Storm Floris to bring wet, windy end to otherwise mild August bank holiday weekend

Those attending the All Together Now festival at Curraghmore Estate in Co. Waterford can expect three days of mild weather. Photo: Joe Evans

The weather will be largely dry this August bank holiday weekend, though Monday is expected to be wet and “unseasonably windy” as Storm Floris impacts the country.

Those attending the All Together Now festival at Curraghmore Estate in Co. Waterford can expect three days of mild weather and relatively high temperatures before conditions deteriorate on Monday.

Storm Floris warning

On Friday afternoon, Met Éireann issued a weather advisory ahead of Storm Floris, which it says will bring “unseasonably impactful weather” from Sunday night into Monday.

The forecaster describes the storm as a “deepening low-pressure system” likely to track to the northwest, bringing a spell of “heavy rain and very strong winds.” 

The storm is expected to cause:

• Dangerous travel conditions 
• Fallen trees, debris, and loose objects 
• Structural damage 
• Knock-on impacts for outdoor events 
• Power outages 
• Wave overtopping 
• Localised flooding due to leaves and debris

Met Éireann said additional updates would be issued on Saturday.

Forecaster Andrew Doran-Sherlock noted that the full impacts of Storm Floris cannot yet be fully determined.

"By Saturday though, the event will be within the range of our high-resolution DINI forecasting model and warnings will be issued," he said.

"As this is a public holiday weekend with a large number of outdoor events and with many people going camping, etc, and with an increased usage of temporary structures such as tents, more people will be at a greater risk of exposure than would normally be the case."

Mr Doran-Sherlock added that while neap tides will bring the lowest tidal ranges of the cycle on Sunday and Monday, strong onshore winds and high waves may cause wave overtopping in low-lying coastal areas of the northwest and west.

"Our advice would be to pay attention to the weather forecasts and warnings issued over the weekend and take them into consideration with any plans you have. And as always, please heed the advice of local authorities," he added.

Current outlook

As for the general outlook for the next few days, Met Éireann says Friday will become gradually drier and sunnier as the afternoon progresses, with highest temperatures on Friday ranging from 16C to 21C, warmest in the south.

Mostly cloudy this morning with some limited sunny spells & isolated light showers feeding into the north🌥️

Better sunny spells will develop through the afternoon & evening as the showers die away🌦️

Highs of 16 to 21 C, warmest in the south, in a light northwesterly breeze🍃 pic.twitter.com/6UTKaDjG2U

— Met Éireann (@MetEireann) August 1, 2025

It will remain dry and clear overnight, though some cloud will build in the west later. Temperatures will fall to around 8C to 13C in a light and variable breeze.

Saturday will start dry and sunny, before cloud gradually spreads from the west through late morning and early afternoon, bringing patches of light rain, drizzle, and mist. Top temperatures will range from 16C to 21C in a light southwesterly breeze.

Saturday night will see some outbreaks of light rain and drizzle, with more persistent rain spreading across the country overnight. By early Sunday morning, clear spells will develop in the north and west, Met Éireann says. Temperatures will range from 13C to 17C.

On Sunday, the forecaster says early morning cloud and rain will clear from the southwest, giving way to the best conditions of the weekend, with "a good amount of dry and bright weather, with just a few showers in the northwest." 

Highest temperatures will range from 16C to 20C in a moderate to fresh westerly wind.

By Sunday night, conditions will turn wet and windy, as rain and fresh, gusty winds move across the country from the west. Temperatures will range from 12C to 15C.

Finally, Met Éireann says Monday will be "wet and windy", with strong, gusty westerly winds and "widespread rain, possibly heaviest over parts of the northwest, clearing eastwards through the morning and afternoon."

Sunny spells and scattered showers will follow, as winds gradually ease through the day. Highest temperatures on Monday will range from 16C to 21C.