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Updated on Wednesday 20 March 2024

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 named storms were Aiden, Bella, Christoph, Darcy and Evert.

Sustained wind speeds are shaded according to the Beaufort land-wind scale as follows:
Near Gale Gale Stong Gale Storm Violent Storm Hurricane

Storm Name
Peak Impact Date
Named By		 Highest sustained / mean wind speed Highest gust wind speed Highest 24-hr total rainfall Air temps range Lowest MSLP Highest individual wave
Alex
Sun 4 Oct 2020
Meteo France		 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
AIDEN
Sat 31 Oct 2020
Met Éireann		 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
BELLA
Sat 26 Dec 2020
Met Office		 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
Christoph
Thu 21 Jan 2021
Met Office		 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
Darcy
Sun 7 Feb 2021
KNMI		 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
Evert
Fri 30 Jul 2021
Met Office		 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

Definitions

  • Peak impact date was based upon the date of highest gust observed during the event.
  • Sustained refers to average (10-minute mean) land-wind speeds, stored in database as knots.
  • Gust refers to average (3-second mean) land-wind speeds, stored in database as knots.
  • Rainfall refers to rainfall total measured over 24 hours (mm).
  • MSLP refers to hourly mean sea level pressure (hPa).
  • Highest Individual Wave (m) was the height from trough to crest.

    • For buoy location information, see www.met.ie/forecasts/marine-inland-lakes/buoys/buoy-locations.