Japanese Rainy Season Words: Tsuyu, Kasa, Jimejime and Kabi

Japan's rainy season is tsuyu (梅雨), and its everyday vocabulary is about rain, umbrellas and damp: kasa (傘, umbrella), jimejime (じめじめ, damp and sticky) and kabi (カビ, mould). When the forecast says it has started, people say tsuyu ni hairimashita ne, the rainy season has begun.

What you need to know

In much of Japan, the weeks from early June to mid or late July bring grey skies, frequent rain and humidity that makes laundry refuse to dry. The season has its own name, its own forecasts and a surprisingly rich vocabulary, because people talk about it constantly: when it starts and ends, how heavy the rain is, whether to carry an umbrella, how to dry clothes, and how to stop mould spreading in the bathroom. This guide covers the words for the season itself, the many kinds of rain and umbrella, the feeling of damp, and the household tasks that come with it, plus a short dialogue and the mistakes learners commonly make. Timings vary from Okinawa to Tohoku, and Hokkaido is often described as having no clear rainy season, so the dates here are a rough guide.

Tsuyu (梅雨) is the rainy season, roughly June to July on much of Honshu

Tsuyuiri is the start and tsuyuake the end; both are forecast announcements

Jimejime describes the damp, sticky feeling of the season

Heyaboshi, drying laundry indoors, and kabi, mould, are daily topics

The rainy season in four words

These four will get you through any rainy-season conversation. The first is the sentence people say when the season begins; the other three are the umbrella you carry, the feeling in the air and the problem waiting in the bathroom.

Four picture cards: a line announcing the rainy season, an umbrella, the damp sticky feeling, and mould on a bathroom wall.
The season, the umbrella, the damp and the mould: the rainy season in four words.
JapaneseRomajiMeaning
梅雨に入りましたね。Tsuyu ni hairimashita ne.The rainy season has started.
傘kasaumbrella
じめじめjimejimedamp and sticky
カビkabimould

Tsuyu ni hairu, to enter the rainy season, is the everyday verb. The noun form, tsuyuiri, appears in forecasts and headlines, and tsuyuake, the end of the rainy season, is the word everyone waits to hear in July.

Start, end and the words in between

Every year the Japan Meteorological Agency announces that each region appears to have entered the rainy season, and later that it appears to have ended. The wording is cautious, and the dates are sometimes revised in autumn, so people talk about it as news rather than as a calendar date. A rainy season with very little rain has a name of its own, and so do the cool days and the sunny breaks it brings.

JapaneseRomajiMeaning
関東も梅雨入りしたそうです。Kantō mo tsuyuiri shita sō desu.They say Kanto has entered the rainy season too.
梅雨明けはまだかな。Tsuyuake wa mada ka na.I wonder when the rainy season will end. (casual)
今年は空梅雨ですね。Kotoshi wa karatsuyu desu ne.There's hardly been any rain this rainy season.
梅雨の晴れ間に洗濯しよう。Tsuyu no harema ni sentaku shiyō.Let's do the laundry while it's sunny. (casual)
WordReadingMeaning
梅雨入りtsuyuiriThe start of the rainy season
梅雨明けtsuyuakeThe end of the rainy season
梅雨前線baiu zensenThe seasonal rain front on weather maps
空梅雨karatsuyuA rainy season with little rain
梅雨寒tsuyuzamuUnseasonably cool days during the rainy season
梅雨の晴れ間tsuyu no haremaA sunny break in the rainy season

Kinds of rain and kinds of umbrella

Japanese is precise about rain. Kosame is light rain, ōame heavy rain, and doshaburi a downpour. A sudden shower is niwaka ame. During tsuyu the typical pattern is rain that stops and starts, furitari yandari.

Umbrellas have their own vocabulary too. Many people carry a folding umbrella every day in June. Convenience stores sell clear plastic umbrellas, and shops and offices often have an umbrella stand by the door or a machine that slips your wet umbrella into a thin plastic bag.

JapaneseRomajiMeaning
小雨kosamelight rain, drizzle
土砂降りdoshaburipouring rain
雨が降ったりやんだりしています。Ame ga futtari yandari shite imasu.The rain keeps stopping and starting.
折りたたみ傘oritatami gasafolding umbrella
ビニール傘binīru gasaclear plastic umbrella
傘立てはどこですか。Kasatate wa doko desu ka.Where is the umbrella stand?
傘をさしたほうがいいよ。Kasa o sashita hō ga ii yo.You'd better put your umbrella up. (casual)

Jimejime: talking about the damp

Jimejime is the signature feeling of the season: damp air, clothes that never quite feel dry, a faint musty smell in the cupboard. It belongs to the group of Japanese mimetic words, and it takes suru: jimejime suru, or jimejime shite iru. Mushimushi is close, but it adds heat, so it fits July better than early June. Humidity itself is shikke (湿気), and the fix is joshitsu (除湿), dehumidifying.

JapaneseRomajiMeaning
今日はじめじめしますね。Kyō wa jimejime shimasu ne.It's damp and sticky today.
湿気がすごい。Shikke ga sugoi.The humidity is awful. (casual)
むしむしして寝苦しい。Mushimushi shite negurushii.It's so muggy I can't sleep well. (casual)
エアコンの除湿をつけましょうか。Eakon no joshitsu o tsukemashō ka.Shall I turn on the air conditioner's dry mode?
髪が広がって大変です。Kami ga hirogatte taihen desu.My hair goes frizzy, it's a pain.

Shikke is pronounced with a small tsu: shi-k-ke, with a short pause before the k. Say it too quickly and it sounds like shike, which is a different word.

