Aantre westerly winds January circulation winds Kolanas high pressure H Westerly winds July circulation (Source: learnmindset africa.com) 1.21 The high-pressure cell change position in January and July because of the movement of the (ITCZ/tropic of cancer). 1.2.2 A (coastal/heat) low is located over the land in January. 1.2.3 The high-pressure cells move more (south/north) in July. 124 The Indian Ocean high-pressure cell carries more moisture to the east coast in (July/January). anuary/July). ​