Hi, we were there Feb last year, it wasn't warm, but we had taken hats/scarfs etc and didn't use any of them, except for after dark, when it was cold.
I even remember taking our coats off one day!
We certainly weren't put off that time of year, as we have booked to go again next Feb!
EMH were quiet, and it would get busier later in the day, but we were there during UK school half term.