Connemara Detailed Forecast for Thu 21 May 2026

Dense overcast conditions will dominate Connemara on Thursday with extensive rain activity. A warm front moving north will bring moderate rain late tonight transitioning to light rain and drizzle through Thursday morning. Rain will become heavier again through the afternoon with the best chance of moderate to heavy falls between 14:00-18:00, particularly across western and northwestern coastal areas. Accumulations of 5-10mm are expected widely with locally higher amounts near exposed coasts. Temperatures will struggle, reaching only 14-17?C in most areas despite the southerly flow. The saturated air mass will keep humidity very high with extensive low cloud, mist and hill fog throughout.

Southerly winds will be fresh to strong and gusty, with speeds of 20-28 kph and gusts to 32-38 kph, strongest along western coastal areas. Winds will ease slightly during the afternoon but remain breezy throughout. Visibility will be poor to very poor with drizzle, mist and hill fog affecting all areas at times. Conditions will remain damp and murky through Thursday night with further light rain or drizzle and extensive low cloud persisting. Cloud bases will remain very low on hills with tops in cloud for most of the day.

00-06: Dense overcast with moderate rain developing, turning to drizzle and light rain by dawn. Fresh southerly winds. Temperatures 11-13?C. Mist and fog patches developing.
07-12: Dense overcast with drizzle and light rain persisting. Light to moderate dew. Fresh to strong southerly winds 20-28 kph. Temperatures rising slowly to 12-14?C. Poor visibility with mist.
13-18: Dense overcast with rain becoming moderate to heavy, especially mid-afternoon. Breezy southerly winds 19-28 kph gusting 31-38 kph. Temperatures reaching 14-17?C. Mist and hill fog.
19-00: Dense overcast becoming cloudy. Rain easing to drizzle and light rain. Southerly winds easing slightly 16-23 kph. Temperatures steady 12-15?C. Mist and fog persisting.

Ballyconneely: Dense overcast with moderate rain late tonight then light rain and drizzle morning. Rain becomes moderate afternoon. High 15?C. Fresh S winds 21 kph gusting 33 kph.
Cashel: Dense overcast with rain developing overnight, drizzle morning, moderate rain afternoon. High 14?C. Breezy SSW winds 19 kph gusting 32 kph. Mist and fog patches.
Cleggan: Dense overcast with moderate rain overnight then drizzle morning. Rain likely afternoon with 5-10mm possible. High 15?C. Breezy S-SSW winds 24 kph gusting 36 kph.
Clifden: Dense overcast with moderate rain overnight becoming drizzle morning. Moderate rain afternoon with 5-10mm. High 16?C. Breezy SSW winds 24 kph gusting 36 kph. Mist and fog.
Glinsce: Dense overcast with moderate rain overnight then drizzle morning. Rain likely afternoon especially 14:00-18:00. High 17?C. Breezy SSW winds 24 kph gusting 38 kph. Heavy dew.
Kylemore: Dense overcast with light rain overnight becoming drizzle morning. Rain likely afternoon. High 15?C. Breezy S-SSW winds 19 kph gusting 31 kph. Mist and fog patches.
Leenane: Dense overcast with moderate rain overnight then light rain and drizzle morning. Rain becoming moderate afternoon. High 16?C. Breezy S winds 24 kph gusting 37

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