Yet, head a few miles inland and the chances are the skies will clear and temperatures will shoot up.
Here are 15 ideas of things to do and places to go to escape the fog.
1. Alnwick
The historic town of Alnwick has a vibrant cafe scene, lots of lovely independent shops, an amazing castle and the fabulous Alnwick Garden. It also has a market day on Thursdays and Saturdays. Photo: Ian Smith
2. Northumberland National Park
The peace and beauty of Northumberland National Park is wonderful, especially so in the less crowded northern section in places such as Breamish and Ingram Valley. Photo: Jane Coltman
3. Cragside
Cragside, the National Trust property near Rothbury, was the creation of Lord Armstrong, the Victorian inventor and industrialist. The grounds are stunning and the house is fascinating. You will need to book your visit in advance. Photo: Jane Coltman
4. Etal
Etal is such a pretty village and includes a lovely tearoom, a thatched roof pub, a castle and lovely walks by the River Till. And you can catch a train to nearby Heatherslaw. Photo: Jane Coltman