Cherry blossoms typically last about 4 to 10 days once they open, depending heavily on the weather conditions. Cool, calm weather can extend the bloom period, while warm, rainy, or windy weather can shorten it significantly

. More specifically:

• In general, cherry blossoms last around one week, with the peak bloom period (when about 70% of blossoms are open) lasting just a few days, often 2 to 3 days

• Under ideal conditions, the blossoms can last up to two weeks after peak bloom

• In Japan, cherry blossoms usually last 10 to 14 days, with full bloom reached about one week after the first blossoms open

In summary, cherry blossoms last roughly one week on average, with a range from about 4 days to 2 weeks depending on species and weather factors. The peak bloom period itself is quite brief, typically only a few days.