| 夏 | なつ | summer | n5 |
| 初夏 | しょか | early summer; fourth month of the lunar calendar | n2 |
| 夏休み | なつやすみ | summer vacation; summer holiday | n5 |
| 真夏 | まなつ | middle of summer; height of summer; midsummer | n1 |
| 夏季 | かき | summer season; summer; summertime | n1 |
| 夏場 | なつば | summertime; summer season | |
| 夏期 | かき | summer term (e.g. school); summer period | n2 |
| 春夏秋冬 | しゅんかしゅうとう | spring, summer, autumn (fall) and winter; the four seasons | |
| 盛夏 | せいか | midsummer; height of summer | n2 |
| 常夏 | とこなつ | everlasting summer | |
| 夏服 | なつふく | summer clothes; summer wear; summer uniform | |
| 晩夏 | ばんか | late summer; sixth month of the lunar calendar | |
| 春夏 | しゅんか | spring and summer | |
| 夏野菜 | なつやさい | summer vegetables | |
| 夏至 | げし | summer solstice | n1 |
| 夏山 | なつやま | summery mountain; mountain that is often climbed in summer | |
| 夏蜜柑 | なつみかん | natsumikan (Citrus natsudaidai); Japanese summer orange | |
| 今夏 | こんか | this summer; next summer; last summer | |
| 夏本番 | なつほんばん | midsummer; height of summer | |
| 夏物 | なつもの | summer clothing; summer wear; summer goods | |
| 夏祭り | なつまつり | summer festival; summer matsuri | |
| 夏場所 | なつばしょ | Summer Tournament (held in Tokyo in May) | |
| 夏めく | なつめく | to become summerly; to become like summer | |
| 昨夏 | さっか | last summer; summer of last year | n3 |
| 立夏 | りっか | first day of summer (approx. May 6) | |
| 夏向き | なつむき | for summer | |
| 夏バテ | なつばて | suffering from summer heat; summer heat fatigue | |
| 夏野 | なつの | summer fields | |
| 夏日 | かじつ | summer day | n2 |
| 夏季休暇 | かききゅうか | summer vacation | |
| 真夏日 | まなつび | day on which the temperature rises above 30°C | |
| ひと夏 | ひとなつ | one summer | |
| 夏枯れ | なつがれ | summer slump | |
| 半夏生 | はんげしょう | Chinese lizard's tail (Saururus chinensis); 11th day after the summer solstice; last seed-sowing and rice-planting day | |
| 夏みかん | なつみかん | natsumikan (Citrus natsudaidai); Japanese summer orange | |
| 孟夏 | もうか | beginning of summer; fourth month of the lunar calendar | |
| 夏期休暇 | かききゅうか | summer vacation; summer holidays | |
| 夏痩せ | なつやせ | losing weight over the summer | |
| 仲夏 | ちゅうか | midsummer; fifth month of the lunar calendar | |
| 夏座敷 | なつざしき | room arranged for the summer (by removing screens and doors to improve air flow) | |
| 夏祭 | なつまつり | summer festival; summer matsuri | |
| 西夏 | せいか | Western Xia (1038-1227); Western Hsia; Tangut Empire; Mi-nyak | n2 |
| 夏蚕 | なつご | summer silkworms | |
| 夏まつり | なつまつり | summer festival; summer matsuri | |
| 日向夏 | ひゅうがなつ | hyuganatsu (species of citrus, Citrus tamurana) | |
| 消夏 | しょうか | summering; spending the summer | n2 |
| 半夏 | はんげ | crow dipper (Pinellia tuber); 11th day after the summer solstice; last seed-sowing and rice-planting day | |
| 夏空 | なつぞら | summer sky; summery weather; clear, blazing summer weather | |
| 夏草 | なつくさ | summer grass | |
| 夏もの | なつもの | summer clothing; summer wear; summer goods | |
| 夏安居 | げあんご | summer retreat where monks stay in the same place to study | |
| 季夏 | きか | end of summer; sixth month of the lunar calendar | |
| 夏やせ | なつやせ | losing weight over the summer | |
| 夏時間 | なつじかん | daylight saving time; daylight savings time; summer time | |
| 夏炉冬扇 | かろとうせん | summer fires and winter fans; useless things | |
| 夏冬 | かとう | summer and winter | n2 |
| 夏鳥 | なつどり | summer bird | |
| 毎夏 | まいなつ | every summer | |
| 華夏 | かか | Huaxia (historical concept of China); civilized land | |
| 夏越し | なつごし | keeping over the summer | |
| 夏季オリンピック | かきオリンピック | Summer Olympics; Summer Olympic Games | |
| 三夏 | さんか | three summer months | n4 |
