2025 Six Nations Women's U20 Summer Series

The 2025 Six Nations Women's U20 Summer Series was the second edition of the Six Nations Women's age-grade rugby union competition.

The competition ran from 5 July to 17 July 2025, all hosted by the Welsh Rugby Union at the Centre for Sporting Excellence in Caerphilly.

Format

Each team plays three matches. A table was used to determine to final results of the competition.

Table ranking rules

Four points are awarded for a win.
Two points are awarded for a draw.
A bonus point is awarded to a team that scores four or more tries, or loses by seven points or fewer.

Fixtures were announced in May 2025.