When I was sub 80Kg, rather than my curent 94.9Kg, I didn't mind the heat so much as my body fairly efficiently sweated off the heat. I'd still head out for several hours when the local stations were reading ~32C, but hold back on max efforts up climbs to conserve the fluid in my bidons.
But in the last couple of years, not only do I burn up with my extra insulation blubber once it gets warner than ~24C, but it feels like my hayfever has got worse (in terms of really tired eyes rather than anything else). That might be because hayfever results in histamine buildup and long covid is believed to increase histamine levels circulating.
So in some ways, I enjoy riding September to March. But I hate getting cold, so I'll rarely head out when it's under ~13C and it will be turbo time instead (as it is when it's raining or the roads are damp from earlier rain, I don't want a load of South Downs grit thrown all over my drivetrain).