Hello~It looks like you may have a deficiency of Vitamin C and Bio-flavonoids. If you are low on both, you will certainly bruise easily. These two vitamins are available in your local health food store, I would try some and see if they work. It will take about a week to start noticing some improvement. I am not sure why you are just doing this in the summer though. I think I would ask your doctor or a dermatologist,.
Ha, your post made me giggle. You burst into flames in the sun. ha. That's funny stuff! But not funny that it happens. So, this is only at certain times of year? That's strange. There are all sorts of reasons why someone randomly bruises and bruises easily. Vitamin deficiency is a big one. Do you have any medication changes around that tie of year? Do you party more? (liver issues can increase this as can alcohol consumption). Most other things this is related to are not normally 'seasonal'. When all of the deadly virus stuff blows over, I'd personally schedule a physical and talk about this issue with your doctor. https://www.medicalnewstoday.com/articles/325525#causes I guess most of the time it is not something to be concerned with beyond the aesthetics of it but you'd want to make sure that is the case for you. Does self tanner help cover it? I mean, they make some good ones now that don't turn you orange. The one seasonal thing I've read about that can be related (possibly) is lupus. With lupus, you can have low platelet count and sometimes anemia and I've read that many will get the bruising you describe during warmer months. Would lupus be something at all that could be going on? https://familydoctor.org/condition/lupus/ Here's an article that talks about some other things to look for with lupus: https://www.healthline.com/health/lupus/early-signs
Let me know what you think!