Routes up
Gwaun y Llwyni routes: 1 way to the top
Cwm Cywarch mountain pathsHiking · 4.4 km one way · 590 m ascent · ~1h 50m · from Cwm Cywarch signed walkers' car parkHard
Summit today
Is it safe to climb Gwaun y Llwyni today?
Gwaun y Llwyni today (updated 06:34, 28 Oct): up to 9°C at the summit, feeling as cold as 1°C, summit wind 43 mph gusting 54 mph, 100% chance of rain. A poor day for the hills. Best day this week: Saturday, summit gusts 14 mph.
Gwaun y Llwyni weather today
Slight rain, up to 9°C at the summit, feeling as cold as 1°C, summit wind 43 mph gusting 54 mph, 100% chance of rain. Rated Poor.
Gwaun y Llwyni weather tomorrow
Thursday 29 October: mostly dry, up to 9°C at the summit, feeling as cold as 2°C, summit wind 30 mph gusting 37 mph, 14% chance of rain. Rated Marginal.
Gwaun y Llwyni weather this weekend
Saturday 31 October: fog, up to 8°C at the summit, feeling as cold as -2°C, summit wind 11 mph gusting 14 mph, 0% chance of rain. Rated Good.
Sunday 1 November: fog, up to 6°C at the summit, feeling as cold as -3°C, summit wind 21 mph gusting 26 mph, 2% chance of rain. Rated Good.
Gwaun y Llwyni summit forecast, next 7 days
| Day | Verdict | High/low | Feels like | Wind/gust mph | Rain or snow |
|---|
| TodaySlight rain | Poor | 9°/6° | 1° | 43/54 | 100% |
|---|
| TomorrowModerate drizzle | Marginal | 9°/7° | 2° | 30/37 | 14% |
|---|
| Fri 30Overcast | Marginal | 10°/5° | 2° | 30/38 | 2% |
|---|
| Sat 31Fog | Good | 8°/0° | -2° | 11/14 | 0% |
|---|
| Sun 1Fog | Good | 6°/-1° | -3° | 21/26 | 2% |
|---|
| Mon 2Overcast | Good | 6°/3° | -1° | 20/25 | 2% |
|---|
| Tue 3Overcast | Good | 7°/0° | -3° | 20/25 | 0% |
|---|
Gwaun y Llwyni 14-day weather forecast: days 8 to 14, less certain
| Day | Verdict | High/low | Feels like | Wind/gust mph | Rain or snow |
|---|
| Wed 4Fog | Good | 7°/2° | 0° | 11/29 | 2% |
|---|
| Thu 5Fog | Good | 7°/3° | -2° | 11/36 | 6% |
|---|
| Fri 6Fog | Good | 6°/2° | -2° | 14/33 | 6% |
|---|
| Sat 7Fog | Good | 3°/1° | -3° | 14/21 | 17% |
|---|
| Sun 8Light drizzle | Good | 9°/2° | 0° | 13/23 | 20% |
|---|
| Mon 9Light drizzle | Good | 10°/8° | 5° | 9/37 | 27% |
|---|
| Tue 10Slight rain showers | Good | 11°/4° | 1° | 17/40 | 33% |
|---|
Cloud inversion · 7 days
The chance of standing above a sea of cloud on Gwaun y Llwyni each morning this week, from overnight temperature, humidity and low cloud below the 686m summit.
Dark sky · 7 days
How dark the sky gets over Gwaun y Llwyni 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 07:04, sunset 16:52
9h 48m of daylight. Golden hour ends 07:54 and starts 16:01. From the summit you see the sun 06:58 to 16:57.
Nearby summits
Close to Gwaun y Llwyni
About Gwaun y Llwyni
Gwaun y Llwyni is 686 m (2,249 ft) high with 43 m of prominence. It is in Snowdonia, Wales. It is the 73rd highest of the 152 summits Peakify lists in Snowdonia. The nearest summits are Waun Camddwr (1.0 km), Aran Fawddwy (2.0 km) and Pen yr Allt Uchaf (1.6 km).
How high is Gwaun y Llwyni?
Gwaun y Llwyni is 686 metres high with 43 metres of prominence.
Where is Gwaun y Llwyni?
Gwaun y Llwyni is listed in Snowdonia, Wales.
Are there routes for Gwaun y Llwyni?
Peakify lists 1 route for Gwaun y Llwyni, including available distance, ascent, start point, and difficulty details.
Is it safe to climb Gwaun y Llwyni 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 y Llwyni tomorrow?
Thursday 29 October: mostly dry, up to 9°C at the summit, feeling as cold as 2°C, summit wind 30 mph gusting 37 mph, 14% chance of rain. Rated Marginal.
What is the weather on Gwaun y Llwyni this weekend?
Saturday 31 October: fog, up to 8°C at the summit, feeling as cold as -2°C, summit wind 11 mph gusting 14 mph, 0% chance of rain. Rated Good. Sunday 1 November: fog, up to 6°C at the summit, feeling as cold as -3°C, summit wind 21 mph gusting 26 mph, 2% chance of rain. Rated Good.
What weather information is shown for Gwaun y Llwyni?
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.
