If you’re at the coast over December, then expect some wind. That means learning to hit shots with a lower trajectory into the wind.
There are five techniques to remember: club up; choke down; ball back; weight forward; swing easy. 

The final advice to swing easy often leads to golfers swinging with just their arms; there’s no shoulder turn.

Whether you’re going to play in the wind or not, if you want to add consistency to your ball striking,
practice a good swing tempo. Choose a target, go one club higher than you would usually choose,
choke down on the grip, ball slightly back in the stance, and swing with a good tempo. Ball flight lower?
More accurate? Does your consistency improve? Want some help with this?