2020–21 Ardal SW
The 2020-21 Ardal SW season was to be the first season of the new third-tier northern region football in Welsh football pyramid, part of the Ardal Leagues. Teams were to play each other twice on a home and away basis.
Due to the COVID-19 pandemic in Wales, the Football Association of Wales cancelled the 2020–21 seasons of the Ardal Leagues and below.
Teams
Normally, the league is made up of 16 teams competing for one automatic promotion place to Cymru South, whilst the second place team goes into a play-off with the second place team of Ardal SE. Three teams are relegated to tier 4. STM Sports were confirmed in the Ardal SW league by the FAW. However, on 27 July 2020, they announced that they had folded, leaving only 15 sides in the South West league. Cardiff Draconians were announced as the replacement team to be admitted to the league on 3 August.Team changes
To Ardal SW
Relegated from Cymru SouthFrom Welsh Football League Division One
From Welsh Football League Division Two
From South Wales Alliance League Premier Division
Stadia and locations
| Team | Location | Home Ground | Capacity |
| AFC Llwydcoed | Llwydcoed | Welfare Ground | 1,000 |
| AFC Porth | Porth | Dinas Park | 1,200 |
| Caerau | Cardiff | Cwrt-yr-Ala | 1,000 |
| Cardiff Draconians | Cardiff | Riverside Ground | 1,000 |
| Cwmamman United | Glanamman | Grenig Park | 1,500 |
| Dinas Powys | Dinas Powys | The Murch | 1,500 |
| Garden Village | Kingsbridge | Stafford Common | 2,000 |
| Penrhiwceiber Rangers | Penrhiwceiber | Glasbrook Field | 1,000 |
| Penydarren BGC | Penydarren | The Bont Playing Fields | 1,000 |
| Pontardawe Town | Pontardawe | Parc Ynysderw | 1,000 |
| Pontyclun | Pontyclun | Ivor Park | 1,000 |
| Ton Pentre | Ton Pentre | Ynys Park | 2,000 |
| Treharris Athletic | Trelewis | Parc Taff Bargoed | 1,000 |
| West End | Llandarcy | Llandarcy Academy of Sport | 1,000 |
| Ynyshir Albions | Porth | Dinas Park | 1,200 |
| Ynysygerwn | Llandarcy | Llandarcy Academy of Sport | 1,000 |
Source:
Season overview
On 28 July 2020, the Football Association of Wales announced that this league would be named Ardal SW and would be sponsored by Floodlighting and Electrical Services. Ardal SE & Ardal SW divisions will make up the Ardal Southern region of tier 3 in the men's Welsh domestic game.Since anti-COVID-19 restrictions were put in place by FAW, clubs could have trained in groups of 15 and contact training was allowed at all levels of football. However, competitive and exhibition matches were still not allowed to take place.