Right now

Temp15°C

Wind23 km/h

Gusts35 km/h

Humidity75.4%

Rain 48h0.8mm

Last rain32h ago

Assessment

Drying — 26h since rain

Tidal access: Base completely cut off at high tide — climb strictly 2h either side of low water.

Breezy — good for drying

loose_rock

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Monday 28 September

Caution

Temp0°C

Raindry

Wind23 km/h

Gusts35 km/h

Humidity75%

Drying — 26h since rain

Limestone should be fine if dry

Time °C Rain Wind (km/h) Gust Hum

10:00 — dry — — null%

18:00 15° dry 23 — 75.4%

19:00 14° dry 23 — 73.6%

20:00 13° dry 24 — 74.6%

21:00 13° dry 25 — 73.9%

Tue Tuesday 29 September

Poor

Temp18°C

Rain3mm

Wind39 km/h

Gusts—

Humidity82%

3.1mm rain forecast

Wet limestone is dangerously slippery
Very windy — consider sheltered alternatives

Time °C Rain Wind (km/h) Gust Hum

06:00 13° dry 35 — 88%

07:00 14° dry 36 — 88.3%

08:00 14° dry 39 — 87.9%

09:00 15° dry 41 — 87.3%

10:00 16° dry 38 — 86.9%

11:00 16° dry 36 — 86.2%

12:00 17° dry 41 — 83.5%

13:00 18° dry 41 — 81.1%

14:00 19° dry 42 — 79.9%

15:00 20° dry 40 — 80.9%

16:00 20° dry 38 — 78.6%

17:00 21° dry 35 — 74.3%

18:00 20° dry 35 — 72.8%

19:00 20° dry 36 — 73.6%

20:00 20° 0.6mm 37 — 76.5%

21:00 19° 0.2mm 35 — 82.5%

Wed Wednesday 30 September

Poor

Temp17°C

Rain9mm

Wind30 km/h

Gusts—

Humidity76%

8.7mm rain forecast

Wet limestone is dangerously slippery
Breezy — helps drying

Time °C Rain Wind (km/h) Gust Hum

06:00 16° dry 22 — 88.6%

07:00 16° dry 22 — 88.1%

08:00 16° 0.1mm 23 — 87.3%

09:00 16° 0.2mm 25 — 84.8%

10:00 17° 0.2mm 27 — 81.5%

11:00 17° 0.1mm 31 — 78.2%

12:00 17° 0.2mm 31 — 73.8%

13:00 17° 0.2mm 31 — 74.1%

14:00 17° 0.2mm 33 — 73.3%

15:00 17° 0.3mm 30 — 73.9%

16:00 16° 0.2mm 28 — 80.4%

17:00 15° dry 24 — 82.7%

18:00 15° dry 23 — 83.1%

19:00 15° 0.1mm 24 — 82.7%

20:00 14° dry 18 — 84.9%

21:00 14° dry 17 — 85.6%

Thu Thursday 1 October

Poor

Temp15°C

Rain0.3mm

Wind20 km/h

Gusts—

Humidity72%

0.3mm rain forecast

Wet limestone is dangerously slippery

Time °C Rain Wind (km/h) Gust Hum

06:00 13° dry 24 — 84.7%

12:00 15° 0.2mm 20 — 71.9%

18:00 14° dry 20 — 75.2%

Fri Friday 2 October

Poor

Temp16°C

Rain1mm

Wind24 km/h

Gusts—

Humidity85%

1.3mm rain forecast

Wet limestone is dangerously slippery
Breezy — helps drying

Time °C Rain Wind (km/h) Gust Hum

06:00 15° 0.7mm 22 — 87.9%

12:00 16° 0.3mm 24 — 85.2%

18:00 16° 0.1mm 26 — 88.4%

Sat Saturday 3 October

Poor

Temp14°C

Rain0.2mm

Wind7 km/h

Gusts—

Humidity71%

Only 12h since rain — needs ~42h

Limestone should be fine if dry

Time °C Rain Wind (km/h) Gust Hum

06:00 13° dry 13 — 84.8%

12:00 14° dry 7 — 70.7%

18:00 13° dry 3 — 74.2%

Sun Sunday 4 October

Good

Temp17°C

Raindry

Wind8 km/h

Gusts—

Humidity67%

Should be dry

Limestone should be fine if dry

Time °C Rain Wind (km/h) Gust Hum

06:00 9° dry 7 — 94.3%

12:00 17° dry 8 — 67.2%

18:00 15° dry 10 — 80.2%

Mon Monday 5 October

Good

Temp18°C

Raindry

Wind17 km/h

Gusts—

Humidity80%

Should be dry

Limestone should be fine if dry

Time °C Rain Wind (km/h) Gust Hum

06:00 15° dry 19 — 92.1%

12:00 18° dry 17 — 79.7%

18:00 15° dry 14 — 88.4%

Tidal access
Base completely cut off at high tide — climb strictly 2h either side of low water.

Bird ban (03-01 to 07-31)
Bird ban enforced on specific sectors near seabird colonies; check local notices.

About Pen Trwyn

Pen Trwyn is an iconic limestone headland on the Great Orme near Llandudno, offering magnificent, sheer sea cliff climbing. The rock is dark, pocketed Carboniferous limestone featuring steep wall climbing, technical footwork, and pumpy hold sequences. Facing north directly over the sea, the cliff receives minimal sunshine and can retain sea dampness or seepage after rain. The venue is famous for serious traditional climbs and historical testpieces, dominated by routes like Mousetrap and Overhanging Wall. Access involves descending steep paths or abseiling from the Marine Drive toll road above. Absolute tidal cutoff, ocean swell hazards, and loose rock fragments on upper exit ramps demand careful planning.

Region: North Wales — Llandudno
Rock type: Limestone
Aspect: north-facing
Altitude: 30m
Exposure: low
Seepage: medium

Other crags in this region

Little Orme Lower Pen Trwyn Marine Drive (Great Orme)Parisella's Cave