Climbing Forecast › North Wales — Llŷn Peninsula › Porth Ysgo

NORTH WALES — LLŶN PENINSULA · DOLERITE · tidal

Porth Ysgo weather & climbing conditions

Good — dry and climbable

Right now

Temp12°C
Wind10 km/h
Gusts15 km/h
Humidity82.3%
Rain 48hdry
Last rainNone recent

Assessment

No recent rain
Tidal access: Some of the boulders on the beach are tidal — climb around low water for the seaward blocs. The upper blocs stay clear of the sea.
Good friction temperature range for dolerite

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Saturday 31 October
Good
Temp12°C
Raindry
Wind10 km/h
Gusts15 km/h
Humidity82%
No recent rain
  • Good friction range for dolerite
  • Dolerite climbs well when dry
Time °C Rain Wind (km/h) Gust Hum
09:00 — dry — — null%
17:00 12° dry 10 — 82.3%
18:00 12° dry 9 — 79%
19:00 13° dry 7 — 76.4%
20:00 12° dry 5 — 76.7%
21:00 12° dry 7 — 85.2%
Sun Sunday 1 November
Good
Temp12°C
Raindry
Wind34 km/h
Gusts—
Humidity77%
No recent rain
  • Good friction range for dolerite
  • Dolerite climbs well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 13° dry 31 — 88.6%
07:00 13° dry 32 — 84.7%
08:00 12° dry 34 — 82.2%
09:00 12° dry 33 — 80.1%
10:00 12° dry 34 — 79.5%
11:00 12° dry 35 — 77.8%
12:00 12° dry 35 — 77%
13:00 12° dry 35 — 75.9%
14:00 12° dry 34 — 75.4%
15:00 12° dry 34 — 76.2%
16:00 12° dry 34 — 76.6%
17:00 11° dry 34 — 77.7%
18:00 11° dry 32 — 79.9%
19:00 11° dry 31 — 82.4%
20:00 11° dry 30 — 82.6%
21:00 11° dry 28 — 82.9%
Mon Monday 2 November
Good
Temp11°C
Raindry
Wind22 km/h
Gusts—
Humidity72%
No recent rain
  • Good friction range for dolerite
  • Dolerite climbs well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 9° dry 20 — 81.1%
07:00 9° dry 19 — 81.5%
08:00 9° dry 20 — 82%
09:00 10° dry 20 — 80.2%
10:00 10° dry 21 — 77%
11:00 11° dry 21 — 74.3%
12:00 12° dry 19 — 70.8%
13:00 12° dry 20 — 68.5%
14:00 12° dry 22 — 68.5%
15:00 12° dry 24 — 69.5%
16:00 11° dry 25 — 72.1%
17:00 11° dry 26 — 75.3%
18:00 10° dry 25 — 79.3%
19:00 10° dry 23 — 82%
20:00 10° dry 22 — 83.8%
21:00 10° dry 21 — 84.9%
Tue Tuesday 3 November
Good
Temp12°C
Raindry
Wind23 km/h
Gusts—
Humidity82%
No recent rain
  • Good friction range for dolerite
  • Dolerite climbs well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 10° dry 25 — 88.9%
12:00 12° dry 23 — 82.4%
18:00 11° dry 21 — 84.3%
Wed Wednesday 4 November
Good
Temp12°C
Raindry
Wind22 km/h
Gusts—
Humidity74%
No recent rain
  • Good friction range for dolerite
  • Dolerite climbs well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 9° dry 20 — 81.1%
12:00 12° dry 22 — 74%
18:00 11° dry 21 — 73.9%
Thu Thursday 5 November
Good
Temp10°C
Raindry
Wind25 km/h
Gusts—
Humidity71%
No recent rain
  • Good friction range for dolerite
  • Dolerite climbs well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 9° dry 22 — 82.8%
12:00 10° dry 25 — 71.2%
18:00 10° dry 18 — 72.9%
Fri Friday 6 November
Good
Temp11°C
Raindry
Wind22 km/h
Gusts—
Humidity78%
No recent rain
  • Good friction range for dolerite
  • Dolerite climbs well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 9° dry 21 — 84.4%
12:00 11° dry 22 — 78.1%
18:00 11° dry 20 — 81.2%
Sat Saturday 7 November
Good
Temp10°C
Raindry
Wind15 km/h
Gusts—
Humidity77%
No recent rain
  • Good friction range for dolerite
  • Dolerite climbs well when dry
Time °C Rain Wind (km/h) Gust Hum
06:00 10° dry 21 — 84%
12:00 10° dry 15 — 76.5%
18:00 10° dry 16 — 81.2%
Tidal access
Some of the boulders on the beach are tidal — climb around low water for the seaward blocs. The upper blocs stay clear of the sea.

About Porth Ysgo

Widely regarded as the best bouldering venue in North Wales — a scattered field of dolerite blocs on a National Trust beach at the tip of the Llŷn Peninsula, near Aberdaron. The rock is coarse-grained coastal dolerite (some call it gabbro) that offers unbeatable friction but is tough on skin in warmer temperatures. Because of its south-west aspect and open sea position, the venue thrives as a winter destination — sun on the beach all day, dry sea breezes, and rock warm enough to climb on when the mountains are frozen out. Many highball problems with barnacled or sloping landings, so pads are essential. Tidal for the seaward blocs — check tides before heading down the steep path from Uwchmynydd.

Region
North Wales — Llŷn Peninsula
Rock type
Dolerite
Aspect
south-west-facing
Altitude
10m
Exposure
medium
Seepage
low

Other crags in this region

Cilan HeadCraig DorysTrwyn y Gorlech (Yr Eifl)