Question: Is there any difference in hair growth rate between summer and winter?
Answer: The average rate that hair grows per month is about 1.2cm which means approximately 5 and 3/4 inch each year. Scalp hair does grow faster in the summer months or warmer periods, but to an extent that is not hugely noticeable – about 10 to 15% due to increased circulation.
However, hair growth does actually slow with age. This is generally not a cause for concern, but if hair growth slows and becomes finer or thinner in addition, it could be a sign of hair loss. A professional diagnosis would be needed to confirm or refute this, but then there are hair loss treatments that are proven to be able to help stabilise loss and generate regrowth if this were the case.