Right now

Temp13°C

Wind32 km/h

Gusts51 km/h

Humidity88.03%

Rain 48h2mm

Last rain0h ago

Assessment

2.8mm rain forecast

Wind 34 km/h, gusts 64 km/h — too windy

Good friction temperature range for rhyolite

High humidity (88.03%) — rhyolite friction compromised, particularly for bouldering

Humidity 88.03% — potential fog/cloud, rock may be damp from condensation

Windy — 32 km/h, gusts 51 km/h. Take care on exposed routes

Drying Time

9% dry · 4-7h to dry

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Sunday 6 September

Poor

Temp18°C

Rain3mm

Wind34 km/h

Gusts64 km/h

Humidity68%

2.8mm rain forecastWind 34 km/h, gusts 64 km/h — too windy

Wet rhyolite is slippery; seepage from grass above can linger
Breezy — helps drying

Time °C Rain Wind (km/h) Gust Hum

06:00 13° 2mm 32 51 88.03%

09:00 14° 0.7mm 26 50 75.85%

12:00 17° dry 35 64 68.23%

15:00 19° dry 33 62 68.73%

18:00 18° dry 25 51 85.49%

21:00 16° 0.2mm 22 44 99.17%

Mon Monday 7 September

Poor

Temp14°C

Rain7mm

Wind27 km/h

Gusts53 km/h

Humidity74%

7.3mm rain forecastWindy — 27 km/h, gusts 53 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 12° 0.1mm 11 26 93.08%

09:00 12° dry 18 33 87.75%

12:00 14° dry 25 44 73.08%

15:00 14° dry 29 53 74.5%

18:00 14° 1mm 25 50 89.05%

21:00 12° 3mm 20 42 92.53%

Tue Tuesday 8 September

Poor

Temp12°C

Rain12mm

Wind26 km/h

Gusts53 km/h

Humidity75%

11.9mm rain forecastWindy — 26 km/h, gusts 53 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 9° dry 18 38 92.2%

09:00 10° 0.5mm 24 47 87.87%

12:00 11° 0.5mm 27 53 75.02%

15:00 12° 0.5mm 26 50 74.26%

18:00 12° 0.6mm 20 40 83.97%

21:00 11° 0.5mm 19 37 90.07%

Wed Wednesday 9 September

Poor

Temp12°C

Rain1mm

Wind18 km/h

Gusts36 km/h

Humidity75%

1mm rain forecast

Good temperature for mountain rhyolite
Wet rhyolite is slippery; seepage from grass above can linger

Time °C Rain Wind (km/h) Gust Hum

06:00 9° 0.3mm 15 29 95.27%

09:00 10° 0.3mm 18 35 88.77%

12:00 11° dry 18 36 76.61%

15:00 12° dry 17 34 72.51%

18:00 12° dry 11 22 81.26%

21:00 10° dry 8 16 90.31%

Thu Thursday 10 September

Poor

Temp14°C

Rain8mm

Wind23 km/h

Gusts46 km/h

Humidity91%

7.6mm rain forecastWindy — 23 km/h, gusts 46 km/hHumidity 91% — 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 10° 0.8mm 15 28 96.39%

09:00 11° 1mm 21 40 93.06%

12:00 13° 1mm 24 46 90.48%

15:00 14° 2mm 21 41 91.22%

18:00 14° 1mm 18 34 95.01%

21:00 14° 1mm 17 32 96.66%

Fri Friday 11 September

Poor

Temp14°C

Rain5mm

Wind18 km/h

Gusts37 km/h

Humidity84%

5.4mm rain forecast

Good temperature for mountain rhyolite
Wet rhyolite is slippery; seepage from grass above can linger

Time °C Rain Wind (km/h) Gust Hum

06:00 12° 1mm 15 29 96.95%

09:00 12° 0.9mm 18 34 94%

12:00 13° 0.8mm 19 37 84.9%

15:00 14° dry 17 34 82.87%

18:00 13° dry 12 24 86.91%

21:00 12° dry 10 18 93.64%

Sat Saturday 12 September

Poor

Temp13°C

Rain6mm

Wind18 km/h

Gusts36 km/h

Humidity85%

6.1mm rain forecastHumidity 85% — potential fog

Good temperature for mountain rhyolite
Wet rhyolite is slippery; seepage from grass above can linger

Time °C Rain Wind (km/h) Gust Hum

06:00 10° dry 11 21 96.17%

09:00 11° 1mm 15 29 90.85%

12:00 13° 0.9mm 18 36 84.97%

15:00 14° 1mm 18 36 85.41%

18:00 13° 0.8mm 15 29 90.03%

21:00 12° 1.0mm 11 22 95.26%

Sun Sunday 13 September

Poor

Temp11°C

Rain0.6mm

Wind10 km/h

Gusts—

Humidity—

0.6mm rain forecast

Good temperature for mountain rhyolite
Wet rhyolite is slippery; seepage from grass above can linger

About Tryfan East Face

Spectacular E-facing mountain face — most prominent feature of the Ogwen Valley. Routes start from Heather Terrace (long diagonal ramp). Clean rock that's almost always climbable, even slightly wet. Morning/midday sun.

Region: North Wales — Ogwen
Rock type: Rhyolite
Aspect: east-facing
Altitude: 700m
Exposure: high
Seepage: low

Other crags in this region

Idwal Slabs