1… "Venerable sir, what is the cause and reason why it sometimes becomes windy?"

"There are, bhikkhu, what are called wind-cloud devas. sn.iii.257 When it occurs to them, ‘Let us revel in our own kind of delight,’ then, in accordance with their wish, it becomes windy. This, bhikkhu, is the cause and reason why it sometimes becomes windy."

1Sāvatthinidānaṁ. Ekamantaṁ nisinno kho so bhikkhu bhagavantaṁ etadavoca: "ko nu kho, bhante, hetu, ko paccayo, yenekadā vāto hotī"ti?

"Santi, bhikkhu, vātavalāhakā nāma devā. Tesaṁ yadā evaṁ hoti: ‘yannūna mayaṁ sakāya ratiyā vaseyyāmā’ti, tesaṁ taṁ cetopaṇidhimanvāya vāto hoti. Ayaṁ kho, bhikkhu, hetu, ayaṁ paccayo, yenekadā vāto hotī"ti. Chappaññāsamaṁ.