18 December 2025 20:55

Tonight - Thursday 18th December

Rather cold tonight with clear spells and scattered heavy showers, mainly affecting Atlantic counties. Some of the showers will be of hail with isolated thunderstorms too. Lowest temperatures of 2 to 6 degrees, in a freshening southwest winds, stronger near coasts.

Tomorrow - Friday 19th December

Friday will bring a mix of spells and scattered showers, mainly affecting Atlantic counties, some of which will be heavy early on. Highest temperatures of 7 to 10 degrees. Moderate to fresh and gusty southwesterly winds, gradually easing through the day, and backing southerly towards evening.

Outlook

Overview: The mobile Atlantic regime will continue to bring unsettled and mixed conditions for the remainder of this week, with further spells of rain, showers, and sunny spells all forecast. However, current indications are that a shift to a more easterly airflow will introduce more settled and drier, but cooler, conditions as we move into next week and towards Christmas.

Friday night: Mostly dry at first apart from a few coastal showers. However, cloud will thicken from the west through the second half of the night, with outbreaks of rain pushing into the south and west towards morning. Lowest temperatures of 4 to 7 degrees, with southerly winds increasing fresh to strong and gusty through the night.

Saturday: A wet and windy start with outbreaks of rain spreading northeastwards across the country, becoming patchier as they do so. A clearance to drier conditions, but still with some showers, will follow in the afternoon. Highest daytime temperatures of 6 to 10 degrees, with moderate to fresh and gusty southeasterly winds veering southwesterly and easing light to moderate with the clearance.

Saturday night: A cold night with long clear spells. It will be dry apart from a few coastal showers. Some frost is possible with lowest temperatures of minus 1 to plus 2 degrees, with a light southerly breeze. Some mist and fog patches are possible too.

Sunday: The detail becomes more uncertain as we move into Sunday, but current indications are that it will be a cooler day with showers, possibly of hail, and more persistent outbreaks of rain moving in from the southeast. Highest daytime temperatures of 3 to 8 degrees, with a light northerly or easterly breeze.

Monday: The detail continues uncertain but further spells of rain and showers are expected. Highest temperatures of 5 to 9 degrees, with a light easterly breeze.

Further outlook: While the detail continues uncertain later into the next week, current indications are for overall drier and more settled conditions to develop.