曇り

The word 曇り (kumori) is a foundational Japanese noun that primarily signifies 'cloudy weather' or 'cloudiness.' Derived from the verb kumoru (to become cloudy or dim), it occupies a central place in daily Japanese conversation, particularly because weather is a ubiquitous topic of social bonding and polite small talk (aisatsu) in Japan. When you look up at a sky where the sun is obscured by a layer of white or gray, you are witnessing kumori. In the context of the CEFR A2 level, learners transition from merely identifying the weather to using it in predictive and descriptive ways. Unlike English, where 'cloudy' is primarily an adjective, kumori functions as a noun in Japanese. This linguistic distinction is crucial; you don't say the sky 'is cloudy' using a simple adjective-noun pair in the same way; instead, you often state 'The weather is cloudiness' (Tenki wa kumori desu).

Core Definition

The state of the atmosphere when clouds cover a significant portion of the sky, typically more than 80% in meteorological terms in Japan.

Beyond the sky, kumori extends its reach into the physical world to describe anything that has lost its clarity or transparency. This could be a fogged-up pair of glasses, a misty mirror after a hot shower, or even a dulled surface of a polished metal. In these instances, the word captures the essence of 'dimness' or 'lack of luster.' This versatility makes it a powerful word for learners to master early on. It bridges the gap between environmental observation and physical description. In Japanese culture, cloudy weather isn't always viewed with the same 'gloom' as in some Western cultures; there is a specific aesthetic appreciation for the soft, diffused light of a cloudy day, often referred to in literature as providing a gentle atmosphere suitable for reflection.

Meteorological Nuance

In Japanese weather reporting, 'kumori' specifically refers to a sky coverage of 8/10 to 10/10, whereas 'hare' (sunny) can still include some clouds.

Furthermore, kumori is often paired with other weather terms to create compound forecasts. For example, kumori nochi hare (cloudy, then sunny) or kumori ji-doki ame (cloudy with occasional rain). These phrases are heard daily on television and radio. For an A2 learner, recognizing these patterns is the key to understanding native speed weather reports. The word also appears in various idiomatic contexts related to the human heart or mind. A 'clouded heart' (kokoro no kumori) suggests doubt, sadness, or a lack of clarity in one's intentions. This metaphorical layer shows how deeply the concept of visibility and clarity is embedded in the Japanese language. Whether you are checking if you need an umbrella or describing the state of your windshield, kumori is the indispensable term for everything that isn't quite clear.

Visual Kanji Breakdown

The Kanji 曇 consists of the 'sun' radical (日) on the left/top and 'cloud' (雲) underneath, visually representing the sun being covered by clouds.

Using 曇り (kumori) correctly requires an understanding of its grammatical role as a noun. In basic sentences, it follows the standard Japanese copula structure. To say 'It is cloudy,' you say Kumori desu. However, to describe a 'cloudy day,' you must use the particle no to link the two nouns: kumori no hi. This is a common point of confusion for English speakers who want to use it as a direct adjective. You cannot say kumori hi. The no particle acts as the bridge that turns the noun into a descriptor. When describing the sky specifically, you might use kumori-zora (cloudy sky), which is a compound noun. Notice how the 'sora' (sky) changes to 'zora' due to rendaku (sequential voicing), a common phonetic change in Japanese.

Basic Copula Usage

[Time] + wa + kumori + desu. Example: Ashita wa kumori desu. (Tomorrow is cloudy.)

When you want to describe the process of the weather changing, you transition to the verb form kumoru. For example, 'The sky became cloudy' would be Sora ga kumotta. As an A2 learner, distinguishing between the state (kumori) and the action (kumoru) is vital. If you are looking at a mirror that has fogged up, you would say Kagami ga kumotte iru (The mirror is in the state of being fogged). Here, the te-iru form is used to describe a continuous state resulting from an action. If you are speaking formally, such as in a business presentation or a weather report, you might use the term donten (overcast sky) for a more technical feel, but kumori remains the standard for almost all other situations.

Noun Modifier Pattern

Kumori + no + [Noun]. Example: Kumori no hi wa suzushii desu. (Cloudy days are cool.)

Another important usage is in the context of vision or optical clarity. If someone's eyes are 'clouded' with age or illness, kumori is used. In a more poetic sense, a 'clouded' sword or jewel refers to one that has lost its shine. This highlights the Japanese linguistic tendency to use weather-related words to describe physical properties of objects. For students, practicing the past tense (kumori deshita) and the negative (kumori ja arimasen) is essential. Because kumori is a noun, it follows the same conjugation rules as gakusei (student) or hon (book). This regularity makes it a safe and easy word to practice when learning Japanese sentence structures.

Compound Weather Phrases

Kumori-tokidoki-hare (Cloudy, occasionally sunny). Kumori-ichiji-ame (Cloudy, with rain at times).

You will encounter 曇り (kumori) most frequently in the context of the daily weather forecast, which is a staple of Japanese television and smartphone apps. In Japan, weather forecasts are incredibly detailed and frequent because the climate varies significantly across the archipelago. On the morning news, you will see a weather map with cloud icons, and the announcer will say, 'Kanto chihō wa gogo kara kumori ni naru deshō' (The Kanto region will likely become cloudy from the afternoon). This 'ni naru' (to become) structure is very common in forecasts. In train stations, digital signage often displays the current and upcoming weather using this word. For a traveler or resident, hearing kumori is a signal to perhaps carry a light jacket or expect less heat from the sun.

TV Forecast Lingo

'Kumori-gachi' (tending to be cloudy) is a phrase often used during the rainy season to describe persistent overcast skies.

