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Diwrnod Shwmae Su’mae 2026

Diwrnod Shwmae Su’mae takes place annually on 15 October to encourage everyone to start conversations in Welsh, with a range of resources available to help schools, businesses and communities celebrate the day.
7 October 2026

Promotional pack

To help you celebrate the day, a promotional pack is available which includes:

  • information about this year’s theme, “Pwy Sy’n Dweud Shwmae?” / “Who’s Saying Shwmae?”

  • ideas and inspiration for ways to celebrate the day in schools, workplaces, organisations, and communities

  • ideas for creating content and getting involved in this year’s campaign

  • resources you can use to help promote and celebrate Diwrnod Shwmae Su’mae

Download the promotional pack and various resources from the Diwrnod Shwmae Su’mae website.

You can also see which events are happening near you on the Diwrnod Shwmae Su'mae website.

Spread the word

This year, we want to celebrate the people who use Welsh and their stories, showing that Welsh is for everyone. We’re encouraging everyone to be creative and celebrate the day in a way that works for them.

We’d love to see as many people, schools, organisations, and communities as possible getting involved, so please share the resources with your networks and help spread the word.

You can also use the hashtag #shwmae26 when sharing any content on social media.

More information

The Diwrnod Shwmae Su’ mae 2026 campaign is coordinated by Mentrau Iaith Cymru. For more information, please contact: diwrnodshwmae@gmail.com

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