Is it safe to climb Sgurr nan Gillean today and tomorrow?

Today on Sgurr nan Gillean is rated Poor and tomorrow Poor, from the summit forecast. Summit forecast updated 15:13, 28 Oct. The reasons are below, followed by what the rating can't tell you.

Is it safe to climb Sgurr nan Gillean today?

Poor Today Wednesday 28 October

• Wind and gusts: Summit wind up to 44 mph, gusting 55 mph. That is past the Poor line (wind 40 mph or gusts 65 mph), when walking on exposed ground is hard and a fall more likely.
• Rain: 100% chance of rain, about 12.5 mm in all. A 60% chance or more makes the day Marginal on its own: wet rock is slippery and wet kit chills you faster.
• Cloud: Cloud cover averages 98% and humidity 96% at summit height. Air that close to saturation means the top is likely to be in cloud, so plan to navigate by map and compass. The forecast gives no cloud base height; the main peak page estimates one from the valley forecast.
• Temperature and wind chill: Up to 6°C at the summit, down to 3°C, feeling as cold as -5°C in the wind.
• Daylight: Sunrise 07:27, sunset 16:49: 9h 22m of daylight.

Is it safe to climb Sgurr nan Gillean tomorrow?

Poor Tomorrow Thursday 29 October

• Wind and gusts: Summit wind up to 59 mph, gusting 74 mph. That is past the Poor line (wind 40 mph or gusts 65 mph), when walking on exposed ground is hard and a fall more likely.
• Rain: 96% chance of rain, about 0.6 mm in all. A 60% chance or more makes the day Marginal on its own: wet rock is slippery and wet kit chills you faster.
• Cloud: Cloud cover averages 99% and humidity 98% at summit height. Air that close to saturation means the top is likely to be in cloud, so plan to navigate by map and compass. The forecast gives no cloud base height; the main peak page estimates one from the valley forecast.
• Temperature and wind chill: Up to 6°C at the summit, down to 5°C, feeling as cold as -4°C in the wind.
• Daylight: Sunrise 07:29, sunset 16:47: 9h 18m of daylight.

Is it safe to climb Sgurr nan Gillean this weekend?

Marginal Saturday 31 October

• Wind and gusts: Summit wind up to 14 mph, gusting 17 mph. That is under the Marginal line of 25 mph wind or 45 mph gusts.
• Rain: 65% chance of rain, about 0 mm in all. A 60% chance or more makes the day Marginal on its own: wet rock is slippery and wet kit chills you faster.
• Cloud: Cloud cover averages 30% and humidity 93% at summit height. The forecast gives no cloud base height; the main peak page estimates one from the valley forecast.
• Temperature and wind chill: Up to 5°C at the summit, down to -1°C, feeling as cold as -4°C in the wind. Below freezing at the summit, so expect ice on rock and paths, especially early.
• Daylight: Sunrise 07:34, sunset 16:42: 9h 9m of daylight.

Good Sunday 1 November

• Wind and gusts: Summit wind up to 16 mph, gusting 20 mph. That is under the Marginal line of 25 mph wind or 45 mph gusts.
• Rain: 8% chance of rain, about 0 mm in all.
• Cloud: Cloud cover averages 73% and humidity 96% at summit height. Air that close to saturation means the top is likely to be in cloud, so plan to navigate by map and compass. The forecast gives no cloud base height; the main peak page estimates one from the valley forecast.
• Temperature and wind chill: Up to 5°C at the summit, down to -1°C, feeling as cold as -4°C in the wind. Below freezing at the summit, so expect ice on rock and paths, especially early.
• Daylight: Sunrise 07:36, sunset 16:40: 9h 4m of daylight.

Weekend forecasts firm up during the week; check again the day before.

What the verdict covers, and what it doesn't

Peakify rates each day 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. That is all it measures: the weather forecast at the summit.

It does not know your fitness or experience, whether you can navigate in cloud with a map and compass, or what you are carrying. It does not see the state of the path, river levels, snow and ice already on the ground, or how the forecast is changing during the day. A Good day can still go wrong if you start late, turn an ankle or lose the path in mist, and a Marginal day can be fine for an experienced party on the easiest route.

On any day, carry waterproofs, warm layers, a hat and gloves, food, water, a head torch and a charged phone, and know how you would navigate if the top is in cloud. Tell someone your route and when you expect to be down. In winter conditions you need an ice axe and crampons and the skill to use them, or a guide.

In an emergency

Call 999, ask for the police and then mountain rescue. Mountain rescue teams in the UK are volunteers called out through the police. Give your location (a grid reference from a map or phone app if you can), what has happened, how many are in your group and your phone number, then keep the phone free. If you have no signal, try to move to higher ground or text 999; you need to have registered your phone with the emergencySMS service before for a text to work.

Questions about Sgurr nan Gillean

Is it safe to climb Sgurr nan Gillean today?

Today, Wednesday 28 October: moderate rain, up to 6°C at the summit, feeling as cold as -5°C, summit wind 44 mph gusting 55 mph, 100% chance of rain. Rated Poor. The rating covers the summit weather only; your route, kit and experience matter as much.

Is it safe to climb Sgurr nan Gillean tomorrow?

Tomorrow, Thursday 29 October: light drizzle, up to 6°C at the summit, feeling as cold as -4°C, summit wind 59 mph gusting 74 mph, 96% chance of rain. Rated Poor.

How does Peakify decide whether Sgurr nan Gillean is safe to climb?

Peakify rates each day 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. It does not judge your fitness, kit, navigation or the state of the path.

Who do I call in an emergency on Sgurr nan Gillean?

Call 999, ask for the police and then mountain rescue. Give your location (a grid reference if you can), what happened and how many are in your group. Stay with the casualty and keep them warm.