Climbing Forecast › Scotland - Central & Southern — Dumbarton › Dumbarton Rock

SCOTLAND - CENTRAL & SOUTHERN — DUMBARTON · BASALT

Dumbarton Rock weather & climbing conditions

Poor — wet, too windy or closed

Right now

Temp9°C
Wind13 km/h
Gusts19 km/h
Humidity96.7%
Rain 48h2mm
Last rain12h ago

Assessment

2.2mm rain forecast
Good friction temperature range for basalt
High humidity (96.7%) — basalt friction compromised, particularly for bouldering
Humidity 96.7% — potential fog/cloud, rock may be damp from condensation

Drying Time

49% dry · 18-35h to dry

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Wednesday 21 October
Poor
Temp11°C
Rain2mm
Wind12 km/h
Gusts19 km/h
Humidity88%
2.2mm rain forecast
  • Good friction range for basalt
  • Wet basalt is slick — wait for the rock to dry
Time °C Rain Wind (km/h) Gust Hum
06:00 9° dry 8 — 97.7%
07:00 9° dry 5 — 97.7%
08:00 9° dry 5 — 97%
09:00 10° dry 4 — 95.6%
10:00 10° dry 5 — 96.4%
11:00 11° dry 7 — 95.6%
12:00 11° dry 8 — 93.7%
13:00 11° dry 10 — 88.9%
14:00 12° dry 13 — 81.7%
15:00 12° 0.2mm 13 — 78%
16:00 11° 0.3mm 26 — 84.7%
17:00 9° 0.4mm 31 — 89.5%
18:00 8° 0.5mm 27 — 88%
19:00 8° 0.5mm 24 — 90.5%
20:00 8° 0.2mm 22 — 91.2%
21:00 8° dry 20 — 91.1%
Thu Thursday 22 October
Poor
Temp10°C
Rain0.5mm
Wind16 km/h
Gusts—
Humidity73%
0.5mm rain forecast
  • Good friction range for basalt
  • Wet basalt is slick — wait for the rock to dry
Time °C Rain Wind (km/h) Gust Hum
06:00 6° dry 10 — 84.8%
07:00 6° dry 11 — 87.1%
08:00 6° dry 11 — 87.6%
09:00 7° dry 12 — 85.8%
10:00 8° dry 13 — 81.2%
11:00 9° dry 16 — 76.3%
12:00 10° 0.1mm 18 — 71%
13:00 10° 0.2mm 17 — 70.4%
14:00 11° 0.2mm 18 — 71.2%
15:00 11° dry 18 — 71.5%
16:00 11° dry 15 — 72.3%
17:00 10° dry 13 — 77.8%
18:00 8° dry 11 — 84.7%
19:00 7° dry 11 — 88.3%
20:00 7° dry 11 — 88.8%
21:00 7° dry 9 — 88.9%
Fri Friday 23 October
Poor
Temp6°C
Rain29mm
Wind24 km/h
Gusts—
Humidity94%
29mm rain forecastHumidity 94% — potential fog
  • Wet basalt is slick — wait for the rock to dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 6° 3mm 9 — 96.4%
07:00 7° 5mm 9 — 96.1%
08:00 7° 6mm 15 — 95.6%
09:00 6° 5mm 22 — 93.9%
10:00 6° 4mm 23 — 96.5%
11:00 6° 2mm 23 — 96.1%
12:00 6° 1mm 24 — 94.9%
13:00 6° 0.9mm 25 — 93.7%
14:00 6° 0.4mm 24 — 92.9%
15:00 7° 0.1mm 23 — 92.1%
16:00 7° dry 22 — 90%
17:00 7° dry 21 — 87.1%
18:00 7° dry 19 — 83.6%
19:00 7° dry 19 — 78.8%
Sat Saturday 24 October
Poor
Temp9°C
Rain3mm
Wind24 km/h
Gusts—
Humidity87%
2.6mm rain forecast
  • Good friction range for basalt
  • Wet basalt is slick — wait for the rock to dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
07:00 7° dry 10 — 83.6%
13:00 9° 2mm 24 — 87.1%
19:00 13° 0.7mm 30 — 95.8%
Sun Sunday 25 October
Poor
Temp9°C
Rain2mm
Wind25 km/h
Gusts—
Humidity81%
1.6mm rain forecast
  • Good friction range for basalt
  • Wet basalt is slick — wait for the rock to dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 9° 0.3mm 44 — 76.7%
12:00 9° 0.3mm 25 — 80.6%
18:00 7° dry 32 — 76.9%
Mon Monday 26 October
Poor
Temp9°C
Rain2mm
Wind17 km/h
Gusts—
Humidity93%
2.1mm rain forecastHumidity 93% — potential fog
  • Good friction range for basalt
  • Wet basalt is slick — wait for the rock to dry
Time °C Rain Wind (km/h) Gust Hum
06:00 8° 0.3mm 16 — 91.2%
12:00 9° 1mm 17 — 93.4%
18:00 14° 0.4mm 36 — 95.9%
Tue Tuesday 27 October
Poor
Temp12°C
Rain0.7mm
Wind28 km/h
Gusts—
Humidity64%
0.7mm rain forecast
  • Good friction range for basalt
  • Wet basalt is slick — wait for the rock to dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 8° 0.1mm 28 — 88.7%
12:00 12° dry 28 — 64.3%
18:00 9° dry 21 — 83.6%
Wed Wednesday 28 October
Poor
Temp12°C
Rain0.4mm
Wind24 km/h
Gusts—
Humidity79%
0.4mm rain forecast
  • Good friction range for basalt
  • Wet basalt is slick — wait for the rock to dry
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 10° dry 25 — 93.4%
12:00 12° dry 24 — 79.1%
18:00 10° dry 19 — 72.4%

About Dumbarton Rock

Volcanic plug above the Clyde. Basalt is frictionless when wet but excellent friction when dry. North-facing — cool in summer with afternoon sun rounding the cliff. Quick drying in prevailing westerly. Year-round venue; March–April often the best conditions.

Region
Scotland - Central & Southern — Dumbarton
Rock type
Basalt
Aspect
north-facing
Altitude
73m
Exposure
low
Seepage
low