Laundry and mould: the home checklist

Two household tasks take over the rainy season: drying laundry and fighting mould. Clothes are often dried indoors, heyaboshi, with a fan or a dehumidifier, and detergents for indoor drying are sold everywhere in June. Mould grows quickly in bathrooms, on window frames and in cupboards, so people air their rooms whenever the rain stops. If you rent, landlords may ask you to keep the place ventilated, and in some flats mould on walls is a common source of disputes when you move out.

A checklist beside a Japanese apartment in the rain: open the windows, run the dehumidifier, dry laundry indoors and check the bathroom for mould, with Mocchi pointing at the list.
Air the rooms, dehumidify, dry clothes inside and watch for mould: the rainy-season routine at home.
JapaneseRomajiMeaning
洗濯物が全然乾かない。Sentakumono ga zenzen kawakanai.The laundry won't dry at all. (casual)
部屋干しにします。Heyaboshi ni shimasu.I'll dry it indoors.
除湿機joshitsukidehumidifier
窓を開けて換気しよう。Mado o akete kanki shiyō.Let's open the windows and air the room. (casual)
お風呂にカビが生えました。Ofuro ni kabi ga haemashita.Mould has grown in the bathroom.
カビ取りスプレーkabitori supurēmould-removing spray

The bright side: hydrangeas, snails and plums

The rainy season has its own beauty, and Japanese speakers often mention it to balance the complaints. Hydrangeas bloom in blue, purple and pink along streets and in temple gardens, and some places are known for them. Snails and frogs appear in children's pictures and June classroom decorations. In some households, June is also the time for ume shigoto, preparing plums for pickles or plum liqueur, a custom that varies from family to family.

JapaneseRomajiMeaning
紫陽花がきれいに咲いていますね。Ajisai ga kirei ni saite imasu ne.The hydrangeas are blooming beautifully.
かたつむりkatatsumurisnail
カエルが鳴いていますね。Kaeru ga naite imasu ne.The frogs are croaking.
梅酒を作ります。Umeshu o tsukurimasu.I'm making plum liqueur.

Mini dialogue: caught without an umbrella

JapaneseRomajiMeaning
あれ、雨降ってきたね。Are, ame futte kita ne.Coworker: Oh, it's started raining. (casual)
しまった、傘を忘れました。Shimatta, kasa o wasuremashita.You: Oh no, I forgot my umbrella.
折りたたみ傘、もう一本あるから貸すよ。Oritatami gasa, mō ippon aru kara kasu yo.Coworker: I've got a spare folding umbrella, I'll lend it to you.
助かります。明日返しますね。Tasukarimasu. Ashita kaeshimasu ne.You: That's a lifesaver. I'll give it back tomorrow.
いつでもいいよ。梅雨はこれだから困るね。Itsu demo ii yo. Tsuyu wa kore da kara komaru ne.Coworker: Whenever. This is the trouble with the rainy season.

Umbrellas are counted with -hon, the counter for long objects: ippon, nihon, sanbon. Tasukarimasu, literally I am saved, is the natural thanks when someone gets you out of a small problem.

Common learner mistakes in the rainy season

  • Saying uki (雨季) for Japan's rainy season. Uki exists, but for Japan people say tsuyu.
  • Saying kasa o motsu for holding an umbrella open. Motsu is to carry; to have it up over your head is kasa o sasu.
  • Saying ame ga kimashita for it started raining. Use ame ga futte kimashita or ame ga furidashimashita.
  • Using jimejime for a pleasantly fresh rainy day. It is always negative; a soft spring rain is not jimejime.
  • Taking a clear umbrella from a stand because they all look alike. People do notice, so mark yours with a sticker or a ribbon.

A rainy-day routine for these words

On wet mornings, type the weather to Mocchi in Japanese, for example ame ga futtari yandari shite imasu, and ask: is this natural, and how else could I say it? Mocchi corrects the line, offers two alternatives in different registers, and keeps notes on the rain words you have practised. A /kanji 雨 request is a good extra step, because the same kanji appears in many of the words here.

On the weekend, put your rainy-season flashcards into Kotoba Stack on the games page and play a few rounds. The game uses your own cards, so the words are exactly the ones you needed this month.

Key points

A practical way to improve

The rainy season is perfect for short, repeated practice because the weather gives you a new sentence every day. Each morning, look outside and say one line about the rain (kyō wa doshaburi da, or ame ga yanda) and one about your plans (kasa o motte iku). In the evening, say one sentence about your home (sentakumono ga kawakanai, or kabi ga haeta). After two weeks you will have a natural set of weather and household sentences. Mocchi can turn your lines into a /quiz, correct the particles in sentences like kasa o sasu, and keep track of which rain words you still confuse.

FAQ

Frequently asked questions

When is the rainy season in Japan?

On much of Honshu, Shikoku and Kyushu, tsuyu usually runs from around early June to mid or late July. Okinawa's rainy season starts and ends earlier, often in May and June. Hokkaido is usually described as having no distinct rainy season. Each year the Japan Meteorological Agency announces the likely start and end for each region, and later revises the dates.

How do you read 梅雨?

In everyday speech 梅雨 is read tsuyu. In weather terms it is often read baiu, as in baiu zensen (梅雨前線), the seasonal rain front. The kanji mean plum and rain; one common explanation is that the season comes when plums ripen.

What does jimejime mean?

Jimejime (じめじめ) describes unpleasant dampness: humid air, sticky skin, a room that smells musty. It is a mimetic word, so you can say jimejime shite iru, it is damp, or kyō wa jimejime suru, it is muggy today. Mushimushi is similar but stresses heat as well as damp.

How do you say to open an umbrella in Japanese?

Opening or holding an umbrella up is kasa o sasu (傘をさす). To open it you can also say kasa o hiraku, and to fold it, kasa o tatamu. A folding umbrella is oritatami gasa, and the clear plastic ones sold at convenience stores are binīru gasa.