I have fair skin, is this hyperpigmentation post laser hair removal? (Photo)

It's difficult to tell from your picture. I recommend getting a formal evaluation with a cosmetic dermatologist. Hyperpigmentation can be improved with a combination of lasers, Aerolase, microneedling/prp, skin lightening, peels, and skin care. Sun protection is essential. See an expert. Best, Dr. Emer

Having laser hair removal anytime of the year, there can be some irritation, pigmentation and redness post treatment associated with the procedure. Continue with your treatment sessions and seek the advice of your skincare professional to help address any issues. Usually, these issues to resolve on their own or with the aid of a professional skincare product.

It sounds like you did all you could to minimize sun exposure. Your practitioner should take a good look at the area. If it is PIH, I usually suspend treatment until it resolves. If it doesn't resolve, there are a variety of skin treatment approaches that can be used to reduce the pigmentation.