Haar or sea fret is a cold sea fog. It occurs most often on the east coast of England or Scotland between April and September, when warm air passes over the colder North Sea.
Haar is typically formed over the sea and commonly occurs when warmer moist air moves over the relatively cooler North Sea causing the moisture in the air to condense, forming haar.
Sea breezes and easterly winds then bring the haar towards the coast where it can continue for several miles inland. This can be common in the UK summer when heating of the land creates a sea breeze, bringing haar in from the sea and as a result can significantly reduce temperatures compared to those just a few miles inland.
For several days this fog has covered much of the coastline around Saltburn and its whispery fingers have reached the short distance into the woodland that stretches down to the beach.
Image (c) Ian Forsyth
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