by Vegagerðin on 13 and 14 October 2026. Forecast wave overtopping and possible road closures should not be interpreted as confirmation that those events have occurred.
Sources: Vegagerðin; Umferðin; Sjólag