Here are two images for observing cloud conditions for astronomical viewing in Ireland and Great Britain. The first is an IR (infrared) satellite image, while the second is a visible light Satellite image. If you refresh the page it will give you the latest image (updated every 30 minutes of so). If you click on the image you can see an animation of current conditions via www.sat24.com

Infra Red image of Ireland and the UK

Visible Satelite Image of Ireland and the UK

Click for rainfall