| 夏木立 | なつこだち | grove in summer | |
| 夏官 | かかん | Ministry of War (Zhou dynasty China) | n1 |
| 冷夏 | れいか | cool summer; cold summer; cooler-than-normal summer | |
| 夏作 | なつさく | crops planted in summer | |
| 夏負け | なつまけ | suffering from summer heat | |
| 夏芽 | かが | summer bud | |
| 夏初月 | なつはづき | 4th month of the lunar calendar | |
| 夏至祭 | げしまつり | midsummer feast; summer solstice celebration; St John's day | |
| 常夏月 | とこなつづき | sixth lunar month | |
| 一夏 | いちげ | one summer (during which a monk attends a summer retreat) | |
| 夏中 | げちゅう | period during which monks may go into a summer retreat | |
| 夏橙 | なつだいだい | natsumikan (Citrus natsudaidai); Japanese summer orange | |
| 夏着 | なつぎ | summer clothes | |
| 夏衣 | なつごろも | summer clothes | |
| 夏雲 | なつぐも | summer cloud; summer clouds | |
| 有夏 | ゆうか | Mainland China | |
| 来夏 | らいか | next summer | |
| 夏時刻 | なつじこく | daylight saving time; daylight savings time; summer time | |
| 夏至線 | げしせん | Tropic of Cancer | |
| 夏じゅう | なつじゅう | whole summer; summer long | |
| 夏季五輪 | かきごりん | Summer Olympics | |
| 大阪夏の陣 | おおさかなつのじん | summer campaign of the siege of Osaka (1615) | |
| 寧夏回族自治区 | ねいかかいぞくじちく | Ningxia Hui Autonomous Region (China) | |
| 九夏 | きゅうか | summer | n2 |
| 夏時 | かじ | summertime | n2 |
| 暑夏 | しょか | hot summer | n2 |
| 銷夏 | しょうか | summering; spending the summer | n2 |
| 中夏 | ちゅうか | midsummer; China; capital (city) | |
| 夏い | なつい | blisteringly hot; relentlessly hot; scorching | |
| 夏厨 | なつちゅう | summerfag; young and inexperienced user who joins an online community during the summer | |
| 夏向 | なつむき | for summer | |
| 夏柑 | なつかん | natsumikan (Citrus natsudaidai); Japanese summer orange | |
| 夏椿 | なつつばき | Japanese stewartia (Stewartia pseudocamellia) | |
| 夏櫨 | なつはぜ | oldham blueberry (Vaccinium oldhamii) | |
| 夏毛 | なつげ | summer fur; summer coat; summer plumage | |
| 夏潮 | なつしお | summer tide; tide reflecting the summer sun | |
| 夏痩 | なつやせ | losing weight over the summer | |
| 夏眠 | かみん | estivation; aestivation; summer sleep | |
| 夏羽 | なつばね | summer plumage; nuptial plumage | |
| 夏菊 | なつぎく | early chrysanthemums | |
| 夏萩 | なつはぎ | bush clover blossoming in the summer (esp. Lespedeza thunbergii) | |
| 夏藤 | なつふじ | Millettia japonica (species of flowering plant) | |
| 夏虫 | なつむし | summer insect; summer insects | |
| 夏蝉 | なつぜみ | summer cicadas | |
| 夏霞 | なつがすみ | summer haze; summer mist | |
| 夏霧 | なつぎり | summer fog; summer mist | |
| 夏風 | なつかぜ | summer breeze; summer cold | |
| 夏館 | なつやかた | villa arranged appropriately for summer; mansion arranged appropriately for summer | |
| 小夏 | こなつ | hyuganatsu (species of citrus, Citrus tamurana) | |
| 炎夏 | えんか | hot summer; middle of summer | |
| 甘夏 | あまなつ | amanatsu (Citrus natsudaidai); Japanese summer orange; less sour variety of the natsumikan | |
| 夏かぜ | なつかぜ | summer cold (illness); summer flu | |
| 夏の月 | なつのつき | the (cool) summer moon | |
| 夏の虫 | なつのむし | summer insect; (like a) moth flying into the flame | |
| 夏ばて | なつばて | suffering from summer heat; summer heat fatigue | |
| 夏作物 | なつさくもつ | crops planted in summer | |
| 夏外套 | なつがいとう | summer overcoat; light jacket | |
| 夏大根 | なつだいこん | summer daikon | |
| 夏季熱 | かきねつ | summer fever | |
| 夏学期 | なつがっき | summer term (of school); summer quarter | |
| 夏布団 | なつぶとん | summer bedclothes | |
| 夏帽子 | なつぼうし | summer hat; straw hat | |
| 夏掛け | なつがけ | summer-use futon | |
| 夏水仙 | なつずいせん | hardy amaryllis (Lycoris squamigera); resurrection lily; surprise lily; magic lily | |
| 夏白菊 | ナツシロギク | feverfew (Tanacetum parthenium) | |
| 夏端月 | なつはづき | 4th month of the lunar calendar | |
