More than 90%% of the average annual rainfall (1050 mm) occurs in rainy season (Singh 2012).
Average annual rainfall is 800 mm with rainy season between April-May and October-November.
Saipan's average annual precipitation is 82.36 inches, with 67 percent falling during the rainy season.
The average annual rainfall is about 730 mm, which falls primarily during two rainy seasons.
However, we verified a general reduction of rainy days per year with respect to the average annual precipitations indicating a drying trend.
The rainy season is from May to October, with an average annual rainfall of about 1400 mm.
It has an average annual temperature of 25°C and precipitation of 132.9 mm in the rainy season (May October).
The average temperature for the region is 28°C and there are two annual rainy seasons, the heavy Masika rains from March to June and the light Vuli rains from October to December.
The region receives a bimodal rain fall, the average annual precipitation rate being 1000 that comes from the long and short rainy seasons.
The Guinean-bioclimatic zone is located in the south, near the Atlantic coast with two rainy seasons (April–July and September–November) and an average annual rainfall of >1500 mm with degraded tropical forest.
