summer (on the lunisolar calendar: 16th day of the 4th month to the 15th day of the 7th month)

summer term (e.g. school), summer period

summer vacation, summer holiday

suffering from summer heat, summer heat fatigue

suffering from summer heat, summer heat fatigue

summer season, summer, summertime

early summer, fourth month of the lunar calendar

middle of summer, height of summer, midsummer

summer solstice

this summer, next summer, last summer

cool summer, cold summer, cooler-than-normal summer

summertime, summer season

summer clothing, summer wear, summer goods

summer clothing, summer wear, summer goods

Summer Tournament (held in Tokyo in May)

daylight saving time, daylight savings time, summer time

summer festival, summer matsuri

spring, summer, autumn (fall) and winter...

summer festival, summer matsuri

summer festival, summer matsuri

summery mountain, mountain that is often climbed in summer

summer clothes, summer wear, summer uniform

hot summer day, day on which the temperature reaches at least 25°C

summer grass

midsummer, height of summer

day on which the temperature rises above 30°C

late summer, sixth month of the lunar calendar

everlasting summer

blisteringly hot, relentlessly hot, scorching

summer clothes