Eryri (Snowdonia)
A mixed day in Eryri (Snowdonia), with burns likely to be in spate and a blustery wind.
Sunshine and sky
Sunshine through the day. The time blocks show where the model places the brighter spells.
These are direct modelled sunshine hours during daylight, not the probability of sunshine. Cloud cover and summit cloud are assessed separately in the forecast above. The regional median prevents one unusually bright or dull summit cell defining the whole area.
Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.
High-ground wind (900 m)
At around 900 m, expect a westerly wind of 20–30 mph, gusting 30–40 mph. Gusts like that are strong enough to make walking into it hard work, with buffeting on ridges and edges.
Walking impact
Gusts of 30–40 mph are strong enough to make walking into it hard work, with buffeting on ridges and edges.
Spate risk
High spate risk based on forecast rainfall. Burns and unbridged crossings may become difficult or impassable. Timing and severity can vary between catchments. Check the peak forecast for the separate rain/runoff periods. Turn back if a crossing looks unsafe.
Rain and showers
Drizzle sets in mid-afternoon and becomes heavier later. Expect 2–5 mm in total. Forecast models differ on the amount or timing of rain during the main walking period.
Cloud-free summits
Clear-summit estimate: about 10% early, about 85% around midday and about 10% later.
Cloud and visibility
The tops are likely to drift in and out of cloud, with the best chance of clear tops around midday. The cloud base could be as low as 500–800 m in the early evening.
Temperature and wind chill
At around 900 m it will be 2 to 6°C, feeling like -4 to 0°C in the wind. Take a hat, gloves, a windproof and a spare warm layer. Pack waterproofs too, and keep a warm layer dry in your pack.
Freezing level
The freezing level is close to summit height.
Daylight
Sunrise 07:29, Sunset 18:37, about 11.1 hours daylight.
Overnight · 17:00–08:00Wild campingBetaNot a night to camp on the open hill anywhere in this area: gusts of about 60 mph and heavy rain, around 40 mm. 9/100Poor · 600 m View detailsHide details
Full regional overnight outlook
Not a night to camp on the open hill anywhere in this area. Gusts reach about 60 mph around 900 m and nearer 40 mph around 300 m, strong enough to flatten or tear a tent. Check the forecast for the hill and height you have in mind, and don't assume lower ground will be sheltered. About 40 mm of rain is forecast overnight. Above about 600 m you'd likely be in cloud for part of the night: damp, and hard to find your way if you need to move. Overnight lows of about 4°C at 900 m.
Moon overnight
Waning crescent moon
- Illuminated disc
- 3%
- Moonrise
- 06:04 next morning BST
- Moonset
- 17:39 BST
Cloud and terrain vary across the area. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 8 Oct, 17:00 BST to 9 Oct, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Representative location: 53.069, -4.076. Times vary across the area.
Elevation reference (open ground)
- Wind / gust
- 26 mph / 41 mph
- Coldest
- 5.9°C
- In cloud
- 0% of modelled night
- Condensation
- High
- Wind / gust
- 31 mph / 49 mph
- Coldest
- 5.8°C
- In cloud
- 100% of modelled night
- Condensation
- High
- Wind / gust
- 37 mph / 58 mph
- Coldest
- 4.1°C
- In cloud
- 100% of modelled night
- Condensation
- High
Open-hillside guidance across representative hills. Local shelter, ridges, tent design and the exact pitch can change conditions substantially. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.
Daytime · exposed rockClimbing & scramblingBetaWet rock is likely. Gusts near 35 mph may affect balance on exposed rock. 0/100Poor · Very poor View detailsHide details
Regional climbing & scrambling outlook
A broad guide to dampness and exposed rock across the area, not a forecast for every crag. Lower, sheltered crags and individual rock types may behave differently.
Conditions for exposed scrambling across the area look very poor (0/100). Rain is likely to leave rock wet. Polished slabs, vegetation and drainage lines may be notably worse. Gusts may reach about 35 mph on exposed ground, making crosswinds an important route consideration. Mapped summit-point geology across the representative hills includes volcanic rock and slate or mudstone. Rock can therefore respond differently to moisture between crags and routes.
Representative summit-point samples across the region; individual crags and routes may differ.
Generic exposed hands-on-rock terrain across representative summits; mapped summit-point geology is a broad regional sample, not a named-route survey. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.
Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit
For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.
Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part
Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.
This is about Eryri (Snowdonia) on Thursday 8 October 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Open the questions to take part.
About the research and your privacy · Already been out? Share that experience instead
Weather data: Open-Meteo (CC BY 4.0). Adapted by Mountain Weather.
Updated 8 October 2026 at 15:30 UTC. See typical weekly and monthly conditions for Eryri (Snowdonia).