Weather 

Met Eireann (latest sea area forecast)

Wind Guru (Bray)

XC Weather (Bray)

Dun Laoghaire Harbour Weather (current conditions)

Met Eireann latest buoy reports

Rainfall radar

Dublin Bay Buoy Twitter feed (updated every 20 minutes)

UK Met Office Synoptic charts

UKMO Bracknell Synoptic Charts (with links at the top of the page for other forecasts)

Earth Wind Map