Compare the mountain weather on Yr Wyddfa, Cadair Idris and Pen y Fan before choosing a day for the Welsh Three Peaks.
Every summit is shown side by side. The combined grade gives extra weight to the weakest forecast.
A poor day on the tops of Snowdon - Yr Wyddfa, with the summit in cloud for most of the day and a blustery wind.
A mixed day on Cadair Idris - Penygadair, with a blustery wind.
A good day on Pen y Fan, though expect cloud coming and going on the summit.
Weather data: Open-Meteo (CC BY 4.0). Adapted by Mountain Weather.
Moon information is unavailable for this night at this summit. An earlier night may no longer be in the current forecast.
Moon information is unavailable for this night at this summit. An earlier night may no longer be in the current forecast.
Moon information is unavailable for this night at this summit. An earlier night may no longer be in the current forecast.
Waxing crescent moon
Moon up during darker hours17:00 GMT to 19:55 GMT
Window: 14 Nov, 17:00 GMT to 15 Nov, 08:00 GMT
Waxing crescent moon
Moon up during darker hours17:00 GMT to 20:00 GMT
Window: 14 Nov, 17:00 GMT to 15 Nov, 08:00 GMT
Waxing crescent moon
Moon up during darker hours17:00 GMT to 20:00 GMT
Window: 14 Nov, 17:00 GMT to 15 Nov, 08:00 GMT
Approximate times in UK local time, for an open horizon. Moon-up periods are rounded to five minutes. Hills and cloud can hide the Moon. Illumination is the sunlit percentage of its disc, not how bright your route will be. Darker hours here begin after civil twilight. This almanac covers only the stated overnight window and does not change the weather grade. Take a headtorch and spare power regardless.
The Welsh Three Peaks Challenge links three iconic mountains across north, mid and south Wales. Because the summits are widely separated, the forecast can vary far more than a single Wales-wide weather summary suggests.
Treat the combined grade as a quick comparison, then read each mountain row. A good forecast on one summit does not imply similar wind, cloud or rain on the other two.
Read Welsh Three Peaks route information