The higher the surface temperature of a large body of water nearby, there will be more precipitation on that place especially if the landmass near it have high mountains to force moist air to rise and mix(encounter) with the cooler air then precipitation follows. This is because when the ocean surface is warm, evaporation is … Read more

It is the North Pacific Equatorial Current which is a warm water current that runs from the area near Hawaii towards the Philippines' eastern coast bringing high moisture air for the Northeast Monsoon (The Southeast Monsoon doesn' pass by this current before coming to the Philippines).