I think you have to treat carp or any fresh water non migratory fish as solar panels, they'll always gravitate towards heat.
It's always been common knowledge to be on the end of a new wind, but this doesn't always sit well with me.
I tend to look at the temperature of the wind in relation with the daily temperature. If say the daily temperature is 10 degrees, but the wind temperature is going to bring it down by a couple of degrees I'd tend to fish in the back of it, at the calmer end, if the sun was out.
Angling pressure plays a big role, particularly on smaller venues. The times I have found best are when the majority of anglers are packing up after ca weekends fishing. Usually Sunday afternoon, if you can tailor your fishing to this time, you certainly put the odds in your favour.
I've fished right from Friday mornings until Monday nights, and bites didn't usually start until Sunday afternoon, and this isn't an isolated event either.
I think the fish know when they are being targeted the most and for the better part behave in a more cautious manner.
I'm not a big believer in high or low pressures nowadays, to many waters have bigger decisive factors.
I try to imagine where I would be comfortable and start looking there, sunny, calmer water, or away from pressure.
Another aspect I will point out though that never really gets mentioned is how you approach your swim.
A lot of anglers in my opinion ruin their own fishing before they have even started, I can't remember who said it now, but it's always stuck with me.
If the fish know your there, you've already halved your chances.
It particularly prevalent in my case because I do fish small waters and know how carp react to anything out of the ordinary.
I used to spend a lot of time watching my quarry, seeing how they approach a certain spot, seeing where they go, to try and see if any patterns emerge, this in itself can teach you an awful lot.
There's a lot written about Thermocline's as well, as fish spend most of their lives mid water due to differing temperatures. I think I'm right in saying, in winter, carp will usually be at the bottom of the middle third.
Roughly translated
Split the depth up into thirds, so if you have 12ft of water, the lower third will be 0 to 4ft, the middle will be 4 to 8ft and the upper will be 8 to 12ft.
The theory is cold water sinks, until it reaches a layer on the bottom of the middle third where it starts to warm up again and starts to rise.
(please correct me if im wrong this is just from memory)
The bottom third is pretty much a constant temperature, and fish won't want to feed if it's colder in that layer.
I think that's right lol
Slight correction
As water cools it sinks, once it reaches 3 degrees it rises again again