North Wales solar eclipse weather forecast for Wednesday

Across the region, forecasters agree it will be dry and mostly sunny, but high-level cloud is expected to make skies a little hazy at times.

That haze is the main risk for eclipse-watchers, since thin high cloud can dull or soften the view of the Sun even without blocking it completely.

For the mountains specifically, the MWIS Eryri/Snowdonia forecast for Wednesday says cloud on the hills is little if any, with an almost certain chance of cloud-free summits, and describes conditions as extensive sunshine with good visibility although a haze.

Wrexham and Flintshire's Met Office forecast echoes this, noting just a little wispy high cloud at times rather than any thick cloud cover.

Given the eclipse's low position in the west-northwest sky around 13° above the horizon at maximum, the main practical concern isn't cloud overhead but any haze or low cloud sitting along that horizon.

Conditions across Llandudno, Conwy, Wrexham and Eryri/Snowdonia all point the same way: dry, warm, largely clear, with only wispy high cloud or haze as the caveat, so North Wales looks like one of the better-placed parts of the UK for catching Wednesday's eclipse.

For context, this is a deep partial solar eclipse taking place across the UK on Wednesday, August 12 2026, with everywhere in the country seeing at least 89% of the Sun's disc covered by the Moon.

Because the Sun will be relatively low in the sky and partially obscured rather than fully blotted out, it won't get dark, but there should be a noticeable dimming and a distinctive crescent-shaped Sun visible through proper solar filters.

Wide UK-wide cloud-risk estimates put nationwide clear-sky odds at only around 45% given how changeable August evenings can be, which makes North Wales's more settled outlook particularly favourable this time.