Fiji is classified as a tropical island that has a wet and dry season. Using
Köeppen's climate classification Am describing a tropical monsoon. Between May and October is the dry season with steady weather in the 80's. The wet season between November and April will bring rain most of the time.
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Rainfall during the wet season on Viti Levu.
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Trade winds that run from the east across the island which draws water from the Pacific Ocean and then takes the water east to west across the island causing the east to get more rain and have more weather than the west.
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West side of Viti Levu which looks a lot like the midwest US.
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The west side gets significantly less rainfall as a result of the mountain range in the center of the island slowing up the movement of the storms carrying rainfall across the island. The precipitation mostly falls before it reaches the mountains leaving nothing to fall along the west side. The extra rain allows for much larger vegetation on the east side making it much more tropical.
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East coast of Viti Levu with much larger vegetation of tress.
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Being in the middle of the ocean near the equator Fiji has seasonal cyclones. The largest problem Fiji faces with cyclones are the resulting storm surges. Water rises flooding and causing the most damage to the city.
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Resulting from a storm surge the city cannot drain the water.
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Sources:
travelblog.org
http://blog.travelpod.com/travel-photo/lewnwdc/11/1315103127/east-side-of-pago-pago-harbor.jpg/tpod.html
http://fijiphotos.net/geo_viti_levu.php
