summer vacation;  summer holiday
 middle of summer;  height of summer;  midsummer
 early summer;  fourth month of the lunar calendar
 summertime;  summer season
 hyuganatsu (species of citrus, Citrus tamurana)
 summer sky;  summery weather;  clear, blazing summer weather
 suffering from summer heat;  summer heat fatigue
 summer cold (illness);  summer flu
 height of summer;  hottest part of summer
 day on which the temperature rises above 30 degrees Celsius
 rushing to one's doom;  (like a) moth flying into the flame
 Summer Triangle (asterism)
 summer plumage;  nuptial plumage
 whole summer;  summer long
 Chinese citron (Citrus natsudaidai);  bitter summer orange (mandarin)
 caterpillar fungus (esp. Cordyceps sinensis)
 midsummer;  height of summer
 hot summer day;  day on which the temperature reaches at least 25 degrees Celsius
 summer campaign of the siege of Osaka (1615 CE)
 summer cloud;  summer clouds
 summer insect;  summer insects
 summery mountain;  mountain that is often climbed in summer
 to become summerly;  to become like summer
 summer fur;  summer coat;  summer plumage
 amanatsu (Citrus natsudaidai);  sweet form of Chinese citron
 hyuganatsu (species of citrus, Citrus tamurana)
 land of everlasting summer
 Summer Tournament (held in Tokyo in May)
 losing weight over the summer
 room arranged for the summer (by removing screens and doors to improve air flow)
 summer overcoat;  light jacket
 booklet with homework assignments for the summer vacation
 suffering from summer heat
 daylight saving time;  daylight savings time;  summer time
 Milettia japonica (species of flowering plant)
 Japanese stewartia (Stewartia pseudocamellia)
 summer term (of school);  summer quarter
 summerfag;  young and inexperienced user who joins an online community during the summer
 blisteringly hot;  relentlessly hot;  scorching
 bush clover blossoming in the summer (esp. Lespedeza thunbergii)
 Chinese citron (Citrus natsudaidai)
 daylight saving time;  daylight savings time;  summer time
 near summer;  end of spring
 4th month of the lunar calendar
 taking whatever one can get one's hands on;  being greedy; (lit.) accepting a padded silk sleeve even in summer
 pasturing cattle in summer and feeding them indoors during winter;  rotated grazing
 villa arranged appropriately for summer;  mansion arranged appropriately for summer
 sweet (variety of) Watson pomelo
 sweet form of Watson pomelo (Citrus natsudaidai f. kawanonatsudaidai)
 summer tide;  tide reflecting the summer sun
 goumi (species of oleaster, Elaeagnus multiflora);  cherry silverberry
 oldham blueberry (Vaccinium oldhamii)
 Calanthe reflexa (species of orchid)
 amanatsu (Citrus natsudaidai);  sweet form of Chinese citron
 midsummer;  height of summer