Routes up
Pen y Castell routes: 2 ways to the top
Bwlch y Ddeufaen and Drum ridgeHiking · 6.2 km one way · 400 m ascent · ~1h 55m · from Bwlch y Ddeufaen track junctionHard
Cwm Eigiau and northern uplandsHiking · 8.4 km one way · 350 m ascent · ~2h 15m · from Pen y Gaer hillfort car parkHard
Summit today
Is it safe to climb Pen y Castell today?
Pen y Castell today (updated 19:51, 27 Oct): up to 9°C at the summit, feeling as cold as 1°C, summit wind 41 mph gusting 51 mph, 100% chance of rain. A poor day for the hills. Best day this week: Saturday, summit gusts 8 mph.
Pen y Castell weather today
Slight rain, up to 9°C at the summit, feeling as cold as 1°C, summit wind 41 mph gusting 51 mph, 100% chance of rain. Rated Poor.
Pen y Castell weather tomorrow
Thursday 29 October: mostly dry, up to 10°C at the summit, feeling as cold as 3°C, summit wind 26 mph gusting 33 mph, 0% chance of rain. Rated Marginal.
Pen y Castell weather this weekend
Saturday 31 October: fog, up to 11°C at the summit, feeling as cold as -2°C, summit wind 5 mph gusting 8 mph, 8% chance of rain. Rated Good.
Sunday 1 November: fog, up to 7°C at the summit, feeling as cold as -4°C, summit wind 17 mph gusting 21 mph, 5% chance of rain. Rated Good.
Pen y Castell summit forecast, next 7 days
| Day | Verdict | High/low | Feels like | Wind/gust mph | Rain or snow |
|---|
| TodaySlight rain | Poor | 9°/6° | 1° | 41/51 | 100% |
|---|
| TomorrowLight drizzle | Marginal | 10°/6° | 3° | 26/33 | 0% |
|---|
| Fri 30Overcast | Marginal | 11°/5° | 3° | 28/36 | 7% |
|---|
| Sat 31Fog | Good | 11°/-1° | -2° | 5/8 | 8% |
|---|
| Sun 1Fog | Good | 7°/-1° | -4° | 17/21 | 5% |
|---|
| Mon 2Overcast | Good | 8°/1° | -2° | 18/23 | 6% |
|---|
| Tue 3Fog | Good | 9°/1° | -2° | 8/13 | 0% |
|---|
Pen y Castell 14-day weather forecast: days 8 to 13, less certain
| Day | Verdict | High/low | Feels like | Wind/gust mph | Rain or snow |
|---|
| Wed 4Fog | Good | 8°/0° | -1° | 8/11 | 0% |
|---|
| Thu 5Fog | Good | 7°/1° | 0° | 10/13 | 2% |
|---|
| Fri 6Overcast | Good | 6°/1° | -1° | 10/17 | 10% |
|---|
| Sat 7Fog | Good | 7°/0° | -2° | 18/23 | 18% |
|---|
| Sun 8Fog | Good | 7°/0° | -2° | 18/22 | 24% |
|---|
| Mon 9Fog | Good | 7°/0° | -4° | 15/18 | 29% |
|---|
Cloud inversion · 7 days
The chance of standing above a sea of cloud on Pen y Castell each morning this week, from overnight temperature, humidity and low cloud below the 624m summit.
Dark sky · 7 days
How dark the sky gets over Pen y Castell 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 07:06, sunset 16:52
9h 46m of daylight. Golden hour ends 07:57 and starts 16:00. From the summit you see the sun 07:01 to 16:57.
Nearby summits
Close to Pen y Castell
About Pen y Castell
Pen y Castell is 624 m (2,046 ft) high with 29 m of prominence. It is in Snowdonia, Wales. It is the 118th highest of the 152 summits Peakify lists in Snowdonia. The nearest summits are Drum (1.5 km), Carnedd y Ddelw (2.1 km) and Foel Lwyd (3.4 km).
How high is Pen y Castell?
Pen y Castell is 624 metres high with 29 metres of prominence.
Where is Pen y Castell?
Pen y Castell is listed in Snowdonia, Wales.
Are there routes for Pen y Castell?
Peakify lists 2 routes for Pen y Castell, including available distance, ascent, start point, and difficulty details. The easiest is Bwlch y Ddeufaen and Drum ridge (6.2 km one way, Hard).
Is it safe to climb Pen y Castell 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 Pen y Castell tomorrow?
Thursday 29 October: mostly dry, up to 10°C at the summit, feeling as cold as 3°C, summit wind 26 mph gusting 33 mph, 0% chance of rain. Rated Marginal.
What is the weather on Pen y Castell this weekend?
Saturday 31 October: fog, up to 11°C at the summit, feeling as cold as -2°C, summit wind 5 mph gusting 8 mph, 8% chance of rain. Rated Good. Sunday 1 November: fog, up to 7°C at the summit, feeling as cold as -4°C, summit wind 17 mph gusting 21 mph, 5% chance of rain. Rated Good.
What weather information is shown for Pen y Castell?
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.
