Cadair Idris (Gwynedd) weather

Headline:

Largely fine today, but windier tomorrow with some rain possible.

Today:

After a chilly start, it will be a fine morning with sunny periods. Isolated showers in the northwest. Gradually turning somewhat cloudier from the west through this afternoon, but skies staying mostly bright. Southerly winds freshening in the west later. Maximum temperature 17 °C.

Tonight:

Turning windier overnight, particularly in coastal areas in the west. Cloud also thickening with rain developing, possibly heavy towards the north and west. Much milder for all than last night. Minimum temperature 12 °C.

Sunday:

A windy day with strong to gale force winds, particularly on southern and western coasts. Generally cloudy with rain at times, but a few brighter intervals, mainly in the east. Maximum temperature 19 °C.

Outlook for Monday to Wednesday:

Sunny spells and isolated showers on Monday. Changeable on Tuesday with heavier showers for a time. More persistent rain on Wednesday, and turning very windy with gales. Temperatures above average.

Updated: 05:00 (UTC+1) on Sat 23 Sep 2023

Changeable at first with a moist west to southwesterly wind and a mixture of showers, longer spells of rain, and drier interludes. This pattern could also be accompanied by periods of strong winds across western and northern areas, with often calmer weather further south and east. There is a small chance of more widespread settled conditions developing. As we then head through the first half of October, this most likely changeable pattern may gradually give way to more prolonged settled spells, with rain and strong winds more likely to become increasingly confined to the far northwest. Temperatures are likely to be warmer than average overall, but in more settled spells given the time of year there is scope for chilly nights and areas of early morning mist and fog.

Updated: 15:00 (UTC+1) on Fri 22 Sep 2023

A continuation of the gradually increasing chance of more prolonged settled spells until around mid-month, particularly in the the SE, at which point there are signs of a change of type. A north/south split looks increasingly probable with it being drier than average in the north and wetter than average in the south. Above average temperatures are more likely than below overall, though in any settled spells some chilly nights and morning fog patches will continue to occur.

Updated: 16:00 (UTC+1) on Fri 22 Sep 2023