Climbing Forecast › North Wales — Snowdon › Clogwyn Du'r Arddu (Cloggy)

NORTH WALES — SNOWDON · RHYOLITE

Clogwyn Du'r Arddu (Cloggy) climbing conditions

Poor — wet, too windy or closed

Right now

Temp6°C
Wind49.2 km/h
Gusts65 km/h
Humidity100%
Rain 48h22.8mm
Last rain2h ago

Assessment

33.8mm rain forecast
Windy — 31 km/h, gusts 45 km/h

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Monday 8 June
Poor
Temp3°C
Rain33.8mm
Wind31 km/h
Gusts45 km/h
Humidity76%
33.8mm rain forecastWindy — 31 km/h, gusts 45 km/h
  • Cold mountain conditions — pack warm belay layers
  • Wet rhyolite is slippery; seepage from grass above can linger
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 3° 1.33mm 32 39 99.49%
09:00 3° 0mm 27 36 91.6%
12:00 3° 0mm 28 38 75.2%
15:00 4° 0mm 33 45 77.12%
18:00 4° 0.08mm 39 51 90.49%
21:00 3° 0.18mm 45 58 97.85%
Tue Tuesday 9 June
Poor
Temp4°C
Rain4mm
Wind44 km/h
Gusts64 km/h
Humidity88%
4mm rain forecastWind 44 km/h, gusts 64 km/h — too windyHumidity 88% — potential fog
  • Wet rhyolite is slippery; seepage from grass above can linger
  • Very windy — consider sheltered alternatives
Time °C Rain Wind Gust Hum
06:00 2° 0.2mm 41 53 98.01%
09:00 2° 0.17mm 44 60 93.86%
12:00 3° 0.09mm 46 64 87.25%
15:00 4° 1.37mm 43 61 89.11%
18:00 4° 0.56mm 31 45 88.35%
21:00 3° 0.33mm 26 35 95.71%
Wed Wednesday 10 June
Poor
Temp4°C
Rain3.4mm
Wind28 km/h
Gusts51 km/h
Humidity85%
3.4mm rain forecastWindy — 28 km/h, gusts 51 km/hHumidity 85% — potential fog
  • Wet rhyolite is slippery; seepage from grass above can linger
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 2° 0.42mm 24 37 94.61%
09:00 3° 0.68mm 24 43 88.89%
12:00 4° 0.93mm 26 46 86.92%
15:00 4° 0.4mm 30 51 82.11%
18:00 4° 0.37mm 30 48 88.47%
21:00 4° 0mm 29 42 94.5%
Thu Thursday 11 June
Poor
Temp6°C
Rain11.4mm
Wind42 km/h
Gusts66 km/h
Humidity92%
11.4mm rain forecastWind 42 km/h, gusts 66 km/h — too windyHumidity 92% — potential fog
  • Wet rhyolite is slippery; seepage from grass above can linger
  • Very windy — consider sheltered alternatives
Time °C Rain Wind Gust Hum
06:00 3° 1.01mm 38 54 96.12%
09:00 4° 1.88mm 42 64 94.45%
12:00 5° 2.7mm 42 65 93.11%
15:00 6° 2.56mm 42 66 91.5%
18:00 7° 1.94mm 41 61 93.24%
21:00 7° 1.03mm 42 60 96.36%
Fri Friday 12 June
Poor
Temp7°C
Rain3.3mm
Wind41 km/h
Gusts66 km/h
Humidity87%
3.3mm rain forecastWind 41 km/h, gusts 66 km/h — too windyHumidity 87% — potential fog
  • Wet rhyolite is slippery; seepage from grass above can linger
  • Very windy — consider sheltered alternatives
Time °C Rain Wind Gust Hum
06:00 5° 0.49mm 44 63 96.22%
09:00 6° 0.54mm 42 65 93%
12:00 7° 0.5mm 41 64 88.53%
15:00 8° 0.43mm 42 66 86.07%
18:00 8° 0.26mm 43 63 86.75%
21:00 7° 0mm 44 58 94.33%
Sat Saturday 13 June
Poor
Temp9°C
Rain0.7mm
Wind29 km/h
Gusts47 km/h
Humidity78%
0.7mm rain forecastWindy — 29 km/h, gusts 47 km/h
  • Good temperature for mountain rhyolite
  • Wet rhyolite is slippery; seepage from grass above can linger
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 6° 0.25mm 37 51 95.06%
09:00 6° 0mm 32 48 88.28%
12:00 8° 0mm 29 47 79.53%
15:00 10° 0mm 28 46 77.03%
18:00 10° 0mm 29 42 81.82%
21:00 9° 0mm 31 40 94.45%
Sun Sunday 14 June
Good
Temp13°C
Rain0mm
Wind23 km/h
Gusts40 km/h
Humidity70%
Should be dry
  • Good temperature for mountain rhyolite
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 8° 0mm 28 37 88.6%
09:00 10° 0mm 25 39 77.5%
12:00 12° 0mm 23 40 69.26%
15:00 13° 0mm 23 39 70.93%
18:00 13° 0mm 25 37 77.65%
21:00 11° 0mm 28 35 93.24%
"The shrine of British climbing". Huge N-facing rhyolite cliff on the north flank of Snowdon, 300m tall. Long walk-in from Llanberis (~2 hr). Slow to come into condition — needs a long dry spell. Worth the wait. Alpine atmosphere.

About Clogwyn Du'r Arddu (Cloggy)

"The shrine of British climbing". Huge N-facing rhyolite cliff on the north flank of Snowdon, 300m tall. Long walk-in from Llanberis (~2 hr). Slow to come into condition — needs a long dry spell. Worth the wait. Alpine atmosphere.

Region
North Wales — Snowdon
Rock type
rhyolite
Aspect
north-facing
Altitude
700m
Exposure
high
Seepage
high