Major spring tide: 23–26 January 2027
A major spring tide is forecast on 23–26 January 2027 along the Atlantic coast and the English Channel, around the full moon. The tidal coefficient peaks at 107 (SHOM reference, port of Brest), with the strongest tides around 25 January. The sea drops very low and rises very high — one of the largest tidal ranges of the season.
What the coefficient means
The tidal coefficient (SHOM) runs from 20 (neap tides) to 120 (exceptional tides). A spring tide is called "major" from 100 upwards. The higher it is, the greater the difference between high and low water. A coefficient of 107 signals a very large range.
Out on the shore
In winter big tides sometimes meet storms: the spectacle from the sea walls is superb, but stay well back from the waves and keep your distance.
Stay safe
The Brest coefficient gives the trend, but actual times and heights vary from port to port. Always check your own location's low-water time — and above all when the tide turns: on the foreshore the water comes back fast. See the high and low tides for your station below, or follow your favourite beaches with alerts in the Tidova app.