Basher said..
If you have a relationship where your partner understands that you go windsurfing when it's windy, then a windy Xmas Day is no different, except that there may be visitors to consider.
If you have teen youngsters in your house then they too may want to go windsurfing.
In that sort of a family, you all just agree to have Xmas lunch in the evening.
My top tip is for the key windsurfing family member to volunteer to cook the dinner, by way of compensation.
In a southern hemisphere climate, having a BBQ lunch on the beach on Xmas Day is also fine.
Note that some people also celebrate Xmas on Xmas Eve - or not at all.
In all other situations, negotiation is good.
In practice, here in the UK, where the winter days are so short, the chance of wind and waves and tide times coinciding to allow an early Xmas Day session is highly unlikely. And this year, for the south coast, we have no wind forecast anyway.
So maybe it's best kept as a family day. In our case, we may go paddle boarding in the morning, or else go for a walk.
My sister lives in Ireland send her a wave from across the way

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She's wanting to get to her holiday home in Portugal, plus she's got the Covid loogy in isolation, at home in Ireland.
Her place is only an hour away from Nazare`. Absolutely love to see those Mavericks ride those monster waves. Gotta be there at the right time.
Been wanting to see her on many levels but F...ing Covid has made short work of that opportunity.
Does 2022 give us a safe, realistic way to move again, without fear of being trapped?
The uncertainty is the fear.
Bless & prey this Xmas for a non Covid 2022.