I don’t know if this years is very special … I mean the weather. But it’s January and we have sunny all day long, and tourists go to the beach.. stay in the sun, and in the evening some of them look as if they had been too long in the sun 
They are sunburned …. and I don’t think that’s a good feeling 
Last year we spent Wintertime on Tenerife, and I can remember the weather was often foggy, cloudy and rainy. And it was cold! We had to wear jackets all the time.
So I’m not sure, if the weather is better this year on every Canary Island, or if the weather is better on La Palma… and Tenerife is in a bad-weather-zone (at least in Wintertime) ….. But why do so much people spend Wintertime on Tenerife? Do they like this foggy weather? Some of these longtermtourists has told us, that the weather on Tenerife used to be better in earlier times, and it turns to be a bit more bad every years… who knows.
But if it is so, I guess, lots of tourist will change her destination… and come to La Palma in the future.