World Lake Day 2027
Friday 27 August 2027
Dates can vary from year to year, so check the organiser’s website for the latest details.
World Lake Day on 27 August raises awareness of lakes and the sustainable management of lakes and related ecosystems.
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On this page
Dates and event details
World Lake Day 2026 was on Thursday 27 August 2026. The next World Lake Day is on Friday 27 August 2027.
| Date status | Date calculated from a fixed annual pattern |
|---|---|
| Date-check source | United Nations / relevant organiser |
| Where | International |
What is the day about?
Lakes can be important to ecosystems, water supplies, livelihoods and recreation. A local learning activity can investigate those connections in one named place. Use appropriate environmental sources and distinguish observations about a particular lake from claims about all lakes. A clear, limited question is more useful than an unsupported promise to solve every problem affecting a catchment.
World Lake Day takes place on 27 August 2027. This international observance raises awareness of lakes and the sustainable management of lakes and related ecosystems. It offers schools, organisations and communities a focused occasion for suitable learning and practical activity.
Date and official background
The annual date is 27 August. The 2027 occurrence follows that fixed annual rule. No unannounced 2027 theme or event programme is assumed. See the official source for background and resources.
The General Assembly adopted resolution A/RES/79/142 on 12 December 2024. UNEP confirms that the first World Lake Day was observed on 27 August 2025. The annual calendar date supports the 2027 observance. The day connects with wider work on protecting and restoring water-related ecosystems, rather than being a festival belonging to one particular lake.
Ideas for schools and community groups
The following are original editorial planning suggestions to adapt to your audience, rather than an official programme.
- Research a named lake. Collect reliable information about its location, catchment and management. Record dates and publishers so that older findings are not mistaken for a current assessment.
- Invite local expertise. Ask a suitable environmental organisation or responsible authority to explain its work. Give the audience a chance to prepare questions and identify which require specialist investigation.
- Explore a map. Use an appropriate map to discuss connections between a lake and surrounding land uses. Explain that a map alone cannot establish water quality or identify a pollution source.
- Plan a suitable learning visit. Agree the purpose, permissions, access and supervision through the setting’s normal arrangements. Offer an alternative format where an outdoor activity is not suitable.
Planning and participation
A classroom project could compare two published descriptions of a lake and ask what evidence each uses. A community group might create a checked guide to official information and reporting routes. Keep the activity separate from sampling or assessment that requires specialist equipment, permission or expertise.
If organising a practical action, consult the relevant landowner or responsible organisation first. Explain what volunteers will and will not do, and use the appropriate local procedures. An awareness day should not be used to encourage people to handle unknown substances, disturb habitats or enter water without suitable arrangements.
Official information
The date and factual background were checked against official organiser or UN-system information on 23 October 2026. Check new announcements before using edition-specific themes or programmes. Practical activities here are editorial suggestions.
