Right now

Temp12°C

Wind35 km/h

Gusts52 km/h

Humidity75.6%

Rain 48hdry

Last rainNone recent

Assessment

1.4mm rain forecast

Windy — 36 km/h, gusts 0 km/h

Good friction temperature range for granite

Windy — 35 km/h, gusts 52 km/h. Take care on exposed routes

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Thursday 17 September

Poor

Temp13°C

Rain1mm

Wind36 km/h

Gusts52 km/h

Humidity72%

1.4mm rain forecastWindy — 36 km/h, gusts 0 km/h

Good conditions for granite
Very windy — exposed routes will be unpleasant
Very windy — consider sheltered alternatives

Time °C Rain Wind (km/h) Gust Hum

09:00 12° dry 35 — 75.6%

10:00 12° dry 37 — 78.6%

11:00 13° 0.2mm 37 — 76.1%

12:00 13° 0.1mm 37 — 71.7%

13:00 13° dry 34 — 71.9%

14:00 14° 0.2mm 35 — 67.6%

15:00 14° 0.2mm 35 — 66.9%

16:00 13° dry 35 — 70.2%

17:00 13° dry 32 — 70.7%

18:00 13° 0.3mm 32 — 72.1%

19:00 13° 0.2mm 36 — 72.9%

20:00 13° dry 38 — 73.4%

21:00 13° 0.1mm 35 — 73.1%

Fri Friday 18 September

Poor

Temp13°C

Rain9mm

Wind44 km/h

Gusts—

Humidity86%

9.3mm rain forecastWind 44 km/h, gusts 0 km/h — too windyHumidity 86% — potential fog

Good conditions for granite
Very windy — exposed routes will be unpleasant
Very windy — consider sheltered alternatives

Time °C Rain Wind (km/h) Gust Hum

06:00 11° dry 27 — 84.7%

07:00 12° dry 30 — 83.9%

08:00 12° dry 35 — 80.1%

09:00 13° dry 36 — 77.2%

10:00 13° 0.4mm 41 — 76.1%

11:00 13° 0.5mm 41 — 81.2%

12:00 13° 1mm 44 — 82.4%

13:00 13° 2mm 47 — 88%

14:00 12° 1mm 47 — 89.5%

15:00 13° 3mm 42 — 91%

16:00 13° 0.6mm 45 — 93.6%

17:00 14° dry 45 — 94%

18:00 14° dry 43 — 93.5%

19:00 14° dry 41 — 93.3%

20:00 14° dry 41 — 92.8%

21:00 14° dry 41 — 93.1%

Sat Saturday 19 September

Poor

Temp15°C

Rain1mm

Wind29 km/h

Gusts—

Humidity87%

1.1mm rain forecastWindy — 29 km/h, gusts 0 km/hHumidity 87% — potential fog

Good conditions for granite
Breezy — helps drying

Time °C Rain Wind (km/h) Gust Hum

06:00 14° dry 39 — 94%

07:00 14° dry 39 — 93.5%

08:00 14° 0.3mm 34 — 92.4%

09:00 15° 0.3mm 36 — 91.7%

10:00 15° 0.3mm 35 — 91.9%

11:00 15° 0.2mm 30 — 90.3%

12:00 15° dry 30 — 86.1%

13:00 15° dry 32 — 83.6%

14:00 15° dry 30 — 85.3%

15:00 15° dry 24 — 85.8%

16:00 15° dry 23 — 88.2%

17:00 14° dry 26 — 86.5%

18:00 14° dry 30 — 77.6%

19:00 14° dry 30 — 75.3%

20:00 14° dry 31 — 78.9%

21:00 14° dry 30 — 78.9%

Sun Sunday 20 September

Good

Temp13°C

Raindry

Wind19 km/h

Gusts—

Humidity74%

Should be dry

Good conditions for granite

Time °C Rain Wind (km/h) Gust Hum

06:00 11° dry 23 — 77.3%

12:00 13° dry 19 — 73.9%

18:00 12° dry 8 — 77.1%

Mon Monday 21 September

Good

Temp14°C

Raindry

Wind18 km/h

Gusts—

Humidity81%

Should be dry

Good conditions for granite

Time °C Rain Wind (km/h) Gust Hum

06:00 12° dry 11 — 86.9%

12:00 14° dry 18 — 80.7%

18:00 15° dry 14 — 91.4%

Tue Tuesday 22 September

Poor

Temp16°C

Rain0.3mm

Wind12 km/h

Gusts—

Humidity83%

0.3mm rain forecast

Good conditions for granite

Time °C Rain Wind (km/h) Gust Hum

06:00 14° dry 9 — 95.4%

12:00 16° 0.1mm 12 — 83%

18:00 14° dry 5 — 91.7%

Wed Wednesday 23 September

Good

Temp17°C

Raindry

Wind11 km/h

Gusts—

Humidity78%

Should be dry

Good conditions for granite

Time °C Rain Wind (km/h) Gust Hum

06:00 12° dry 8 — 93.6%

12:00 17° dry 11 — 77.6%

18:00 16° dry 1 — 85.2%

Thu Thursday 24 September

Good

Temp17°C

Raindry

Wind24 km/h

Gusts—

Humidity73%

Should be dry

Good conditions for granite
Breezy — helps drying

Time °C Rain Wind (km/h) Gust Hum

06:00 13° dry 15 — 86.3%

12:00 17° dry 24 — 72.7%

18:00 17° dry 25 — 75.5%

Bird ban (1 February to 31 July)
Rock Pipits and Choughs nest on Avernus, Lord of the Spiders, and near the top of Tan Y Llyn — avoid or use variants.

About Trwyn y Gorlech (Yr Eifl)

A cluster of buttresses, gullies and crags along the coast south-west of Trefor on the north-western flank of Yr Eifl on the Llŷn Peninsula. Big multi-pitch adventure climbing on the microgranite/granophyre of the Yr Eifl massif. No. 5 Buttress is the largest and holds Avernus, one of the most highly regarded Welsh sea-cliff routes. Access is either directly from the beach or by long abseils from above.

Region: North Wales — Llŷn Peninsula
Rock type: Granite
Aspect: north-facing
Altitude: 150m
Exposure: high
Seepage: medium

Other crags in this region

Cilan Head Craig Dorys Porth Ysgo