Updated on Thu 29 Aug 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.

Storm Name (Named by) Peak Impact Date	Highest sustained / mean wind speed	Highest gust wind speed	Highest 24-hr total rainfall	Air temps range	Lowest MSLP	Highest individual wave
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
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
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
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
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
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

Definitions

• Sustained wind speeds (average (10-minute mean) land-wind speeds) are shaded according to the Beaufort land-wind scale Near Gale Gale Stong Gale Storm Violent Storm Hurricane .
• Peak impact date was based upon the date of highest gust observed during the event.
• Gust refer to average (3-second mean) land-wind speeds, stored in database as knots.
• MSLP refers to hourly mean sea level pressure (hPa).
• Highest Individual Wave (m) was the height from trough to crest.
• All land-observations are daily (00-00 UTC) from the primary (synoptic) national meteorological station network.
• For buoy information, see www.met.ie/forecasts/marine-inland-lakes/buoys/buoy-locations.