UPPER HELEMANO RESERVOIR, HAWAII

Tropical savanna climates have monthly mean temperature above 18°C (64°F) in every month of the year and typically a pronounced dry season, with the driest month having precipitation less than 60mm (2.36 in) of precipitation. In essence, a tropical savanna climate tends to either see less rainfall than a tropical monsoon climate or have more pronounced dry seasons than a tropical monsoon climate. Tropical savanna climates are most commonly found in Africa, Asia and South America. The climate is also prevalent in sections of Central America, northern Australia and North America, specifically in sections of Mexico and the state of Florida in the United States.

The Köppen Climate Classification subtype for this climate is "As". (Tropical Savanna Climate).

The average amount of precipitation for the year in Upper Helemano Reservoir is 54.1" (1374.1 mm). The month with the most precipitation on average is March with 8.3" (210.8 mm) of precipitation. The month with the least precipitation on average is September with an average of 1.6" (40.6 mm). There are an average of 209.0 days of precipitation, with the most precipitation occurring in June with 19.0 days and the least precipitation occurring in September with 15.0 days.