Seasonal wind of the Indian Ocean (7)
I believe the answer is:
monsoon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">seasonal wind of the indian ocean</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for monsoon that I've seen before include "Rainy season in southern Asia" , "Wet seasonal wind" , "Seasonal wind (south-west or north-east) of southern Asia" , "Seasonal Asian wind" , "Rainy period" .)