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

NORTH WALES — SNOWDON · RHYOLITE

Clogwyn Du'r Arddu (Cloggy) climbing conditions

Caution — drying out or marginal

Right now

Temp12°C
Wind17.8 km/h
Gusts21 km/h
Humidity100%
Rain 48h0mm
Last rainNone recent

Assessment

No recent rain
Humidity 92% — potential fog

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Thursday 23 July
Caution
Temp10°C
Rain0mm
Wind20 km/h
Gusts26 km/h
Humidity92%
No recent rainHumidity 92% — potential fog
  • Good temperature for mountain rhyolite
  • Damp mountain air — upper pitches may stay greasy
Time °C Rain Wind Gust Hum
06:00 11° 0mm 22 25 99.72%
09:00 9° 0mm 19 24 98.65%
12:00 10° 0mm 20 26 93.2%
15:00 10° 0mm 19 26 90.03%
18:00 11° 0mm 17 22 89.57%
21:00 10° 0mm 14 22 89.89%
Fri Friday 24 July
Good
Temp11°C
Rain0mm
Wind19 km/h
Gusts28 km/h
Humidity83%
No recent rain
  • Good temperature for mountain rhyolite
Time °C Rain Wind Gust Hum
06:00 10° 0mm 20 23 95.71%
09:00 10° 0mm 15 21 93.01%
12:00 10° 0mm 19 28 86.94%
15:00 11° 0mm 18 28 78.47%
18:00 11° 0mm 22 30 76.09%
21:00 10° 0mm 21 25 88.52%
Sat Saturday 25 July
Poor
Temp11°C
Rain1.6mm
Wind31 km/h
Gusts54 km/h
Humidity84%
1.6mm rain forecastWindy — 31 km/h, gusts 54 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 8° 0mm 22 32 95.38%
09:00 9° 0mm 27 46 81.91%
12:00 10° 0mm 31 54 78.84%
15:00 11° 0.32mm 32 53 88.35%
18:00 10° 0.79mm 28 45 95.21%
21:00 10° 0.51mm 25 37 97.99%
Sun Sunday 26 July
Poor
Temp10°C
Rain4.5mm
Wind26 km/h
Gusts48 km/h
Humidity86%
4.5mm rain forecastWindy — 26 km/h, gusts 48 km/hHumidity 86% — potential fog
  • 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 8° 0.97mm 27 42 97.77%
09:00 8° 0.71mm 25 43 94.46%
12:00 9° 0.83mm 26 48 88.26%
15:00 10° 0.55mm 27 48 83.17%
18:00 10° 0mm 24 41 85.14%
21:00 9° 0mm 24 35 94.42%
Mon Monday 27 July
Caution
Temp10°C
Rain0mm
Wind24 km/h
Gusts45 km/h
Humidity79%
Should be dryHigh seepage — may still be weepingWindy — 24 km/h, gusts 45 km/h
  • Good temperature for mountain rhyolite
  • Breezy — helps drying
Time °C Rain Wind Gust Hum
06:00 7° 0mm 24 37 96.5%
09:00 7° 0mm 22 40 89.52%
12:00 9° 0mm 23 43 78.86%
15:00 10° 0mm 25 45 79.76%
18:00 10° 0mm 25 44 87.62%
21:00 10° 0mm 26 41 96.65%
Tue Tuesday 28 July
Poor
Temp11°C
Rain5.1mm
Wind28 km/h
Gusts52 km/h
Humidity92%
5.1mm rain forecastWindy — 28 km/h, gusts 52 km/hHumidity 92% — potential fog
  • 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 9° 0.81mm 28 45 98%
09:00 10° 1.11mm 28 49 96.8%
12:00 11° 0.99mm 29 52 92.36%
15:00 11° 0.49mm 28 50 91.46%
18:00 11° 0.47mm 28 47 93.98%
21:00 10° 0.55mm 25 41 98.13%
Wed Wednesday 29 July
Poor
Temp11°C
Rain1.4mm
Wind20 km/h
Gusts38 km/h
Humidity87%
1.4mm rain forecastHumidity 87% — potential fog
  • Good temperature for mountain rhyolite
  • Wet rhyolite is slippery; seepage from grass above can linger
Time °C Rain Wind Gust Hum
06:00 8° 0mm 19 31 98.31%
09:00 9° 0.53mm 19 35 93.21%
12:00 10° 0.51mm 20 38 87.7%
15:00 11° 0mm 20 37 85.54%
18:00 11° 0mm 19 34 87.45%
21:00 10° 0mm 17 28 95.82%
"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