Climbing Forecast › North Wales — Anglesey - Gogarth › North Stack

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

North Stack 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 submerged or wave-swept at high tide — climb strictly 2h 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 submerged or wave-swept at high tide — climb strictly 2h either side of low water.
Bird ban (02-01 to 07-31)
Bird ban applies to selected sectors within RSPB reserve; follow local signposts.
North Stack is an atmospheric coastal headland on Holyhead Mountain, featuring sheer cliffs of folded quartzite above the ocean. The rock character is extremely compact, offering steep face climbing, technical arêtes, and quartz hold features. Facing northwest, the cliff stays shaded until late afternoon, keeping temperatures cool while strong coastal winds help dry open surfaces. The route distribution focuses almost entirely on advanced multi-pitch traditional climbing, featuring famous lines such as The Strand and Wrath of Khan. Access requires a twenty-minute coastal walk from Holyhead Mountain parking followed by an abseil approach. Severe sea swells, tidal access restrictions, and loose rock on upper exit ramps demand full sea-cliff competence.

About North Stack

North Stack is an atmospheric coastal headland on Holyhead Mountain, featuring sheer cliffs of folded quartzite above the ocean. The rock character is extremely compact, offering steep face climbing, technical arêtes, and quartz hold features. Facing northwest, the cliff stays shaded until late afternoon, keeping temperatures cool while strong coastal winds help dry open surfaces. The route distribution focuses almost entirely on advanced multi-pitch traditional climbing, featuring famous lines such as The Strand and Wrath of Khan. Access requires a twenty-minute coastal walk from Holyhead Mountain parking followed by an abseil approach. Severe sea swells, tidal access restrictions, and loose rock on upper exit ramps demand full sea-cliff competence.

Region
North Wales — Anglesey - Gogarth
Rock type
quartzite
Aspect
north-west-facing
Altitude
30m
Exposure
high
Seepage
low

Other crags in this region

South Stack & Yellow Wall