暑 means hot (weather) and is a JLPT N1 kanji. It has 12 strokes and uses the sun / day radical (日).
Stroke order · 12 strokes
On'yomi (音読み)
ショ
Kun'yomi (訓読み)
あつ(い)
Radical
日 · sun / day
Strokes
12
How to remember 暑
The sun (日) cooking (者) overhead — scorching heat. 暑い! — the national topic of conversation in Japanese July and August; 残暑 means the lingering heat that carries into autumn.