Climbing Forecast › North Wales — Anglesey - Gogarth › South Stack & Yellow Wall

NORTH WALES — ANGLESEY - GOGARTH · QUARTZITE · tidal bird ban

South Stack & Yellow Wall climbing conditions

Caution — drying out or marginal

Right now

Temp18°C
Wind11.9 km/h
Gusts18 km/h
Humidity93.7%
Rain 48h0mm
Last rainNone recent

Assessment

No recent rain
Humidity 90% — potential fog
Tidal access: Base and lower stances submerged at high tide — climb 3h either side of low water.
Humidity 93.7% — potential fog/cloud, rock may be damp from condensation
loose_rock

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Friday 14 August
Caution
Temp18°C
Rain0mm
Wind20 km/h
Gusts18 km/h
Humidity90%
No recent rainHumidity 90% — potential fog
  • Quartzite holds friction well when dry
Time °C Rain Wind Gust Hum
06:00 18° 0mm 12 0 93.7%
07:00 18° 0mm 14 0 93.9%
08:00 18° 0mm 18 0 94.8%
09:00 18° 0mm 20 0 95.7%
10:00 18° 0mm 22 0 95.8%
11:00 18° 0mm 25 0 90.7%
12:00 17° 0mm 24 0 90.3%
13:00 17° 0mm 21 0 89.5%
14:00 18° 0mm 18 0 89.5%
15:00 18° 0mm 16 0 88.5%
16:00 18° 0mm 14 0 86.9%
17:00 18° 0mm 16 0 85.4%
18:00 18° 0mm 16 0 83.4%
19:00 18° 0mm 14 0 83.2%
20:00 17° 0mm 18 0 85.5%
21:00 17° 0mm 23 0 82.1%
Sat Saturday 15 August
Good
Temp16°C
Rain0mm
Wind19 km/h
Gusts—
Humidity78%
No recent rain
  • Quartzite holds friction well when dry
Time °C Rain Wind Gust Hum
06:00 16° 0mm 25 0 85.4%
07:00 16° 0mm 25 0 85.2%
08:00 15° 0mm 24 0 86.2%
09:00 15° 0mm 22 0 86.7%
10:00 15° 0mm 19 0 85%
11:00 15° 0mm 19 0 84.4%
12:00 15° 0mm 20 0 82.3%
13:00 15° 0mm 20 0 78.5%
14:00 16° 0mm 19 0 74.3%
15:00 16° 0mm 18 0 72.7%
16:00 16° 0mm 16 0 72.1%
17:00 16° 0mm 13 0 70.1%
18:00 17° 0mm 12 0 67.5%
19:00 17° 0mm 12 0 64.8%
20:00 16° 0mm 9 0 64.7%
21:00 16° 0mm 10 0 67.2%
Sun Sunday 16 August
Good
Temp16°C
Rain0mm
Wind16 km/h
Gusts—
Humidity83%
No recent rain
  • Quartzite holds friction well when dry
Time °C Rain Wind Gust Hum
06:00 16° 0mm 13 0 83.7%
07:00 16° 0mm 10 0 82.7%
08:00 16° 0mm 10 0 83.1%
09:00 16° 0mm 10 0 83.4%
10:00 16° 0mm 10 0 83.1%
11:00 16° 0mm 11 0 83.6%
12:00 16° 0mm 15 0 85.1%
13:00 16° 0mm 17 0 85.1%
14:00 16° 0mm 20 0 84.7%
15:00 17° 0mm 19 0 81.9%
16:00 17° 0mm 21 0 78.5%
17:00 17° 0mm 23 0 80.3%
18:00 17° 0.03mm 25 0 83.5%
Mon Monday 17 August
Caution
Temp17°C
Rain0mm
Wind11 km/h
Gusts—
Humidity89%
No recent rainHumidity 89% — potential fog
  • Quartzite holds friction well when dry
Time °C Rain Wind Gust Hum
06:00 17° 0mm 19 0 87.9%
12:00 17° 0mm 11 0 88.8%
18:00 18° 0mm 22 0 90.1%
Tue Tuesday 18 August
Poor
Temp18°C
Rain1.1mm
Wind21 km/h
Gusts—
Humidity96%
1.1mm rain forecastHumidity 96% — likely fog/cloud
  • Wet quartzite is slippery but not damaged by climbing
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 18° 1mm 29 0 93.4%
12:00 18° 0.1mm 21 0 95.5%
18:00 18° 0.02mm 10 0 88%
Wed Wednesday 19 August
Caution
Temp16°C
Rain0mm
Wind23 km/h
Gusts—
Humidity87%
Should be dryHumidity 87% — potential fog
  • Quartzite holds friction well when dry
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 15° 0mm 20 0 85.4%
12:00 16° 0mm 23 0 86.6%
