Climbing Forecast › North Wales — Anglesey (Holy Island) › Trearddur Bay

NORTH WALES — ANGLESEY (HOLY ISLAND) · QUARTZITE · tidal

Trearddur Bay climbing conditions

Caution — drying out or marginal

Right now

Temp14°C
Wind40 km/h
Gusts60 km/h
Humidity81.4%
Rain 48hdry
Last rainNone recent

Assessment

No recent rain
Windy — 40 km/h, gusts 0 km/h
Tidal access: Sea-cliff — routes below the high-water mark are tidal. Check the local tide table and sea state before descending.
Strong onshore wind — sea spray may wet the rock
Good friction temperature range for quartzite

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Thursday 17 September
Caution
Temp15°C
Rain0.1mm
Wind40 km/h
Gusts60 km/h
Humidity74%
No recent rainWindy — 40 km/h, gusts 0 km/h
  • Quartzite holds friction well when dry
  • Very windy — consider sheltered alternatives
Time °C Rain Wind (km/h) Gust Hum
09:00 14° dry 40 — 81.4%
10:00 14° dry 41 — 81.3%
11:00 15° dry 41 — 75.7%
12:00 15° dry 40 — 75.9%
13:00 15° dry 39 — 73.8%
14:00 16° dry 39 — 72.1%
15:00 16° 0.1mm 39 — 71.8%
16:00 15° dry 41 — 70.4%
17:00 15° dry 35 — 72.4%
18:00 16° dry 36 — 71.3%
19:00 16° dry 42 — 72.3%
20:00 15° dry 41 — 72.9%
21:00 15° dry 38 — 74.6%
Fri Friday 18 September
Poor
Temp15°C
Rain6mm
Wind51 km/h
Gusts—
Humidity84%
5.8mm rain forecastWind 51 km/h, gusts 0 km/h — too windy
  • Wet quartzite is slippery but not damaged by climbing
  • Very windy — consider sheltered alternatives
Time °C Rain Wind (km/h) Gust Hum
06:00 14° dry 32 — 78.4%
07:00 14° dry 31 — 79.1%
08:00 14° dry 37 — 82.6%
09:00 15° 0.3mm 39 — 82.5%
10:00 15° 0.2mm 50 — 80.4%
11:00 15° 0.4mm 47 — 82.2%
12:00 15° 2mm 51 — 81.8%
13:00 15° 1mm 55 — 80.3%
14:00 15° 1mm 55 — 85.4%
15:00 15° 0.3mm 46 — 90.1%
16:00 16° 0.2mm 49 — 90.9%
17:00 16° 0.3mm 47 — 90.1%
18:00 16° dry 46 — 90.1%
19:00 17° dry 45 — 89.9%
20:00 17° dry 44 — 89%
21:00 17° dry 46 — 89.2%
Sat Saturday 19 September
Poor
Temp17°C
Rain0.5mm
Wind31 km/h
Gusts—
Humidity82%
0.5mm rain forecast
  • Quartzite holds friction well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 16° 0.2mm 48 — 91.5%
07:00 17° dry 41 — 88.3%
08:00 17° 0.3mm 35 — 89.6%
09:00 16° dry 35 — 91.6%
10:00 17° dry 33 — 88.8%
11:00 17° dry 31 — 84.4%
12:00 17° dry 31 — 82%
13:00 17° dry 34 — 79.9%
14:00 17° dry 34 — 78.6%
15:00 17° dry 28 — 78.8%
16:00 17° dry 28 — 78.3%
17:00 17° dry 32 — 77.9%
18:00 16° dry 32 — 78.8%
19:00 16° dry 32 — 78.6%
20:00 16° dry 39 — 77.8%
21:00 16° dry 39 — 75%
Sun Sunday 20 September
Good
Temp15°C
Raindry
Wind25 km/h
Gusts—
Humidity78%
Should be dry
  • Quartzite holds friction well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 14° dry 32 — 77.3%
12:00 15° dry 25 — 78.3%
18:00 15° dry 13 — 73.8%
Mon Monday 21 September
Good
Temp16°C
Rain0.1mm
Wind26 km/h
Gusts—
Humidity87%
Should be dry
  • Quartzite holds friction well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 15° dry 22 — 86%
12:00 16° dry 26 — 87.3%
18:00 16° dry 21 — 94%
Tue Tuesday 22 September
Caution
Temp17°C
Raindry
Wind17 km/h
Gusts—
Humidity90%
Should be dryHumidity 90% — potential fog
  • Quartzite holds friction well when dry
Time °C Rain Wind (km/h) Gust Hum
06:00 16° dry 13 — 96.5%
12:00 17° dry 17 — 89.8%
18:00 16° dry 12 — 91.3%
Wed Wednesday 23 September
Good
Temp19°C
Raindry
Wind13 km/h
Gusts—
Humidity85%
Should be dry
  • Quartzite holds friction well when dry
Time °C Rain Wind (km/h) Gust Hum
06:00 13° dry 9 — 100%
12:00 19° dry 13 — 85.2%
18:00 18° dry 4 — 82.5%
Thu Thursday 24 September
Good
Temp20°C
Raindry
Wind27 km/h
Gusts—
Humidity76%
Should be dry
  • Quartzite holds friction well when dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 16° dry 18 — 85.6%
12:00 20° dry 27 — 76.3%
18:00 19° dry 30 — 77.3%
Tidal access
Sea-cliff — routes below the high-water mark are tidal. Check the local tide table and sea state before descending.

About Trearddur Bay

A small selection of sea cliffs on the west coast of Holy Island with adventures at all grades. The showcase crag, Face of Adversity, is a steeply overhanging sea cliff. Rock is the same quartzite/meta-sandstone of the South Stack Formation as Porth Dafarch and Gogarth South. Includes the nearby Lon Isallt cove. Seasonal seabird nesting restrictions can apply to some sections during spring/summer — check BMC RAD before visiting.

Region
North Wales — Anglesey (Holy Island)
Rock type
Quartzite
Aspect
west-facing
Altitude
15m
Exposure
medium
Seepage
low

Other crags in this region

Porth Dafarch