| 夏羽織 | なつばおり | summer haori (coat) | |
| 夏至点 | げしてん | summer solstitial point | |
| 夏芝居 | なつしばい | summer play | |
| 夏茱萸 | なつぐみ | goumi (species of oleaster, Elaeagnus multiflora); cherry silverberry | |
| 夏近し | なつちかし | near summer; end of spring | |
| 夏風邪 | なつかぜ | summer cold (illness); summer flu | |
| 春夏冬 | あきない | not getting tired (of something); business; trade | |
| 昨年夏 | さくねんなつ | summer of last year | |
| 火夏星 | ひなつぼし | Mars (planet) | |
| 甘夏柑 | あまなつかん | amanatsu (Citrus natsudaidai); Japanese summer orange; less sour variety of the natsumikan | |
| 西夏語 | せいかご | Tangut (language) | |
| 冬虫夏草 | とうちゅうかそう | caterpillar fungus (esp. Cordyceps sinensis) | |
| 夏がすみ | なつがすみ | summer haze; summer mist | |
| 夏つばき | なつつばき | Japanese stewartia (Stewartia pseudocamellia) | |
| 夏の盛り | なつのさかり | height of summer; hottest part of summer | |
| 夏への扉 | なつへのとびら | The Door into Summer (1957 novel by Robert A. Heinlein) | |
| 夏ツバキ | なつつばき | Japanese stewartia (Stewartia pseudocamellia) | |
| 夏フェス | なつフェス | summer festival (esp. an outdoor musical festival) | |
| 夏季料金 | かきりょうきん | summer rate | |
| 夏山冬里 | なつやまふゆさと | pasturing cattle in summer and feeding them indoors during winter; rotated grazing | |
| 夏期大学 | かきだいがく | university summer school; college summer school | |
| 夏期学校 | かきがっこう | summer school | |
| 夏海老根 | なつえびね | Calanthe reflexa (species of orchid) | |
| 夏緑樹林 | かりょくじゅりん | summer green forest | |
| 夏胡頽子 | なつぐみ | goumi (species of oleaster, Elaeagnus multiflora); cherry silverberry | |
| 夏虫疑冰 | かちゅうぎひょう | being narrow-minded due to limited experience; refusing to believe in things outside of one's own limited experience; a summer insect doubts the existence of ice | |
| 夏虫疑氷 | かちゅうぎひょう | being narrow-minded due to limited experience; refusing to believe in things outside of one's own limited experience; a summer insect doubts the existence of ice | |
| 夏越の祓 | なごしのはらえ | summer purification rites (held at shrines on the last day of the 6th lunar month) | |
| 川野夏橙 | かわのなつだいだい | amanatsu (Citrus natsudaidai); Japanese summer orange; less sour variety of the natsumikan | |
| 常夏の国 | とこなつのくに | land of everlasting summer | |
| 春夏の交 | しゅんかのこう | change from spring to summer | |
| 甘夏蜜柑 | あまなつみかん | amanatsu (Citrus natsudaidai); Japanese summer orange; less sour variety of the natsumikan | |
| 華夏時報 | かかじほう | The Huaxia Times | |
| 華夏銀行 | かかぎんこう | Huaxia Bank | |
| 西夏文字 | せいかもじ | Tangut script | |
| 夏の夜の夢 | なつのよのゆめ | A Midsummer Night's Dream (comedy by William Shakespeare) | |
| 夏の大三角 | なつのだいさんかく | Summer Triangle (asterism) | |
| 夏休みの友 | なつやすみのとも | booklet with homework assignments for the summer vacation | |
| 夏越しの祓 | なごしのはらえ | summer purification rites (held at shrines on the last day of the 6th lunar month) | |
| 大坂夏の陣 | おおさかなつのじん | summer campaign of the siege of Osaka (1615) | |
| 甘夏みかん | あまなつみかん | amanatsu (Citrus natsudaidai); Japanese summer orange; less sour variety of the natsumikan | |
| 真夏の暑さ | まなつのあつさ | heat of high summer | |
| 長く暑い夏 | ながくあついなつ | Long, hot summer (of 1967, when race riots occurred in many cities in the US) | |
| 夏山冬里方式 | なつやまふゆさとほうしき | rotated grazing | |
| 温帯夏雨気候 | おんたいかうきこう | temperate climate with a rainy summer | |
| 熱帯夏季少雨気候 | ねったいかきしょううきこう | tropical wet and dry climate; tropical savannah climate | |
| 戴くものは夏も小袖 | いただくものはなつもこそで | taking whatever one can get one's hands on; being greedy; accepting a padded silk sleeve even in summer | |
| 飛んで火に入る夏の虫 | とんでひにいるなつのむし | rushing to one's doom; (like a) moth flying into the flame | |