The Biggest Rainforests in the World: Top 10 Rankings for 2025

Tropical rainforests play a crucial role in absorbing carbon dioxide from the Earth’s atmosphere and releasing oxygen, making them vital to the planet’s health. These rainforests are characterized by dense tree canopies and high annual rainfall, hence their name.

There are various types of rainforests, including tropical, dry, and temperate rainforests. Tropical rainforests, located near the equator, have a warm and humid climate. Temperate rainforests experience seasonal changes and are distributed between the Northern and Southern Hemispheres. Dry rainforests have less precipitation and more distinct seasons compared to tropical rainforests.

Tropical rainforests are home to a diverse range of plant and animal species, with over half of the world’s species found in rainforests worldwide.

To understand rainforests better and the challenges they face, look at some of the largest forests by land area. Here are the top 10 largest rainforests in the world:

10. Westland Temperate Forest – 11,880km2

Weststand temperate forest in Westland National Park on New Zealand’s South Island. Photo credit: Alamy

Westland Temperate Forest is situated on the west coast of New Zealand’s South Island, receiving significant annual rainfall due to its proximity to the Southern Alps and Tasman Sea.

This forest is home to diverse bird species and endangered animals. While about half of the land is protected, climate change poses threats due to increased wildfire risk.

9. Bosawas Biosphere Reserve – 20,000km2

A landscape of the cloud forest canopy with mountains peeking out from behind the clouds in northern Nicaragua. Photo credit: Getty Images

Bosawas Biosphere Reserve covers a significant portion of Nicaragua’s land area and is the second largest tropical rainforest in the Western Hemisphere.

The reserve boasts rich biodiversity and is home to various plant and animal species. Conservation efforts by indigenous communities contribute to maintaining the rainforest’s health.

8. Sumatra Rainforest Heritage – 25,000km2

Aerial view over the endless jungle of Gunung Leuser National Park, part of Sumatra’s rainforest heritage, in North Sumatra, Indonesia. Photo credit: Getty Images

Sumatra Rainforest Heritage Site comprises three national parks on the Indonesian island of Sumatra, boasting a wide range of biodiversity and unique species.

This forest faces threats from activities like illegal logging, road construction, and encroachment on agricultural land.

7. Pacific Temperate Rainforest – 60,346km2

Temperate rainforest forest near Rainbow Falls in Wells Gray Provincial Park, British Columbia, Canada. Photo credit: Adam Jones/Wiki Commons

Pacific Temperate Rainforest, stretching along the Pacific coastline of the United States and Canada, is home to tall trees like coastal sequoias and animals like raccoons and coyotes.

This rainforest faces threats from logging and lacks legal protection, leading to significant forest loss.

6. Temperate forests of eastern Australia – 222,100km2

View from Point Lookout, New England National Park, New South Wales, Australia. Photo credit: Cgoodwin/Wikipedia

The temperate forests of eastern Australia cover a vast area, with humid coastal regions supporting diverse wildlife like koalas and kingfishers.

This region faces threats from deforestation and climate change, impacting its unique ecosystems.

5. Valdivia Temperate Forest – 248,100km2

The dense trees of Valdivia Forest. Photo credit: Kike Calvo/Universal Images Group/Getty Images

Valdivia Temperate Forest in South America is home to unique wildlife like the pudu deer, facing threats from logging activities.

Conservation efforts are essential to protect this forest and its endemic species.

4. Borneo Lowland Rainforest – 428,438km2

Early morning fog hangs over the rainforest of Sabah, Borneo, Malaysia. Photo by Peter Adams/Getty Images

Borneo Lowland Rainforest spans three countries and is home to diverse plant and animal species, facing threats from deforestation for agricultural purposes.

Conservation efforts are crucial to protect this valuable rainforest.

3. New Guinea Rainforest – 786,000km2

A canopy of various tropical rainforest trees on the Indonesian half of the island of New Guinea. Photo courtesy of Mangiwaw/Getty Images.

New Guinea Rainforest boasts rich biodiversity, home to diverse flora and fauna, including unique species like the Queen Alexandra Birdwing butterfly.

This rainforest faces threats from deforestation and habitat destruction, emphasizing the need for conservation efforts.

2. Congo Basin – 1.6 million km2

An aerial view of the Congo Basin, where rivers meander through the rainforest. Photo credit: Guenterguni/Getty Images

The Congo Basin, known as the “lungs of Africa,” spans nine countries and contains vast forest areas critical for carbon storage and biodiversity conservation.

This rainforest faces threats from deforestation and habitat loss, requiring sustainable conservation measures.

1. Amazon Rainforest – 6.7 million km2

Aerial view of the Amazon rainforest and river in northeastern Pará state, Sao Caetano de Odivelas, Brazil. Photo credit: Getty Images

The Amazon Rainforest, the world’s largest forest, is home to a vast array of plant and animal species, playing a crucial role in the Earth’s climate balance.

Deforestation poses a significant threat to the Amazon Rainforest and its biodiversity, emphasizing the importance of conservation efforts to protect this valuable ecosystem.

rainforest Size KM2
Westland temperate forest 11,880
Bosawas Biosphere Reserve 20,000
Sumatra’s rainforest heritage 25,000
pacific temperate forest 60,346
Temperate forests of eastern Australia 222,100
Valdivia temperate forest 248,100
Borneo lowland rainforest 428,438
new guinea rainforest 786,000
congo basin 1.6 million
amazon rainforest 6.7 million

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Source: www.sciencefocus.com

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