The material your pads are made out of can significantly affect this. I swapped from leather pads to suede and I find the new ones far warmer than the old but that doesn't bother me.

If you can experiment with different pads you might find something that works for you.

Though be warned that the material can also affect the house cancelling performance so you have decided on that compromise too.

This is why "on ear" headphones exist vs "over ear".

Depending on your level of comfort, over-ear headphones can be less or more hot than on-ear ones (rests around the ears vs on the ears). Openback headphones are open on the sides so they theoretically should be cooler as well.

Take off the headphones!

I've not tried them but you can get replacement pads which apparently have a cooling gel in them. Eg these.

No idea if they're any good but would be interested in hearing from someone with first-hand experience.

I swap between my speakers, headphones and IEMs. Good way to keep your ears from feeling too hot (from headphones) or fatigued (from IEMs). For most listening I use speakers but if there are other people around, I'll use my headphones since they're more comfortable and sound better than my IEMs.

https://m.youtube.com/watch?v=Hp2DgRr2DGM

I've mostly transitioned to using in-ear headphones instead of over-ear, partially for this reason.

The other reason being the far less space they take up.

The con is that the battery life is not as good and the sound quality I guess is arguably a bit worse, but on balance I find the tradeoff worth it

The answer is metel monitor style headphones with molded plugs. A lot of the times your ears get hot is the ear buds or cups are not shaped right for your ears and it irritated them and then they get hot.

Try on-ear headphones, like the Koss KPH40s and Koss Porta Pros. A pair of Koss KSC75s on a cheapo lightweight headband has been my professional and home setup for years now and I can wear them for hours and hours on end without fatigue.

You can also go with in-ear monitors. I personally get a mild headache from the audio seal, so I tend not to wear them for too long. Check out Crinacle and Hangout Audio for IEM recommendations.