75% chance of a view, in and out of it all day.
Cloud base sits about 130 m above the summit, so the top should stay under a ceiling rather than in it.
Forecast for Friday 16 October, built 2026-10-16 16:22 UTC and rebuilt twice a day. A high number is close to reliable, a low one is barely better than a shrug: how reliable is this?
The hill
- Lists
- Hewitt, Nuttall, Marilyn
- Height
- 676 m (261 m of drop)
- Area
- The Carneddau
- County
- Conwy, Wales
- Grid ref
- SH729615
- OS Landranger
- 115
- Summit
- cairn
Sun
- Sunrise
- 06:44 ESE
- Sunset
- 17:18 WSW
- Daylight
- 10.57 hours
About Creigiau Gleision
Creigiau Gleision is a mountain in Snowdonia, Wales, near Capel Curig. It is the easternmost of the high Carneddau and is separated from the others by Llyn Cowlyd. Directly across this reservoir from Creigiau Gleision is Pen Llithrig y Wrach. To the north-east it runs into the broad ridge of Cefn Cyfarwydd.
Hour by hour, Friday 16 October
| Hour | View | Cloud base | Temp | Wind |
|---|---|---|---|---|
| 06:00 | 69% | 509 m | 5.1° | 24 WNW |
| 08:00 | 75% | 612 m | 4.9° | 23 WNW |
| 10:00 | 61% | 650 m | 5.4° | 19 WNW |
| 12:00 | 74% | 806 m | 5.7° | 20 WNW |
| 14:00 | 80% | 868 m | 5.8° | 22 WNW |
| 16:00 | 70% | 754 m | 5.3° | 27 WNW |
| 18:00 | 72% | 716 m | 5.2° | 28 NW |
| 20:00 | 60% | 709 m | 5.7° | 22 N |
Nearby
Creigiau Gleision North Top · Pen Llithrig y Wrach · Pen yr Helgi Du · Gallt yr Ogof · Carnedd Llewelyn · Foel Grach
All Snowdonia hills for Friday 16 October · The week ahead · How to read this