Right now

Temp11°C

Wind21 km/h

Gusts31 km/h

Humidity92.1%

Rain 48h0.2mm

Last rainNone recent

Assessment

2.1mm rain forecast

Good friction temperature range for rhyolite

High humidity (92.1%) — rhyolite friction compromised, particularly for bouldering

Humidity 92.1% — potential fog/cloud, rock may be damp from condensation

Breezy — good for drying

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Thursday 17 September

Poor

Temp12°C

Rain2mm

Wind26 km/h

Gusts31 km/h

Humidity81%

2.1mm rain forecast

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

09:00 11° 0.2mm 21 — 92.1%

10:00 12° 0.1mm 24 — 87.6%

11:00 12° 0.2mm 27 — 84%

12:00 13° 0.1mm 27 — 78.8%

13:00 13° 0.2mm 27 — 76%

14:00 13° 0.3mm 26 — 77.3%

15:00 13° 0.4mm 25 — 75.8%

16:00 11° 0.4mm 23 — 84.3%

17:00 11° 0.2mm 22 — 88.2%

18:00 11° dry 19 — 91%

19:00 10° dry 17 — 92.4%

20:00 10° dry 19 — 93.3%

21:00 10° dry 18 — 94.1%

Fri Friday 18 September

Poor

Temp12°C

Rain15mm

Wind32 km/h

Gusts—

Humidity93%

15.1mm rain forecastHumidity 93% — 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° dry 18 — 99.2%

07:00 10° dry 20 — 98.7%

08:00 10° dry 21 — 96.9%

09:00 11° 0.1mm 25 — 92.4%

10:00 12° 0.5mm 28 — 85.1%

11:00 12° 0.5mm 30 — 87.7%

12:00 12° 0.9mm 34 — 89.2%

13:00 12° 2mm 35 — 95.1%

14:00 12° 2mm 34 — 97.4%

15:00 12° 4mm 32 — 97.8%

16:00 12° 2mm 32 — 98.3%

17:00 13° 0.5mm 34 — 99%

18:00 13° 0.2mm 33 — 99.6%

19:00 13° 0.2mm 32 — 99.4%

20:00 13° dry 29 — 99.8%

21:00 13° 0.3mm 29 — 99.6%

Sat Saturday 19 September

Poor

Temp14°C

Rain7mm

Wind28 km/h

Gusts—

Humidity93%

6.7mm rain forecastHumidity 93% — 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 14° dry 30 — 99.6%

07:00 14° 0.5mm 31 — 99.6%

08:00 14° 0.6mm 29 — 99.6%

09:00 14° 0.7mm 28 — 96.2%

10:00 14° 0.7mm 30 — 96%

11:00 14° 0.7mm 31 — 94.5%

12:00 15° 0.6mm 31 — 91.9%

13:00 15° 0.3mm 30 — 91.2%

14:00 14° dry 28 — 91.7%

15:00 14° dry 25 — 89.3%

16:00 14° dry 24 — 93.3%

17:00 14° dry 26 — 95.8%

18:00 13° dry 26 — 93.7%

19:00 12° dry 24 — 86.9%

20:00 12° dry 21 — 87.5%

21:00 11° dry 20 — 90.1%

Sun Sunday 20 September

Caution

Temp13°C

Rain0.1mm

Wind16 km/h

Gusts—

Humidity72%

Drying — 23h since rain

Good temperature for mountain rhyolite

Time °C Rain Wind (km/h) Gust Hum

06:00 9° dry 15 — 95.4%

12:00 13° dry 16 — 71.8%

18:00 11° dry 5 — 87%

Mon Monday 21 September

Good

Temp14°C

Rain0.1mm

Wind16 km/h

Gusts—

Humidity73%

Should be dry

Good temperature for mountain rhyolite

Time °C Rain Wind (km/h) Gust Hum

06:00 9° dry 10 — 99.6%

12:00 14° dry 16 — 73.4%

18:00 14° dry 13 — 95.8%

Tue Tuesday 22 September

Caution

Temp16°C

Rain0.1mm

Wind9 km/h

Gusts—

Humidity90%

Should be dryHumidity 90% — potential fog

Good temperature for mountain rhyolite
Damp mountain air — upper pitches may stay greasy

Time °C Rain Wind (km/h) Gust Hum

06:00 14° dry 5 — 99.6%

12:00 16° dry 9 — 90.1%

18:00 14° dry 3 — 96.4%

Wed Wednesday 23 September

Poor

Temp17°C

Rain0.7mm

Wind12 km/h

Gusts—

Humidity84%

0.7mm rain forecast

Wet rhyolite is slippery; seepage from grass above can linger

Time °C Rain Wind (km/h) Gust Hum

06:00 13° dry 4 — 97.4%

12:00 17° 0.6mm 12 — 84.4%

18:00 15° dry 3 — 92.4%

Thu Thursday 24 September

Good

Temp18°C

Raindry

Wind14 km/h

Gusts—

Humidity74%

Should be dry

Time °C Rain Wind (km/h) Gust Hum

06:00 11° dry 7 — 96.1%

12:00 18° dry 14 — 74.2%

18:00 16° dry 14 — 80%

About Craig Ddu (Moel Siabod)

A three-section mountain crag on Moel Siabod comprising the left/south slab crag, the massive central upper wall with the great leaning (unclimbed) prow, and the shorter overhanging Fence Post Wall below. Seasonal seabird nesting restrictions can apply to some sections during spring/summer — check BMC RAD before visiting.

Region: Snowdonia — Moel Siabod
Rock type: Rhyolite
Aspect: south-facing
Altitude: 600m
Exposure: medium
Seepage: medium