In social settings, kumori is a perfect 'icebreaker' (pun intended). In Japan, commenting on the weather is a way to acknowledge the presence of the other person without being intrusive. Walking into an office, a colleague might say, 'Kyō wa kumori desu ne' (It's cloudy today, isn't it?). This 'ne' at the end invites agreement and starts a low-stakes conversation. You will also hear it in retail environments. For instance, a salesperson at an eyewear store might talk about kumori-dome (anti-fog) coatings for glasses. This practical application of the word is something you will see written on product packaging in drugstores or optical shops. Understanding kumori in this context helps you navigate daily shopping needs.

Product Context

'Kumori-dome' (曇り止め) is a noun meaning 'anti-fog spray' or 'anti-fog coating' for glasses or mirrors.

In literature and music, kumori is used to set a mood. A cloudy day in a Japanese novel often signifies a period of transition, uncertainty, or hidden emotions. Song lyrics might use kumori-zora to reflect a character's melancholy. While ame (rain) is often dramatic, kumori is subtle. It represents a 'gray area' in life. If you listen to J-Pop, you'll frequently hear kumori contrasted with aozora (blue sky) to symbolize overcoming difficulties. Finally, in traditional arts like sword-making or lacquerware, kumori refers to a specific type of finish or a flaw that needs to be polished out. Thus, from the high-tech weather satellite reports to the ancient craft of the swordsmith, kumori is a word that echoes through every level of Japanese society.

Emotional Resonance

'Kokoro no kumori' (cloudiness of the heart) refers to feelings of doubt or lingering sadness that obscure one's true feelings.

One of the most frequent errors English speakers make with 曇り (kumori) is treating it as an 'i-adjective.' Because many Japanese weather words or descriptions end in 'i' (like samui - cold, or atsui - hot), learners often assume kumori follows the same pattern. They might try to say kumori-kunai for 'not cloudy.' This is incorrect. Kumori is a noun. Therefore, the negative is kumori ja arimasen or kumori dewa nai. If you treat it like an adjective, native speakers will understand you, but it will sound grammatically jarring. Always remember: if it's a weather state like kumori, hare, or ame, it's a noun.

The 'Adjective' Trap

Incorrect: Kyō wa kumori-i desu. Correct: Kyō wa kumori desu. (Kumori is a noun, not an i-adjective.)

Another mistake involves the confusion between the noun kumori and the verb kumoru. While they both relate to clouds, they are used in different sentence structures. For example, if you want to say 'The window is cloudy (fogged up),' you should use the verb in its continuous state: Mado ga kumotte iru. Using the noun kumori here (Mado wa kumori desu) would sound like you are saying 'The window is the weather state of cloudiness,' which is nonsensical. Use the noun for the general weather or a specific instance of fogging, but use the verb to describe the process or the resulting state of an object becoming obscured.

Noun vs. Verb Usage

Use 'kumori' (noun) for the forecast. Use 'kumoru' (verb) for the action of fogging up or a sky turning cloudy.

Lastly, learners often struggle with the 'partial weather' terms. In English, we might say 'partly cloudy.' In Japanese, the sequence matters. Kumori tokidoki hare means it is mostly cloudy with some sun. Hare tokidoki kumori means it is mostly sunny with some clouds. Mistaking the order of these words can lead to a completely different expectation of the day's weather. Also, be careful with the word kumo (cloud). Kumo is the object in the sky; kumori is the weather condition. You can't say 'The weather is cloud' (Tenki wa kumo desu). You must say 'The weather is cloudy' (Tenki wa kumori desu). Keeping these distinctions clear will help you sound much more like a native speaker.

Weather Priority

The first word in a compound weather phrase usually indicates the dominant condition of the day.

While 曇り (kumori) is the most common word for cloudy weather, Japanese has several synonyms and related terms that offer more specific nuances. For example, donten (曇天) is a more formal, often literary or meteorological term for 'overcast sky.' While you might say kumori to a friend, you'll see donten in a newspaper or a weather report to describe a heavy, leaden sky. Another useful variation is usu-gumori (薄曇り), which means 'thinly cloudy' or 'slightly overcast.' This is used when the sun is still visible as a bright spot through a thin layer of clouds. It’s a very common term in Japan, where weather nuances are highly appreciated.

Kumori vs. Donten

Kumori: Everyday, general cloudiness. Donten: Formal, technical, or poetic term for a heavy overcast sky.

Another related word is kiri (霧), meaning 'fog' or 'mist.' While kumori happens high in the sky, kiri is at ground level. However, the resulting lack of visibility is similar. In terms of metaphors, kumori can be replaced by yogore (dirt/stain) or kizu (flaw) when talking about the clarity of a surface. If a mirror isn't clear because it's dirty, you use yogore, but if it's fogged from steam, you use kumori. Understanding these boundaries helps in choosing the right word for the right situation. There is also hanagumori (花曇り), a beautiful seasonal word used specifically during the cherry blossom (sakura) season to describe the hazy, cloudy weather that often occurs when the flowers are in bloom.

Seasonal Variation

Hanagumori: A cloudy sky during cherry blossom season, often seen as a poetic backdrop for the pink flowers.

Finally, consider the word oboro (朧), which refers to a misty or hazy state, specifically used for the moon (oborozuki). While kumori is the standard weather term, oboro is used for that specific, beautiful hazy look of the moon through thin clouds. For an A2 learner, sticking to kumori is perfect for 95% of situations. However, being aware of donten for news and usu-gumori for those bright-but-cloudy days will significantly enrich your vocabulary. By comparing kumori to its antonym kaisei (perfectly clear blue sky), you can see the full spectrum of Japanese weather description. While hare is just 'sunny,' kaisei is the ultimate clarity, making kumori the essential middle ground in the Japanese climate.

Cloudy vs. Clear

Kumori: Cloudy. Kaisei: Perfectly clear sky. Hare: Sunny (may have some clouds).