A southerly has held for 10 hours, running warmer than the water (18°C air against 17°C water). Expect fish at the northern end — the bank it is blowing into — where the drift piles food, colour and warmth together. This reads the upper water, though — a bottom bait at range feels it far less than a floater or a fish in the margins. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.
Start with Daddy Long Legs (10-12) on a As per local method. Evening can produce explosive surface takes — try a foam beetle or booby on a long leader. Rainbows respond to more active retrieves — try short strips between pauses.
If the main plan stalls, drop to a size 14–16 midge — switch to a washing-line or suspender rig and change drift line before you change food group.
Watch for Sedge towards evening — this could be the best window of the day.
In wind, bank fish the lee shore — boats can anchor in productive areas if conditions allow.
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Hatch predictions
Top prey shown — see all 5 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
A reasonable day here, though wind isn't quite in the sweet spot.
NRW WFD Cycle 3 (lake) — Llandegfedd Reservoir: Moderate ecological status. Re-tagged 2026-06-18 from a river reach to the reservoir's own lake waterbody (was recorded Good). Source: NRW DataMapWales WFD Cycle 3 classification layer.
NRW (Wales) · GB30941363
A southerly has held for 10 hours, running warmer than the water (18°C air against 17°C water). Expect fish at the northern end — the bank it is blowing into — where the drift piles food, colour and warmth together. This reads the upper water, though — a bottom bait at range feels it far less than a floater or a fish in the margins. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.
Start with Daddy Long Legs (10-12) on a As per local method. Evening can produce explosive surface takes — try a foam beetle or booby on a long leader. Rainbows respond to more active retrieves — try short strips between pauses.
If the main plan stalls, drop to a size 14–16 midge — switch to a washing-line or suspender rig and change drift line before you change food group.
Watch for Sedge towards evening — this could be the best window of the day.
In wind, bank fish the lee shore — boats can anchor in productive areas if conditions allow.
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Hatch predictions
Top prey shown — see all 5 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
A reasonable day here, though wind isn't quite in the sweet spot.
NRW WFD Cycle 3 (lake) — Llandegfedd Reservoir: Moderate ecological status. Re-tagged 2026-06-18 from a river reach to the reservoir's own lake waterbody (was recorded Good). Source: NRW DataMapWales WFD Cycle 3 classification layer.
NRW (Wales) · GB30941363
