hot sand
Refers to sand that is hot, typically from the sun, as on a beach or in a desert.
On a midsummer beach, the hot sand almost burns your feet.
Variant kanji spelling using 沙 instead of 砂; less common but still used.
Compound of 熱 (netsu, 'heat') + 砂 (sa, 'sand'), with the reading ねっさ resulting from the assimilation of つ to っ before さ.