also: しゅんか
noun
spring and summer
Refers to the two seasons together, often used when discussing seasonal activities, weather, or clothing that spans both spring and summer.
春夏の衣替えはいつも慌ただしい。
The seasonal wardrobe change for spring and summer is always hectic.
この地域では春夏に多くの観光客が訪れる。
Many tourists visit this area in spring and summer.
Compound of 春 (spring) and 夏 (summer). The reading はるなつ uses the native Japanese readings, while しゅんか uses the Sino-Japanese readings.