18:00 17° 0mm 30 0 80.9%
Thu Thursday 20 August
Poor
Temp16°C
Rain0.5mm
Wind30 km/h
Gusts—
Humidity83%
0.5mm rain forecastWindy — 30 km/h, gusts 0 km/h
  • Quartzite holds friction well when dry
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 15° 0mm 20 0 87.4%
12:00 16° 0.02mm 30 0 82.6%
18:00 17° 0.27mm 34 0 81.3%
Fri Friday 21 August
Poor
Temp16°C
Rain0.7mm
Wind29 km/h
Gusts—
Humidity80%
0.7mm rain forecastWindy — 29 km/h, gusts 0 km/h
  • Wet quartzite is slippery but not damaged by climbing
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 15° 0.18mm 34 0 85.7%
12:00 16° 0.05mm 29 0 80.4%
18:00 17° 0.12mm 21 0 78.4%
Sat Saturday 22 August
Poor
Temp15°C
Rain0.8mm
Wind15 km/h
Gusts—
Humidity85%
0.8mm rain forecastHumidity 85% — potential fog
  • Wet quartzite is slippery but not damaged by climbing
Time °C Rain Wind Gust Hum
06:00 15° 0.08mm 15 0 87.5%
12:00 15° 0mm 15 0 84.7%
18:00 16° 0.02mm 9 0 77.9%
Sun Sunday 23 August
Caution
Temp15°C
Rain0.1mm
Wind25 km/h
Gusts—
Humidity77%
Should be dryWindy — 25 km/h, gusts 0 km/h
  • Quartzite holds friction well when dry
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 15° 0.02mm 28 0 85.8%
12:00 15° 0mm 25 0 77.4%
Tidal access
Base and lower stances submerged at high tide — climb 3h either side of low water.
Bird ban (02-01 to 07-31)
Bird ban enforced on specific sectors within RSPB reserve; check local notices.
South Stack & Yellow Wall form a world-class sea cliff venue on Holy Island, composed of wildly folded quartzite rock. The rock offers magnificent friction, steep wall climbing, and intricate gear placements over crashing ocean waves. Facing west directly onto the Irish Sea, the cliff captures afternoon sun and dries fast in coastal winds, though sea spray can coat lower pitches. The climbing is famous for serious, highly exposed multi-pitch trad routes from HVS to extreme E-grades, dominated by the legendary A Dream of White Horses. The approach involves descending steep concrete steps toward the South Stack lighthouse before abseiling to lower stances. Tidal cutoff, massive swell hazards, and seasonal RSPB bird closures are critical considerations.

About South Stack & Yellow Wall

South Stack & Yellow Wall form a world-class sea cliff venue on Holy Island, composed of wildly folded quartzite rock. The rock offers magnificent friction, steep wall climbing, and intricate gear placements over crashing ocean waves. Facing west directly onto the Irish Sea, the cliff captures afternoon sun and dries fast in coastal winds, though sea spray can coat lower pitches. The climbing is famous for serious, highly exposed multi-pitch trad routes from HVS to extreme E-grades, dominated by the legendary A Dream of White Horses. The approach involves descending steep concrete steps toward the South Stack lighthouse before abseiling to lower stances. Tidal cutoff, massive swell hazards, and seasonal RSPB bird closures are critical considerations.

Region
North Wales — Anglesey - Gogarth
Rock type
quartzite
Aspect
west-facing
Altitude
50m
Exposure
high
Seepage
low

Other crags in this region

North Stack