The weather pattern of the Indonesian Archipelago is more seasonal than that of the adjacent areas, which are dominated by the two monsoons. The SE monsoon generally lasts from April to September and is replaced by a NW monsoon from October till March. Though neither of them is very strong, the SE monsoon is the more consistent both in strength and in direction, particularly during July and August when it becomes continuous with the SE trade winds of the South Pacific and Indian Oceans. During the NW monsoon, the direction of the winds is predominantly NW, although their strength and consistency diminish further south.
South of latitude 4°S the weather is often squally alternating with calms, variable winds and rain.
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