Hisayo is of Japanese origin, derived from the characters "日和" which mean "weather" and "good". It's a unisex name, but it's more commonly used for females in Japan. The name Hisayo implies someone who brings positivity and pleasantness, much like fair weather. In recent years, it has gained international recognition due to its unique sound and meaning.
"While there's a gap between 1900 and 1914 with no recorded births of Hisayo, the years 1914 to 1924 show consistent activity, peaking at 10 births in 1919. The total number of births over this period is 69."