Climbing Forecast › Scotland - Islands — Arran › Glen Sannox (Arran)

SCOTLAND - ISLANDS — ARRAN · GRANITE

Glen Sannox (Arran) climbing conditions

Caution — drying out or marginal

Right now

Temp12°C
Wind22 km/h
Gusts33 km/h
Humidity72.2%
Rain 48h3mm
Last rain32h ago

Assessment

Should be dry
High seepage — may still be weeping
Good friction temperature range for granite
Breezy — good for drying

7-day forecast

Scroll through each day — hourly detail is shown inline.

Today Monday 28 September
Caution
Temp0°C
Raindry
Wind22 km/h
Gusts33 km/h
Humidity72%
Should be dryHigh seepage — may still be weeping
Time °C Rain Wind (km/h) Gust Hum
10:00 — dry — — null%
18:00 12° dry 22 — 72.2%
19:00 12° dry 28 — 73.9%
20:00 12° dry 27 — 77.1%
21:00 12° dry 24 — 81%
Tue Tuesday 29 September
Poor
Temp15°C
Rain2mm
Wind40 km/h
Gusts—
Humidity79%
2mm rain forecastWind 40 km/h, gusts 0 km/h — too windy
  • Good conditions for granite
  • Very windy — exposed routes will be unpleasant
  • Very windy — consider sheltered alternatives
Time °C Rain Wind (km/h) Gust Hum
06:00 11° dry 39 — 79.8%
07:00 11° dry 40 — 79.4%
08:00 12° dry 40 — 81%
09:00 12° dry 41 — 82.1%
10:00 13° dry 37 — 82.1%
11:00 14° dry 41 — 79.5%
12:00 15° dry 41 — 78.7%
13:00 16° dry 39 — 77.8%
14:00 16° dry 39 — 76.9%
15:00 16° dry 41 — 78.2%
16:00 16° dry 45 — 80.6%
17:00 16° 0.2mm 44 — 83.1%
18:00 16° 0.6mm 42 — 87.1%
19:00 16° dry 39 — 90.6%
20:00 16° dry 39 — 88.8%
21:00 17° 0.4mm 43 — 87%
Wed Wednesday 30 September
Poor
Temp15°C
Rain24mm
Wind41 km/h
Gusts—
Humidity82%
23.5mm rain forecastWind 41 km/h, gusts 0 km/h — too windy
  • Good conditions for granite
  • Very windy — exposed routes will be unpleasant
  • Very windy — consider sheltered alternatives
Time °C Rain Wind (km/h) Gust Hum
06:00 15° dry 28 — 96.6%
07:00 15° dry 27 — 95.5%
08:00 15° 0.3mm 29 — 92.9%
09:00 15° dry 32 — 93.9%
10:00 15° 0.3mm 35 — 87.4%
11:00 15° 0.3mm 43 — 87.4%
12:00 15° dry 42 — 87%
13:00 16° dry 43 — 79.9%
14:00 16° dry 43 — 79.1%
15:00 16° dry 41 — 78.2%
16:00 15° 0.4mm 41 — 75.6%
17:00 15° 0.4mm 37 — 86.1%
18:00 14° 0.7mm 36 — 85.9%
19:00 14° 0.4mm 34 — 88.7%
20:00 13° 0.6mm 31 — 88.7%
21:00 13° 0.9mm 30 — 88.8%
Thu Thursday 1 October
Caution
Temp14°C
Rain0.2mm
Wind21 km/h
Gusts—
Humidity74%
Drying — 15h since rain
  • Good conditions for granite
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 11° dry 22 — 93.4%
12:00 14° dry 21 — 74.3%
18:00 13° dry 18 — 73.2%
Fri Friday 2 October
Poor
Temp15°C
Rain2mm
Wind23 km/h
Gusts—
Humidity83%
2mm rain forecast
  • Good conditions for granite
  • Breezy — helps drying
Time °C Rain Wind (km/h) Gust Hum
06:00 12° 0.5mm 19 — 92%
12:00 15° 1mm 23 — 82.9%
18:00 13° 0.4mm 16 — 94.7%
Sat Saturday 3 October
Caution
Temp14°C
Raindry
Wind14 km/h
Gusts—
Humidity59%
Should be dryHigh seepage — may still be weeping
  • Good conditions for granite
Time °C Rain Wind (km/h) Gust Hum
06:00 10° dry 13 — 89.3%
12:00 14° dry 14 — 58.8%
18:00 11° dry 7 — 73%
Sun Sunday 4 October
Poor
Temp15°C
Rain0.4mm
Wind19 km/h
Gusts—
Humidity92%
0.4mm rain forecastHumidity 92% — potential fog
  • Good conditions for granite
Time °C Rain Wind (km/h) Gust Hum
06:00 12° dry 20 — 92.6%
12:00 15° dry 19 — 92%
18:00 15° 0.2mm 18 — 93.9%
Mon Monday 5 October
Poor
Temp15°C
Rain0.9mm
Wind18 km/h
Gusts—
Humidity94%
0.9mm rain forecastHumidity 94% — potential fog
  • Good conditions for granite
Time °C Rain Wind (km/h) Gust Hum
06:00 14° 0.3mm 20 — 93.8%
12:00 15° 0.2mm 18 — 94.4%
18:00 15° 0.2mm 16 — 95.2%

About Glen Sannox (Arran)

Glen Sannox (Arran) offers majestic, high-altitude mountain climbing set amidst the granite peaks of Cir Mhor and Ceum na Caillich on the Isle of Arran. The rock is coarse, granite of magnificent quality, featuring friction slabs, clean corners, and giant horizontal flakes. Facing east and northeast in a wild mountain horseshoe, the upper crags catch morning light but take time to dry after rain due to mountain mist. The climbing encompasses long multi-pitch mountain traditional classics, ranging from friendly VDiffs to technical E-grade granite face climbs, led by Labyrinth. The approach requires a sustained ninety-minute walk up Glen Sannox along built trails from the Sannox village parking area. Rapid mountain weather changes and lengthy descents demand proper mountain preparation.

Region
Scotland - Islands — Arran
Rock type
Granite
Aspect
east-facing
Altitude
450m
Exposure
high
Seepage
high

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