Right now

Temp13°C

Wind13 km/h

Gusts19 km/h

Humidity74.2%

Rain 48h2mm

Last rain32h ago

Assessment

Drying — 26h since rain

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Monday 28 September

Caution

Temp0°C

Raindry

Wind13 km/h

Gusts19 km/h

Humidity74%

Drying — 26h since rain

Limestone should be fine if dry

Time °C Rain Wind (km/h) Gust Hum

10:00 — dry — — null%

18:00 13° dry 13 — 74.2%

19:00 12° dry 13 — 74%

20:00 12° dry 16 — 71.1%

21:00 12° dry 19 — 69.9%

Tue Tuesday 29 September

Poor

Temp20°C

Rain1mm

Wind28 km/h

Gusts—

Humidity80%

1.2mm rain forecast

Wet limestone is dangerously slippery
Breezy — helps drying

Time °C Rain Wind (km/h) Gust Hum

06:00 14° dry 25 — 96%

07:00 15° dry 25 — 95.8%

08:00 15° dry 28 — 95%

09:00 16° dry 30 — 92.4%

10:00 18° 0.2mm 29 — 87.1%

11:00 19° 0.1mm 27 — 86.8%

12:00 20° dry 27 — 84.5%

13:00 21° dry 30 — 78.8%

14:00 22° dry 27 — 76.1%

15:00 22° dry 26 — 73.4%

16:00 21° dry 30 — 75%

17:00 21° dry 30 — 78.3%

18:00 20° dry 29 — 82.4%

19:00 20° dry 31 — 83.5%

20:00 20° dry 30 — 82.6%

21:00 20° 0.2mm 29 — 84.7%

Wed Wednesday 30 September

Poor

Temp19°C

Rain15mm

Wind23 km/h

Gusts—

Humidity69%

14.8mm rain forecast

Wet limestone is dangerously slippery
Breezy — helps drying

Time °C Rain Wind (km/h) Gust Hum

06:00 17° dry 20 — 93.9%

07:00 16° dry 21 — 92.3%

08:00 17° dry 22 — 90.4%

09:00 18° dry 22 — 84.4%

10:00 18° dry 22 — 78.9%

11:00 19° dry 21 — 74.2%

12:00 19° dry 25 — 68.4%

13:00 19° dry 23 — 64.5%

14:00 19° dry 25 — 64.7%

15:00 19° 0.1mm 25 — 64.3%

16:00 18° 0.4mm 23 — 67.9%

17:00 16° 0.3mm 22 — 84.6%

18:00 15° dry 18 — 90.2%

19:00 15° dry 20 — 87.9%

20:00 14° dry 20 — 88.3%

21:00 14° dry 19 — 89.7%

Thu Thursday 1 October

Poor

Temp16°C

Rain2mm

Wind19 km/h

Gusts—

Humidity67%

1.6mm rain forecast

Wet limestone is dangerously slippery

Time °C Rain Wind (km/h) Gust Hum

06:00 11° 0.2mm 18 — 97.1%

12:00 16° dry 19 — 67.1%

18:00 14° dry 11 — 77.4%

Fri Friday 2 October

Good

Temp18°C

Rain0.2mm

Wind17 km/h

Gusts—

Humidity68%

Should be dry

Limestone should be fine if dry

Time °C Rain Wind (km/h) Gust Hum

06:00 13° dry 11 — 91.9%

12:00 18° 0.1mm 17 — 68.3%

18:00 16° dry 8 — 81.9%

Sat Saturday 3 October

Good

Temp19°C

Rain0.1mm

Wind9 km/h

Gusts—

Humidity74%

Should be dry

Limestone should be fine if dry

Time °C Rain Wind (km/h) Gust Hum

06:00 14° dry 10 — 98.1%

12:00 19° dry 9 — 74.2%

18:00 15° dry 8 — 93%

Sun Sunday 4 October

Good

Temp16°C

Raindry

Wind6 km/h

Gusts—

Humidity72%

Should be dry

Limestone should be fine if dry

Time °C Rain Wind (km/h) Gust Hum

06:00 9° dry 6 — 89.9%

12:00 16° dry 6 — 71.8%

18:00 14° dry 4 — 92.6%

Mon Monday 5 October

Good

Temp17°C

Raindry

Wind8 km/h

Gusts—

Humidity76%

Should be dry

Limestone should be fine if dry

Time °C Rain Wind (km/h) Gust Hum

06:00 10° dry 4 — 97.4%

12:00 17° dry 8 — 75.5%

18:00 13° dry 5 — 94.2%

About Castell Coch Quarry

Castell Coch Quarry is a historic limestone quarry hidden in woods near Tongwynlais on the northern edge of Cardiff. The rock character consists of smooth, quarried Carboniferous limestone with delicate friction slabs, sharp pocketed face features, and small crimps. Facing southeast within a wooded valley side, the crag captures morning sun and dries reasonably quickly, though surrounding tree cover can retain humidity after rain. The climbing offers a mix of bolted sport routes and traditional wall climbs from Severe to 7a, with Castell Coch Wall serving as a standout line. The approach takes ten minutes up woodland paths from roadside parking areas in Tongwynlais. Dense summer foliage keeps inner quarry corners damp, making spring and autumn ideal.

Region: South Wales — Cardiff Area
Rock type: Limestone
Aspect: south-east-facing
Altitude: 110m
Exposure: low
Seepage: medium