Right now

Temp13°C

Wind11 km/h

Gusts17 km/h

Humidity67.58%

Rain 48hdry

Last rainNone recent

Assessment

No recent rain

Good friction temperature range for rhyolite

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Monday 28 September

Good

Temp12°C

Raindry

Wind11 km/h

Gusts13 km/h

Humidity61%

No recent rain

Good temperature for mountain rhyolite

Time °C Rain Wind (km/h) Gust Hum

15:00 12° dry 11 13 61.35%

18:00 13° dry 11 17 67.58%

21:00 11° dry 35 49 69.68%

Tue Tuesday 29 September

Poor

Temp13°C

Raindry

Wind59 km/h

Gusts83 km/h

Humidity90%

No recent rainWind 59 km/h, gusts 83 km/h — too windyHumidity 90% — potential fog

Good temperature for mountain rhyolite
Damp mountain air — upper pitches may stay greasy
Very windy — consider sheltered alternatives

Time °C Rain Wind (km/h) Gust Hum

06:00 9° dry 51 73 94.7%

09:00 10° dry 60 83 97.3%

12:00 12° dry 60 83 93.26%

15:00 14° dry 57 79 85.97%

18:00 16° dry 58 80 81.29%

21:00 16° dry 62 85 82.58%

Wed Wednesday 30 September

Poor

Temp12°C

Rain21mm

Wind41 km/h

Gusts67 km/h

Humidity81%

21.4mm rain forecastWind 41 km/h, gusts 67 km/h — too windy

Good temperature for mountain rhyolite
Wet rhyolite is slippery; seepage from grass above can linger
Very windy — consider sheltered alternatives

Time °C Rain Wind (km/h) Gust Hum

06:00 11° 6mm 38 53 95.67%

09:00 11° 0.8mm 41 59 93.75%

12:00 12° 1mm 44 67 80.12%

15:00 12° dry 39 60 81.27%

18:00 11° 1mm 36 55 90.99%

21:00 10° 0.7mm 28 43 95.82%

Thu Thursday 1 October

Poor

Temp10°C

Rain4mm

Wind26 km/h

Gusts46 km/h

Humidity77%

3.7mm rain forecastWindy — 26 km/h, gusts 46 km/h

Good temperature for mountain rhyolite
Wet rhyolite is slippery; seepage from grass above can linger
Breezy — helps drying

Time °C Rain Wind (km/h) Gust Hum

06:00 8° 0.8mm 21 31 94.62%

09:00 8° 0.3mm 22 37 89.87%

12:00 10° 0.5mm 25 45 77.89%

15:00 10° 0.2mm 27 46 76.23%

18:00 10° dry 27 42 87.5%

21:00 9° dry 30 45 92.22%

Fri Friday 2 October

Poor

Temp11°C

Rain7mm

Wind27 km/h

Gusts47 km/h

Humidity86%

6.6mm rain forecastWindy — 27 km/h, gusts 47 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 (km/h) Gust Hum

06:00 9° 2mm 33 51 95.97%

09:00 10° 2mm 28 46 94.72%

12:00 11° 0.5mm 27 47 86.79%

15:00 11° 0.7mm 27 47 85.65%

18:00 11° 0.5mm 24 37 94.53%

21:00 9° dry 23 33 96.92%

Sat Saturday 3 October

Poor

Temp11°C

Rain0.4mm

Wind18 km/h

Gusts32 km/h

Humidity82%

0.4mm rain forecast

Good temperature for mountain rhyolite

Time °C Rain Wind (km/h) Gust Hum

06:00 8° 0.4mm 18 26 97.8%

09:00 9° dry 19 30 91.94%

12:00 11° dry 18 32 82.49%

15:00 11° dry 19 32 81.38%

18:00 10° dry 19 26 93.73%

21:00 9° dry 18 25 96.44%

Sun Sunday 4 October

Caution

Temp11°C

Raindry

Wind13 km/h

Gusts25 km/h

Humidity79%

Should be dryHigh seepage — may still be weeping

Good temperature for mountain rhyolite

Time °C Rain Wind (km/h) Gust Hum

06:00 7° dry 14 21 97.95%

09:00 8° dry 14 22 90.86%

12:00 10° dry 13 25 79.71%

15:00 11° dry 12 23 78.71%

18:00 10° dry 12 18 92.82%

21:00 8° dry 13 18 97.08%

Mon Monday 5 October

Good

Temp11°C

Raindry

Wind13 km/h

Gusts26 km/h

Humidity78%

Should be dry

Good temperature for mountain rhyolite

Time °C Rain Wind (km/h) Gust Hum

06:00 6° dry 14 20 98.37%

09:00 8° dry 14 22 91.19%

12:00 11° dry 14 26 79.19%

15:00 12° dry 13 24 77.02%

About Craig y Bera

Craig y Bera is a remote, imposing cliff hidden on the flanks of Mynydd Mawr, composed of steep rhyolite volcanic rock. The rock character features wild, fluted columns, fragile edges, and exposed wall faces that demand careful gear placement and bold climbing. Facing west, the cliff captures late afternoon sun, but its high, windswept mountain position means dampness lingers in main wall cracks after rain. Grade coverage focuses heavily on adventurous HVS and E-grade trad testpieces, with Angel Pavement standing as one of Snowdonia's greatest mountain excursions. The approach involves a forty-five minute hike up through forest trails and open moorland from Rhyd Ddu. Loose rock fragments on unclimbed territory and sparse gear on subtle walls require extreme caution.

Region: Snowdonia — Nantlle
Rock type: Rhyolite
Aspect: west-facing
Altitude: 480m
Exposure: high
Seepage: high

Other crags in this region

Cwm Silyn