ESB crews have restored power to most of those affected by cuts across the south after lightning damaged power lines.
Around 7,000 thousand homes were left without power for a time but most have been reconnected.
Areas affected included Bandon, Co Cork and Shillelagh, Co Wicklow.
Elsewhere, ferries have been cancelled and gardaí have issued warnings to motorists in some areas due to adverse weather conditions.
Irish Ferries announced the cancellation of all Swift sailings because of stormy weather.
Intending passengers are advised to check the Irish Ferries website.
Tomorrow's sailing by the Isle of Man Steam Packet Company to Douglas has been cancelled.
AA Roadwatch has advised motorists to take particular care in Counties Wexford, Wicklow, Cork, Kerry and Waterford after Met Éireann warned of strong blustery winds.
Motorists are being advised generally to take extra care due to excess surface water and fallen debris.
Clonmel lightning strike
This footage of lightning striking St Mary's Church in Clonmel last night was filmed by Jonathan Ryan.