Corn Du weather forecast

872 m · 2,859 ft · Prominence 28 m · 2 routes
6°
Marginal

Summit wind 37 mph, gusts 47 mph, 2% chance of rain.

Next 48 hours · summitNow

Routes up

Corn Du routes: 2 ways to the top

Summit today

Is it safe to climb Corn Du today?

Corn Du today (updated 03:11, 28 Oct): up to 8°C at the summit, feeling as cold as -1°C, summit wind 41 mph gusting 51 mph, 75% chance of rain. A poor day for the hills. Best day this week: Saturday, summit gusts 19 mph.

Corn Du weather today

Dense drizzle, up to 8°C at the summit, feeling as cold as -1°C, summit wind 41 mph gusting 51 mph, 75% chance of rain. Rated Poor.

Corn Du weather tomorrow

Thursday 29 October: mostly dry, up to 8°C at the summit, feeling as cold as 2°C, summit wind 37 mph gusting 46 mph, 0% chance of rain. Rated Marginal.

Corn Du weather this weekend

Saturday 31 October: fog, up to 5°C at the summit, feeling as cold as -2°C, summit wind 15 mph gusting 19 mph, 0% chance of rain. Rated Good.

Sunday 1 November: mostly dry, up to 4°C at the summit, feeling as cold as -1°C, summit wind 33 mph gusting 41 mph, 0% chance of rain. Rated Marginal.

Corn Du summit forecast, next 7 days

DayVerdictHigh/lowFeels likeWind/gust mphRain or snow
TodayDense drizzlePoor8°/4°-1°41/5175%
TomorrowLight drizzleMarginal8°/5°2°37/460%
Fri 30FogMarginal9°/1°-1°37/460%
Sat 31FogGood5°/1°-2°15/190%
Sun 1Light drizzleMarginal4°/1°-1°33/410%
Mon 2Light drizzleMarginal5°/2°-2°31/394%
Tue 3OvercastMarginal6°/2°-2°28/362%
Corn Du 14-day weather forecast: days 8 to 14, less certain
DayVerdictHigh/lowFeels likeWind/gust mphRain or snow
Wed 4FogGood6°/3°0°18/234%
Thu 5OvercastGood5°/3°0°18/232%
Fri 6OvercastGood5°/2°-1°21/278%
Sat 7FogGood5°/1°-1°20/259%
Sun 8FogGood4°/-1°-3°16/2013%
Mon 9FogGood4°/-3°-5°20/2518%
Tue 10FogGood3°/-3°-6°20/2625%

Cloud inversion · 7 days

The chance of standing above a sea of cloud on Corn Du each morning this week, from overnight temperature, humidity and low cloud below the 872m summit.

Dark sky · 7 days

How dark the sky gets over Corn Du 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 07:50 and starts 16:04. From the summit you see the sun 06:55 to 16:59.

About Corn Du

Corn Du sits beside Pen y Fan at the heart of the Brecon Beacons. It reaches 872m (2861ft) and is a Nuttall. With 28m of prominence it is a top of Pen y Fan (886m), which is 0.6km to the north-east. Craig Gwaun Taf (826m) is 0.6km to the south and Cribyn (795m) 1.7km to the east.

The most popular route starts at Pont ar Daf on the Brecon to Merthyr road and follows a wide, pitched path up the slopes to the col below Corn Du. From there you climb a short, steep section to the summit. A second route starts at the Storey Arms and climbs past the Tommy Jones obelisk below the north face.

The summit plateau has the flat, layered sandstone cap typical of the Beacons. The north face drops into Cwm Llwch, so take care near the edge.

Corn Du is 872 m (2,859 ft) high with 28 m of prominence. It is in Brecon Beacons, Wales. It is the 2nd highest of the 36 summits Peakify lists in Brecon Beacons. The nearest summits are Craig Gwaun Taf (0.6 km), Pen y Fan (0.6 km) and Cribyn (1.7 km).

Can you climb Corn Du and Pen y Fan together?

Yes. Pen y Fan is 0.6km to the north-east, and almost everyone climbs the two together.

What is the easiest way up Corn Du?

The pitched path from Pont ar Daf on the Brecon to Merthyr road is the most direct and popular route.

Is Corn Du suitable for beginners?

Yes, in good weather. The paths are clear and well made, though the final section is steep.

What is the Tommy Jones obelisk?

It is a memorial below Corn Du on the north side, on the route from the Storey Arms.

How high is Corn Du?

Corn Du is 872 metres high with 28 metres of prominence.

Where is Corn Du?

Corn Du is listed in Brecon Beacons, Wales.

Are there routes for Corn Du?

Peakify lists 2 routes for Corn Du, including available distance, ascent, start point, and difficulty details. The easiest is Pont ar Daf (2.7 km one way, Moderate).

Is it safe to climb Corn Du 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 Corn Du tomorrow?

Thursday 29 October: mostly dry, up to 8°C at the summit, feeling as cold as 2°C, summit wind 37 mph gusting 46 mph, 0% chance of rain. Rated Marginal.

What is the weather on Corn Du this weekend?

Saturday 31 October: fog, up to 5°C at the summit, feeling as cold as -2°C, summit wind 15 mph gusting 19 mph, 0% chance of rain. Rated Good. Sunday 1 November: mostly dry, up to 4°C at the summit, feeling as cold as -1°C, summit wind 33 mph gusting 41 mph, 0% chance of rain. Rated Marginal.

What weather information is shown for Corn Du?

The page includes cached mountain forecast context, snow outlook, dark-sky signals, cloud-inversion information, sunrise, sunset, and summit planning details where available.

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