Holyhead Mountain weather tomorrow, this weekend and 14-day summit forecast

There is no recent summit forecast cached for Holyhead Mountain right now. The main Holyhead Mountain page loads the live forecast when you open it.

Holyhead Mountain weather today, tomorrow and this weekend

There is no recent summit forecast cached for Holyhead Mountain right now. The main Holyhead Mountain page loads the live forecast when you open it. Open the live Holyhead Mountain forecast.

Holyhead Mountain 14-day summit weather forecast

The 14-day table appears here once a recent summit forecast is cached for Holyhead Mountain. Until then, the main Holyhead Mountain page shows the live 14-day forecast.

How the Holyhead Mountain summit forecast is made

The numbers come from the Open-Meteo weather model for the summit's position at 220 m, in the mountain's local time. A valley forecast would understate the summit badly, so the wind is worked out at summit height from the model's upper-air winds: the standard 10 m wind sits over the model's smoothed ground and is roughly half what an exposed top gets.

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. The verdict is the same one shown on the main peak page and in the Peakify app.

"Feels like" is the coldest apparent temperature of the day, which combines air temperature, wind and humidity. On a windy summit it can be well below the air temperature, so pack for that figure, not the high.

For a second opinion before a big day, read the Met Office mountain forecast or MWIS for the area. They are written by forecasters and cover hazards such as cloud on the tops and visibility that a model table can't.

Questions about Holyhead Mountain

What is the Holyhead Mountain weather tomorrow?

There is no recent summit forecast cached for Holyhead Mountain right now. The main Holyhead Mountain page loads the live forecast when you open it.

Is there a 14-day Holyhead Mountain weather forecast?

Yes. This page lists up to 14 days of summit weather for Holyhead Mountain, each with a Good, Marginal or Poor verdict. Days 8 to 14 are less certain: use them to spot a settled or stormy spell, not to plan a day.

Where does the Holyhead Mountain summit forecast come from?

From the Open-Meteo weather model for the summit's position at 220 m, refreshed every few hours. Wind is worked out at summit height from the model's upper-air winds, because the standard 10 m wind is roughly half what a summit gets.