夏

hardy amaryllis (Lycoris squamigera); resurrection lily; surprise lily; magic lily

suffering from summer heat

daylight saving time; daylight savings time; summer time

Buddhism

summer retreat where monks stay in the same place to study

Millettia japonica (species of flowering plant)

goumi (species of oleaster, Elaeagnus multiflora); cherry silverberry

summer daikon

summer term (of school); summer quarter

natsumikan (Citrus natsudaidai); Japanese summer orange

crops planted in summer

Internet slang; Derogatory

summerfag; young and inexperienced user who joins an online community during the summer

summer play

estivation

summering; spending the summer

Slang; From 夏 and 熱い

blisteringly hot; relentlessly hot; scorching

Obsolete term

end of summer

sixth month of the lunar calendar

hot summer

Tangut (language)

summer

bush clover blossoming in the summer (esp. Lespedeza thunbergii)

summer fog; summer mist

oldham blueberry (Vaccinium oldhamii)

summer cicadas

Tropic of Cancer