How warm is the sea around the UK?

December 8, 2012 — Leave a comment

Air masses arriving over the UK at this time of year are influenced by the sea temperature they travel over. Dry, very cold easterly winds from a frigid continent arrive at the UK by travelling over a warm-ish North Sea (currently 9C). These winds are warmed from below and can pick up enough moisture to deposit snow over eastern counties.
Note Atlantic sea surface temperatures are still over 10C even well into December, hence any winds from this direction are likely to be relatively warm and wet but not snowy.

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