Translation guide
In Japanese, 'hot and humid' is most commonly expressed with the word 蒸し暑い (mushiatsui), which specifically describes the uncomfortable combination of heat and high humidity typical of Japanese summers. Other expressions exist for different nuances, such as extreme heat and humidity or a more general sense of sultriness.
Describe weather that is both hot and humid, causing discomfort and stickiness.
The most common and natural word for 'hot and humid'. It combines 蒸す (to steam) and 暑い (hot), evoking the feeling of being steamed. Used for typical Japanese summer weather.
It's hot and humid today, isn't it?
On hot and humid nights, I can't fall asleep easily.
Describes an oppressively hot and stuffy feeling, often indoors or in crowded places. It implies discomfort from heat and lack of ventilation, not necessarily high humidity.
This room is hot and stuffy, so let's open the window.
A more literal phrase meaning 'the humidity is high and it's hot'. Useful when you want to emphasize the humidity factor explicitly.
Today it's humid and hot.
A colloquial, onomatopoeic verb phrase describing a muggy, steamy atmosphere. Often used in casual speech.
It's all muggy outside, huh?
Describe intense, often tropical heat with high humidity, sometimes with a sense of being overwhelmed.
Still the go-to word, but can be intensified with adverbs like とても (very) or すごく (extremely).
It's extremely hot and humid today.
A formal or written term for 'intense heat', often used in weather reports. It implies severe heat, which in Japan is usually accompanied by humidity.
Literally 'tropical night', referring to nights when the temperature doesn't drop below 25°C (77°F). It implies hot and humid conditions that make sleeping difficult.
Describe a heavy, still, and sultry atmosphere, often before a storm or in a confined space.
Works for sultry weather as well, especially when the air feels thick and still.
It gets hot and humid before it rains.
Describes a sudden feeling of stuffiness, heat, or oppressive air, often indoors or in a crowd. Can also mean to be offended, but context clarifies.
When I entered the room, it felt hot and stuffy.
蒸し暑い focuses on humidity combined with heat, typical of outdoor summer weather. 暑苦しい focuses on a stuffy, oppressive feeling, often indoors or in crowded places, and doesn't necessarily imply high humidity.
Outside it's hot and humid, but indoors it's hot and stuffy.
The literal translation '暑くて湿気がある' is grammatically correct but sounds unnatural and wordy. Use 蒸し暑い instead.
This summer, intense heat continues.
Last night was a tropical night and it was hard to sleep.
Means 'unpleasantly warm' or 'lukewarm', often implying humidity and a clammy feeling. Used for air, wind, or objects.
A warm, humid wind is blowing.