Page last updated Mon 1 Sep 2025

Aiden observed storm force winds

There were six named storms during the 2020/21 storm season, which ran from Tuesday 1 September 2020 to Tuesday 31 August 2021 (inclusive). The 2020/21 storm season was quieter than 2019/20 but still produced a mix of storms during holiday events (Halloween and St. Stephen's Day).

It began with Alex in early October, with heavy rain in County Wicklow (73 mm) and 10.7 m waves off County Donegal, though winds stayed in the gale range. By Halloween, storm force Aiden was gusting 130 km/h. On St. Stephen’s Day, Bella brought gusts to 122 km/h at Mace Head, a deep 961 hPa low at Malin Head and a huge 20 m wave out at buoy M6 in the deep Atlantic.

In January, Christoph was more about cold air and rain than extreme wind for Ireland, with near-gale force winds and almost 10 m waves recorded off County Donegal. Then in early February, Darcy brought a short burst of cold easterly gales, gusts of 83 km/h and waves above 12 m in the deep Atlantic. In July, Evert appeared as a summer storm, producing strong breeze conditions at the coast but heavy rainfall in County Waterford (46 mm).

Name (Named by) Peak Impact Date		Highest sustained wind speed (km/h)	Highest gust wind speed (km/h)	Highest daily rainfall total (mm)	Daily air temperatures (°C)	Lowest mean sea level pressure (hPa)	Highest individual wave (m)
-	Alex (Météo France) Sun 4 Oct 2020	Gale Force 74 km/h (40 knots | 46 mph) Roches Point (coastal), Co Cork around 2pm	100 km/h (54 knots | 62 mph) Roches Point (coastal), Co Cork at 1:46pm	73.1 mm M.duff Hill, Co Wicklow	3.3°C at Carrickmacross, Co Monaghan to 16.8°C at 2 stations in Cork and Mayo	983.0 hPa Dublin Airport, Co Dublin around 9am and 10am and Sun 4th	10.7 m Buoy M4 (off Donegal coast) around 5pm
A	AIDEN (Met Éireann) Sat 31 Oct 2020	Storm Force 98 km/h (53 knots | 61 mph) Malin Head (coastal), Co Donegal around noon	130 km/h (70 knots | 81 mph) Malin Head (coastal), Co Donegal at 12:57am	33.5 mm Glencar (Dreenagh), Co Kerry	2.3°C at Carrickmacross, Co Monaghan to 16.2°C at Merrion Square, Co Dublin	978.7 hPa Belmullet (coastal), Co Mayo around 6am	12.8 m Buoy M3 (off Cork coast) around 11am
B	BELLA (Met Office) Sat 26 Dec 2020	Gale Force 85 km/h (46 knots | 53 mph) Mace Head (coastal), Co Galway around 2am and 7pm	122 km/h (66 knots | 76 mph) Mace Head (coastal), Co Galway at 9:23pm	59.5 mm Maam Valley, Co Galway	-0.4°C at Ballincurrig (Peafield), Co Cork to 12.0°C at 2 stations in Clare and Cork	961.2 hPa Malin Head (coastal), Co Donegal around 10pm Sun 27th	20.0 m Buoy M6 (in the deep Atlantic) around 3am
C	Christoph (Met Office) Thu 21 Jan 2021	Near Gale 56 km/h (30 knots | 35 mph) Malin Head (coastal), Co Donegal around 6am	78 km/h (42 knots | 48 mph) Malin Head (coastal), Co Donegal at 6:35am	13.2 mm Creeslough (Brockagh), Co Donegal and Gweedore Weir, Co Donegal Fri 22nd and Fri 22nd	-3.8°C at Carrickmacross, Co Monaghan to 10.0°C at Dooks, Co Kerry	973.8 hPa Malin Head (coastal), Co Donegal around 3am	9.8 m Buoy M4 (off Donegal coast) around 6am Fri
D	Darcy (KNMI) Sun 7 Feb 2021	Gale Force 69 km/h (37 knots | 43 mph) Malin Head (coastal), Co Donegal around 3am	83 km/h (45 knots | 52 mph) Malin Head (coastal), Co Donegal at 3:26am	9.5 mm Coomclogh, Co Cork	-1.6°C at Gurteen, Co Tipperary to 9.5°C at Glengarriff (Ilnacullin), Co Cork	1002.1 hPa Sherkin Island (coastal), Co Cork around 0am Tue 9th	12.1 m Buoy M6 (in the deep Atlantic) around 11pm Mon
E	Evert (Met Office) Fri 30 Jul 2021	Strong Breeze 46 km/h (25 knots | 29 mph) Roches Point (coastal), Co Cork and Malin Head, Co Donegal around 1pm and 3am and Thu 29th	57 km/h (31 knots | 36 mph) Roches Point (coastal), Co Cork and Malin Head, Co Donegal at 1:58pm and 2:25am and Thu 29th	46.0 mm Crohaun Hill (Commeragh Mountains), Co Waterford Thu 29th	8.4°C at Horseleap, Co Offaly to 21.8°C at Glengarriff (Ilnacullin), Co Cork	1001.8 hPa Malin Head (coastal), Co Donegal around 1am Thu 29th	6.2 m Buoy M5 (off south Wexford coast) around 3am