Many people ask whether America has a rainforest, and the answer is more nuanced than a simple yes or no. From coastal temperate forests to tropical cloud forests in Puerto Rico, the United States contains several ecosystems that function like rainforests in terms of high rainfall, dense canopy, and rich biodiversity.
Below is a clear overview of where American rainforest-like biomes exist, how they compare to classic tropical rainforests, and what protection they currently have.
| Region | Rainforest Type | Annual Precipitation | Key Biodiversity Highlights |
|---|---|---|---|
| Hawaii (Big Island, Maui) | Tropical Montane Rainforest | Over 400 inches on windward slopes | Hawaiian honeycreepers, silversword plants, unique mosses and ferns |
| Puerto Rico | Tropical Rainforest (El Yunque) | 80–200 inches, very high humidity | Coqui frogs, parrots, diverse tree species and epiphytes |
| Pacific Northwest (Washington, Oregon) | Temperate Rainforest | 80–150 inches | Sitka spruce, western hemlock, marbled murrelet, salmon streams |
| Southeast Appalachian | Cloud Forest and Rainforest-like Cove Forests | 60–90 inches | Diverse salamanders, migratory birds, unique understory plants |
| Florida (Everglades and upland hammocks) | Subtropical Forested Wetlands 40–60 inches orchids, bromeliads, diverse wading bird populations
Rainforest Biomes Across the United States
Hawaii’s Tropical Montane Rainforest
Hawaii hosts spectacular tropical montane rainforests on windward slopes where trade winds dump enormous amounts of moisture. These forests form multilayered canopies, with trees draped in mosses and epiphytes. Streams run cool and clear, supporting many plants and birds found nowhere else on Earth, creating a vivid example of an American rainforest.
Puerto Rico’s El Yunque National Forest
El Yunque is the only tropical rainforest in the U.S. National Forest System and one of the most visited natural sites in the Caribbean. High rainfall, warm temperatures, and complex topography generate extremely lush conditions. The forest is home to endangered Puerto Rican parrots, coqui tree frogs, and a dense web of invertebrates that pollinate and decompose in the constant moisture.
Temperate Rainforest of the Pacific Northwest
Coastal Giants and Misty Valleys
The Pacific Northwest temperate rainforest is dominated by towering conifers like Sitka spruce and western red cedar. Unlike tropical rainforests, these forests experience cool temperatures year-round, yet their biomass and productivity rival many jungles. Persistent coastal fog provides moisture between rainfalls, allowing mosses to carpet trunks and epiphytic ferns to thrive high in the canopy.
Ecological Roles and Conservation
These forests play critical roles in carbon storage, watershed protection, and supporting species such as spotted owls and salmon that depend on clean streams. However, logging pressures and changing fire regimes have reduced old-growth stands, leading to ongoing conservation debates and restoration efforts across Washington, Oregon, and northern California.
Cloud Forests and Subtropical Forests
Appalachian Cove Forests
In the southern Appalachians, cove forests sit in sheltered valleys where high rainfall and rich soils produce exceptionally diverse plant communities. These rainforest-like pockets host showy wildflowers, diverse amphibians, and migratory birds that rely on forest interiors. Climate change and habitat fragmentation threaten the continuity of these important refuges.
Florida’s Subtropical Forested Wetlands
While not classic rainforests, southern Florida supports subtropical forested wetlands filled with orchids, bromeliads, and dense tree canopies. High humidity and seasonal rainfall create conditions where epiphytes flourish and wading birds breed. These systems function similarly to rainforests in terms of moisture cycling and habitat complexity, though they face severe pressures from urban development and sea level rise.
Protecting America’s Rainforest Heritage
- Expand old-growth protection in Pacific Northwest temperate rainforests through science-based logging limits.
- Strengthen invasive species control and habitat corridors for Hawaiian and Puerto Rican rainforests.
- Support climate-resilient forest management in Appalachian cove forests to preserve biodiversity.
- Promote wetland and urban forest conservation in subtropical regions like Florida to maintain rainforest-like functions.
- Invest in community-led conservation and Indigenous stewardship where applicable to ensure long-term sustainability.
FAQ
Reader questions
Does the United States have any tropical rainforests?
Yes, tropical rainforests exist in Puerto Rico (El Yunque) and Hawaii, where high temperatures and rainfall year-round support lush, multilayered ecosystems with unique species.
Where are the temperate rainforests in America?
The primary temperate rainforests occur along the Pacific Coast, from northern California through Oregon and Washington into southeastern Alaska, where frequent rain and cool temperatures create dense, mossy forests.
Are there any rainforests in the continental United States?
Rainforest-like conditions appear in parts of Florida, the Southeast, and the Appalachians, though most are subtropical or cove forests rather than classic tropical rainforests.
Which US rainforest is most endangered?
Hawaiian montane rainforests and Puerto Rico’s El Yunque both face serious threats from invasive species, climate change, and development, making them among the most vulnerable American rainforest ecosystems.