猛もう暑しょ日び

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Meanings

extremely hot day; day with max temp ≥ 35°C

Official Japanese meteorological term for a day when the maximum temperature reaches 35°C or higher. Often used in weather forecasts and news.

〈場ば所しょ〉で猛もう暑しょ日びが続つづくextremely hot days continue in a place
今こん週しゅうは東とう京きょうで猛もう暑しょ日びが続つづいている。
Extremely hot days (35°C+) have been continuing in Tokyo this week.
猛もう暑しょ日びになるfor a day to become an extremely hot day
明日あしたは今こん年ねん初はじめて猛もう暑しょ日びになるそうだ。
I heard that tomorrow will be the first day this year to reach 35°C or higher.
猛もう暑しょ日びを記き録ろくするfor a location to record an extremely hot day
大おお阪さかは今こん年ねんすでに10日にち以い上じょうの猛もう暑しょ日びを記き録ろくしている。
Osaka has already recorded over ten extremely hot days (35°C+) this year.

夏なつ日びN3
夏日 starts at 25°C, but 猛暑日 is reserved for the most extreme days with a high of 35°C or above.

真ま夏なつ日びN3
猛暑日 refers to a day with a maximum temperature of 35°C or higher, while 真夏日 is one step milder, referring to 30°C or higher.
夏なつ日びN3
猛暑日 requires a maximum temperature of 35°C or higher, whereas 夏日 only requires 25°C or higher, making it a much broader category.
夏か日じつ
猛暑日 is the official meteorological term for a 35°C-plus day, while 夏日 read かじつ is just a general literary word meaning 'a summer day' with no temperature criterion.

日にちN3
Sunday · nth day of the month; date suffix · counter for days; number of days · Japan

Compound of 猛暑 (intense heat) and 日 (day). The term is a modern meteorological classification.