I'm quite far north and this time of year the sun is only really down for a couple of hours before it starts coming back up so the daylight feels constant. Its hot and humid as well and everything just feels so intense. I'm not a big fan soaking up the sun as I find it makes me feel quite agitated, like it gets right under my skin.
I've had a couple of periods at this time of year where I've genuinely worried for my sanity but always ultimately known that I still have a handle on reality. Im talking about things like minor delusions or hallucinations (this has only every happened once or twice). I also can get very obsessive about odd things around this time of year.
This year like most years I just feel very out of it, no actually delusions or anything just like a feeling of pressure or adgitation. I think it might be like a version of seasonal affective disorder? I am at my best in the autumn and winter and I even love january and february the wet and wild weather but high summer just gets right under my skin.