Escape to the Brecon Beacons: What to See & Do in Late Summer 2025
If you’re staying at Nant Ddu Lodge & Spa, you’ve chosen one of the best spots in the Brecon Beacons (or Bannau Brycheiniog, as it’s officially now known). Set in the southern edge of the National Park, this cosy, welcoming hotel gives you the best of both worlds: total relaxation and easy access to the wild beauty of the Beacons.
August and September are ideal months to visit—warm(ish!) days, fewer crowds, and golden evening light across the hills. Whether you’re here for long hikes, gentle strolls, local events, or just some peace and quiet, there’s loads to explore.
Big Walks & Iconic Views
First up: Pen y Fan. If you’ve got your hiking boots ready, this is the one to tick off. It’s the highest peak in South Wales, and the views from the top are absolutely worth the climb. The Horseshoe Ridge route is a favourite for a reason—you’ll pass Corn Du, Cribyn and Fan y Big on your way round.
Looking for something a little less famous but equally stunning? Try the Llyn y Fan Fach route in the west. It’s a dramatic lake nestled beneath craggy ridges, with local legends of water maidens and magical cattle. Spooky in the best way.
And if waterfalls are more your thing, you’ll love Waterfall Country near Ystradfellte. You can even walk behind the curtain of water at Sgwd yr Eira—just don’t forget your waterproofs! Be sure to visit the Bannau Brycheiniog site for all the details and plan your routes.
Castles, Railways & Starry Skies
If you fancy mixing a bit of history into your trip, head over to Carreg Cennen Castle—a crumbling ruin on a clifftop with seriously cinematic views (and even a cave below). Or hop on the Brecon Mountain Railway, a vintage steam train that chugs through some of the park’s most peaceful scenery.
And for something truly special: the Dark Sky Festival is happening on 20 September 2025. The Brecon Beacons are an International Dark Sky Reserve, so bring a blanket, look up, and watch the stars come alive.
What’s On This August & September
It’s not just “the great outdoors”. There’s more going on than you might think in this seemingly-sleepy corner of Wales!
- Brecon Jazz Festival (early August): Great music, local food, and a chilled-out atmosphere in town.
- Talgarth Festival of the Black Mountains (August Bank Holiday): A lovely mix of crafts, music and food stalls. Don’t miss the duck race!
- And at the tail end of September, the Abergavenny Food Festival in is a foodie’s dream.
After the Adventure
The best part? After a day exploring, you can come back to Nant Ddu Lodge & Spa for a massage, a soak in the spa, a lunch or dinner in the Lodge, or a cosy pint. The food’s excellent, (award winning, in fact!), the welcome is warm, and the beds are just what you need after a day in the hills.
Whether you’re here for a weekend or a longer break, the Brecon Beacons in late summer are peaceful, dramatic, and full of hidden surprises. From wild walks to local festivals, this is a place that stays with you long after you’ve left
