It is true that the popularity of Instagram hashtags changes over time, as well as by location. However, at the time of writing this post the most popular hashtags are #instagood, #photooftheday, #fashion, #beautiful, #happy, #cute, #tbt, #like4like, and #followme. There are some hashtags that are seasonally specific. For instance, #summer may be the most popular right now, but when winter comes around, it will fall out of favor. The popularity of #valentinesday soars every year in February, while the popularity of #christmas soars in December. As we near the end of the year, the popularity of #sale rises.