Storm Floris Weather Warning: Bank Holiday Disruption

If you were looking forward to enjoying the long August bank holiday outdoors in Ireland or the UK, you might want to keep an eye on the sky. A deep low-pressure system—named Storm Floris by the UK Met Office—is on course to bring what Met Éireann calls an “unseasonably impactful” mix of heavy rain and very strong winds from Sunday night into Monday.

Storm name: Floris · Peak impact period: Sunday night to Monday (August 3–4, 2025) · Met Éireann warnings: Status yellow wind and rain for 8 counties · Wind gusts: Very strong and blustery

Here are the key facts about Storm Floris at a glance.

The implication: this isn’t just a routine autumn storm—Floris is arriving during a holiday weekend when many people will be outdoors, camping, or using temporary structures, amplifying the risk.

Where is Storm Floris going to affect?

Expected path across Ireland

Met Éireann says the storm will track to the northwest of Ireland through Sunday night and Monday morning before swinging over Scotland and clearing into the North Sea later on Monday (Met Éireann). The system is expected to deepen rapidly—by approximately 20hPa in 24 hours—as it’s carried toward Ireland by an unusually strong jet stream for this time of year.

Which counties are under warning?

The first yellow wind warning covers Clare, Galway, Mayo and Sligo from 2am to 1pm Monday. A second yellow wind warning covers Cavan, Donegal, Monaghan and Leitrim from 4am to 4pm Monday. A yellow rain warning covers Donegal, Galway, Leitrim, Mayo and Sligo from 2am to 10am Monday (The Irish Times).

How will the UK be affected?

The UK Met Office has issued its own warnings, including a danger to life alert for parts of the UK (The Irish Times). Scotland is expected to see the brunt of the wind and rain as the storm passes overhead on Monday.

The pattern: the westernmost and northernmost counties in Ireland—and later Scotland—bear the highest impact, while eastern areas see less severe conditions.

Is Storm Floris a danger to life?

What does ‘danger to life’ mean?

A “danger to life” warning is the most severe alert level issued by the Met Office. It means flying debris, large waves, and structural damage could cause fatalities. Met Éireann similarly warns of damaging gusts, dangerous driving conditions, structural damage and power outages (The Irish Times).

Which areas face the highest risk?

Counties along the west coast—Galway, Clare, Mayo, and Sligo—are expected to receive the strongest onshore winds and high waves, which could cause wave overtopping in low-lying coastal areas (Met Éireann). The public holiday weekend increases risk because many people will be outdoors or camping and using temporary structures such as tents (Met Éireann).

Safety precautions to take

Met Éireann advises securing any loose outdoor items, staying away from the coast, avoiding unnecessary travel during the peak of the storm, and checking for updated warnings. If you are camping, plan to move to a solid shelter overnight Sunday.

For anyone in a yellow warning zone, the safe choice is to treat the storm seriously and stay indoors from Sunday evening through Monday noon.

Will Storm Floris delay flights?

Airport disruptions in Ireland and UK

Flight delays and cancellations are expected across airports in the affected regions. Met Éireann notes that very strong winds and heavy rain can disrupt both arrivals and departures (Met Éireann). Dublin, Shannon, Galway (regional), and major UK hubs such as Glasgow and Edinburgh may all see knock-on effects.

Advice for travellers on bank holiday

If you have a flight Monday morning, check directly with your airline before heading to the airport. Many airlines issue waivers or allow rebooking when an official weather warning is in place. Allow extra time for ground transport, which may also be affected by road flooding and fallen debris.

Monitoring flight status

Use the official airport websites and carrier apps for real-time updates. The Dublin Airport website provides a live departure board. Given that the storm is expected to clear by Tuesday, most disruption should be confined to Monday.

What was the worst storm to ever hit Ireland?

The Night of the Big Wind (1839)

The most severe storm in Irish history is the Night of the Big Wind, which struck on January 6, 1839. It caused widespread devastation across the island, flattening homes and killing hundreds. Meteorologists estimate it was the strongest recorded storm in Ireland, with sustained hurricane-force winds.

Other notable storms

More recent memorable storms include Hurricane Ophelia (2017), Storm Emma (2018), and Storm Éowyn (2024). Each brought significant damage and loss of life, but none have matched the 1839 event in sheer intensity.

How Storm Floris compares

While Storm Floris is expected to be “unseasonably impactful” according to Met Éireann (Met Éireann), current warnings remain at status yellow—far below the red warnings that would indicate a truly historic storm. The main challenge this weekend is not the storm’s absolute strength, but its timing on a holiday weekend when many people are vulnerable outdoors.

Why this matters: comparing Floris to the 1839 storm puts the current threat in perspective—rare, but nowhere near Ireland’s worst.

Has Ireland ever had a red weather warning?

What is a red warning?

A red weather warning is the highest level issued by Met Éireann. It means a severe weather event is imminent and poses a risk to life and property. During a red warning, the public is advised to stay indoors and avoid all travel.

Previous red warnings in Ireland

Yes, Ireland has issued red warnings several times. Notable examples include Hurricane Ophelia (2017), Storm Emma (2018), and more recently Storm Éowyn (2024). These events caused widespread school and business closures and significant damage.

Why Storm Floris only triggered yellow

While Floris will be disruptive, Met Éireann’s current assessment places it below the threshold for a red warning. The event remains “unseasonable,” but the expected wind speeds and rainfall totals, though significant, are not forecast to reach the extreme levels that trigger red. However, Met Éireann notes there is still uncertainty and the situation could escalate if the storm deepens more than expected (Met Éireann).

The implication is that holidaymakers should remain vigilant despite the lower warning level.

Timeline: How Storm Floris unfolded

• August 2, 2025: Met Office names Storm Floris; Met Éireann issues status yellow warnings for eight counties (The Irish Times)
• August 3, 2025 (Sunday night): Storm arrives; strongest winds overnight, heavy rain (Met Éireann)
• August 4, 2025 (Monday bank holiday): Warnings continue; travel disruption and power cuts possible (Met Éireann)
• August 5, 2025 (Tuesday): Storm clears eastward; conditions improve (Met Éireann)

What’s still unknown & what’s confirmed

Quotes from officials and media

“Storm Floris will bring wet and unseasonably windy weather, particularly for northwestern areas, through Sunday night and into Monday.”

Andrew Doran-Sherlock, Met Éireann forecaster (Met Éireann)

“The public holiday weekend increases risk because many people will be outdoors or camping and using temporary structures such as tents.”

Met Éireann statement (Met Éireann)

“Met Éireann warned of damaging gusts, dangerous driving conditions, structural damage and power outages.”

The Irish Times (The Irish Times)

Storm Floris marks the second named storm of the 2025/26 season and the first to directly threaten the Irish August bank holiday. For holidaymakers in Ireland’s western counties and for those with travel plans to or from the UK, the decision is clear: rearrange outdoor activities for Tuesday, secure your property, and keep a close watch on official updates. The storm will pass, but the disruption—and the risk—are real.

For those planning travel during the Bank Holiday, a comprehensive live storm guide 2025 provides real-time updates on affected routes and safety advice.

Frequently asked questions