| Zone 1 |
Wet areas on the windward side of the island. More than 40 inches of rain per year. Higher than 3,000 feet. |
| Zone 2 |
Cool, dry areas in higher elevations (above 1,000 feet). 20 to 40 inches of rain per year. |
| Zone 3 |
Low, drier areas, warm to hot. Less than 20 inches of rain per year. Sea level to 1,000 feet. |
| Zone 4 |
Lower elevations which are wetter due to proximity of mountains. 1,000 to 3,000 feet. |
| Zone 5 |
Salt spray zones in coastal areas on the windward side. |