The JD Cymru Leagues season dates for the 2026/27 campaign have been confirmed.
- Opening weekend: 31 July – 2 August 2026
- Winter break: 8-21 January 2027
- Final round of Phase One fixtures: 26 March 2027
- Beginning of Phase Two: 2 April 2027
- Final round of Phase Two fixtures: 23 – 25 April 2027
- European Play-Off Quarter-Final(s): 27 April 2027
- European Play-Off Semi-Final(s): 30 April 2027
- European Play-Off Final: 7-8 May 2027
- Promotion/Relegation Play-Off Final: 7-9 May 2027
JD Cymru North & JD Cymru South
- Opening weekend: 31 July – 2 August 2026
- Final round of fixtures: 16-17 April 2027
- Promotion Play-Off Leg 1: 23-25 April 2027
- Promotion Play-Off Leg 2: 30 April – 2 May 2027
- Promotion/Relegation Play-Off Final: 7-9 May 2027
Fixture release days for the JD Cymru Leagues will be confirmed in due course. The transfer window will open on 15 June 2026 and close on 1 September 2026.
