Summit today
Is it safe to climb Gwaun Cerrig Llwydion today?
Gwaun Cerrig Llwydion today (updated 12:11, 28 Oct): up to 9°C at the summit, feeling as cold as 1°C, summit wind 31 mph gusting 39 mph, 100% chance of rain. A marginal day for the hills. Best day this week: Saturday, summit gusts 15 mph.
Gwaun Cerrig Llwydion weather today
Slight rain, up to 9°C at the summit, feeling as cold as 1°C, summit wind 31 mph gusting 39 mph, 100% chance of rain. Rated Marginal.
Gwaun Cerrig Llwydion weather tomorrow
Thursday 29 October: mostly dry, up to 9°C at the summit, feeling as cold as 2°C, summit wind 28 mph gusting 36 mph, 4% chance of rain. Rated Marginal.
Gwaun Cerrig Llwydion weather this weekend
Saturday 31 October: fog, up to 7°C at the summit, feeling as cold as -1°C, summit wind 12 mph gusting 15 mph, 0% chance of rain. Rated Good.
Sunday 1 November: mostly dry, up to 6°C at the summit, feeling as cold as 0°C, summit wind 22 mph gusting 28 mph, 2% chance of rain. Rated Good.
Gwaun Cerrig Llwydion summit forecast, next 7 days
| Day | Verdict | High/low | Feels like | Wind/gust mph | Rain or snow |
|---|
| TodaySlight rain | Marginal | 9°/5° | 1° | 31/39 | 100% |
|---|
| TomorrowDense drizzle | Marginal | 9°/6° | 2° | 28/36 | 4% |
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| Fri 30Fog | Marginal | 10°/2° | 0° | 29/37 | 0% |
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| Sat 31Fog | Good | 7°/2° | -1° | 12/15 | 0% |
|---|
| Sun 1Light drizzle | Good | 6°/2° | 0° | 22/28 | 2% |
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| Mon 2Light drizzle | Good | 6°/1° | -2° | 19/24 | 4% |
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| Tue 3Overcast | Good | 6°/1° | -1° | 13/17 | 2% |
|---|
Gwaun Cerrig Llwydion 14-day weather forecast: days 8 to 14, less certain
| Day | Verdict | High/low | Feels like | Wind/gust mph | Rain or snow |
|---|
| Wed 4Light drizzle | Marginal | 8°/5° | 0° | 32/40 | 0% |
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| Thu 5Fog | Marginal | 5°/1° | -2° | 33/42 | 2% |
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| Fri 6Fog | Marginal | 5°/1° | -3° | 26/32 | 4% |
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| Sat 7Fog | Good | 6°/0° | -3° | 24/30 | 12% |
|---|
| Sun 8Moderate drizzle | Marginal | 10°/4° | 1° | 33/41 | 21% |
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| Mon 9Slight rain showers | Poor | 10°/8° | 5° | 43/54 | 29% |
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| Tue 10Slight rain showers | Poor | 11°/5° | 1° | 50/62 | 25% |
|---|
Routes up
Routes coming soon
Cloud inversion · 7 days
The chance of standing above a sea of cloud on Gwaun Cerrig Llwydion each morning this week, from overnight temperature, humidity and low cloud below the 730m summit.
Dark sky · 7 days
How dark the sky gets over Gwaun Cerrig Llwydion each night this week, from cloud cover, moonlight and local light pollution.
Snow · 7 days
No snow is forecast at the summit in the next 7 days.
Sun today
Sunrise 07:01, sunset 16:53
9h 53m of daylight. Golden hour ends 07:49 and starts 16:04. From the summit you see the sun 06:55 to 16:58.
Nearby summits
Close to Gwaun Cerrig Llwydion
About Gwaun Cerrig Llwydion
Gwaun Cerrig Llwydion is 730 m (2,395 ft) high with 14 m of prominence. It is in Brecon Beacons, Wales. It is the 13th highest of the 36 summits Peakify lists in Brecon Beacons. The nearest summits are Fan y Big (1.1 km), Bwlch y Ddwyallt (1.5 km) and Cribyn (2.4 km).
How high is Gwaun Cerrig Llwydion?
Gwaun Cerrig Llwydion is 730 metres high with 14 metres of prominence.
Where is Gwaun Cerrig Llwydion?
Gwaun Cerrig Llwydion is listed in Brecon Beacons, Wales.
Are there routes for Gwaun Cerrig Llwydion?
Route data is not available for this mountain yet, but the page still shows summit, weather, and location context.
Is it safe to climb Gwaun Cerrig Llwydion today?
Peakify rates each day on the summit Good, Marginal or Poor from the forecast summit wind, gusts, chance of rain and wind chill. Wind of 40 mph or gusts of 65 mph make it Poor; wind of 25 mph, gusts of 45 mph, a 60% chance of rain or a feels-like temperature of -8°C or below make it Marginal. Today's and tomorrow's ratings are at the top of this page. The rating covers the weather only: also check your route, daylight, kit and experience, and in winter whether you need an ice axe and crampons.
What is the weather on Gwaun Cerrig Llwydion tomorrow?
Thursday 29 October: mostly dry, up to 9°C at the summit, feeling as cold as 2°C, summit wind 28 mph gusting 36 mph, 4% chance of rain. Rated Marginal.
What is the weather on Gwaun Cerrig Llwydion this weekend?
Saturday 31 October: fog, up to 7°C at the summit, feeling as cold as -1°C, summit wind 12 mph gusting 15 mph, 0% chance of rain. Rated Good. Sunday 1 November: mostly dry, up to 6°C at the summit, feeling as cold as 0°C, summit wind 22 mph gusting 28 mph, 2% chance of rain. Rated Good.
What weather information is shown for Gwaun Cerrig Llwydion?
The page includes cached mountain forecast context, snow outlook, dark-sky signals, cloud-inversion information, sunrise, sunset, and summit planning details where available.
Peakify is run by Sam Tyler, who has climbed Yr Wyddfa 22 times. The forecast refreshes every hour; how our forecast works.
