It was at the most -10C and now it's 9PM and -22C here in Sweden. The sun felt very warm despite the cold air. It is much warmer now than it was in February. I opened some windows and went out with out a jacket.
The atlantic sea keeps getting colder and colder until late march and sometimes even until early april. You should have -20 or -30 degrees cold every winter if it wasn't for your gulfstream buffert.