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Environmental Days In May 2025

Planet Earth

Image Credit: NASA

This May there are awareness days for Tuna, Otters, Leopards and Koalas as well as thinking about and celebrating biodiversity, parklands, migratory birds and parrots.

The key environmental dates, awareness days, weeks, months and environmental events in May 2025.

World Tuna Day

Date: 2nd May

World Tuna Day is a UN designated day to recognise the importance of Tuna's role in nutrition and food security.

It also promotes sustainability in tuna fishing and to prevent overfishing which leads to reductions in tuna stocks.

Website

International Leopard Day

Date: 3rd May

International Leopard Day celebrates the leopard, the big cat know for it's spots, which are actually called rosettes. Found widely across Africa and Asia and to a lesser extent the Arabian Peninsula.

Leopards mainly are threatened by illegal game hunting and loss of habitat due to land being turned over to agriculture

Wild Koala Day

Date: 3rd May

Wild Koala Day is a day to celebrate wild koalas and protect their habitats. The day was created by koala conservationist to prevent the destruction of koalas natural habitat.

Website

Greenery Day

Date: 4th May

A national holiday in Japan to encourage to commune with nature and to be thankful for its blessings.

International Compost Awareness Week

Date: 4th - 10th May 2025

International Compost Awareness Week is celebrated around the world each year during the first full week of May.

It is celebrated nationwide across the UK and in many other countries  to raise public awareness on why we all should be composting our organics and using compost to create healthier soil.

Website

World Donkey Day

Date: 8th May

World Donkey Day celebrates this animal which is used as a working animal around the world. Sadly it is also vulnerable due to the illegal trade in donkey skin, which not only devastating donkey numbers, but impacting the livelihoods of thousands of people around the world.

World Migratory Bird Day

Date: 11th May 2025

World Migratory Bird Day is held on the second Saturday of May and October each year. Part of the United Nations Environment Programme it focuses on a theme each year.

The theme for 2025 is still to be announced.

Website

Water Saving Week

Date: 12th - 16th May 2025

Water Saving Week is organised by Waterwise and is held during the 3rd week in May each year.

Learn how to reduce our water usage and why it’s important to do so. From saving money to saving nature, we can all make tiny changes in our lives that combined will have a huge impact on our future.

Website

Endangered Species Day

Date: 19th May

Endangered Species Day is held on the 3rd Friday in May each year. It is marked by celebrating, learning about, and taking action to protect threatened and endangered species.

Website

World Bee Day

Date: 20th May

Bees are vitally important to every living thing on planet Earth. But bees and other pollinators, such as butterflies, bats and hummingbirds, are increasingly under threat from human activities.

World Bee Day is a UN designated day which recognises the importance of these little creatures

Website

International Day for Biological Diversity

International Day for Biological Diversity Logo

Date: 22nd May

International Day for Biological Diversity raises awareness of the importance of biological diversity, as out whole world is dependent on this.

A UN designated day, it encourages public education and awareness about this issue.

Website

World Turtle Day

Date: 23rd May

World Turtle Day was founded by American Tortoise Rescue as a yearly observance to help people celebrate and protect turtles and tortoises and their disappearing habitats around the world.

Website

European Day of Parks

Date: 24th May

European Day of Parks was launched in 1999 by EUROPARC Federation to celebrate protected areas across Europe and keep this natural and cultural heritage for future generations.

Website

World Otter Day

Date: 31st May

World Otter Day is celebrated on the last Wednesday of May each year. It brings all otter species to the attention of many people and focuses on raising awareness about how important otters are and also highlights the threats that they face.

Otters are at risk from pollution, loss of habitat, hunting and trade for fur and pets.

Website

World Parrot Day

Date: 31st May

World Parrot Day celebrates these beautiful birds each year. Started by the World Parrot Trust it was founded to raise awareness of threats to their survival like trapping for the wildlife trade and habitat loss.

Website

More key environmental dates

Environment days and events in June >>

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