UK weather: Spring sunshine forecast to bring the warmest day of the year

UK weather: Spring sunshine forecast to bring the warmest day of the year

Parts of the UK are set to enjoy some of the warmest temperatures so far in 2026, with spring sunshine pushing highs up to 19°C in certain areas. This Thursday is expected to surpass the previous maximum recorded last February at Kew Gardens in London, which reached 18.7°C. However, this mild spell will be short-lived, as a significant drop in temperatures is forecast for Friday, accompanied by an increase in cloud cover and rain moving in from the northwest.

Conditions on Thursday will be particularly pleasant across much of England and Wales, where sunny skies and a southerly breeze bringing warmth from Europe will raise temperatures quickly. South-east England stands to see the highest levels of warmth with temperatures potentially exceeding 19°C. In contrast, areas closer to the western coasts will remain cooler, generally experiencing temperatures around 16 to 17°C. Scotland and Northern Ireland, meanwhile, will face the arrival of a weather front bringing cloud and rain beginning on Thursday and spreading into western England and Wales later in the day, keeping temperatures in these regions down to between 10 and 13°C.

The rain and cloud associated with this front will advance further south by Friday, resulting in much cooler conditions for most of England and Wales, where maximum temperatures will fall to around 8-11°C, with only the far south-east seeing temperatures near 14°C depending on sunshine. Conversely, Scotland and Northern Ireland are likely to experience a sunnier day, despite cooler air following overnight frost, with little change in temperature. The weekend is expected to brighten up again, with higher temperatures across most parts of the UK and dry weather prevailing until late Sunday.

While many will appreciate the early season warmth, those sensitive to tree pollen may find relief elusive. Hay fever symptoms such as itchy eyes, headaches, and fatigue are increasing due to the rising presence of pollen from trees including Alder, Hazel, Cypress, Yew, and Elm. Professor Jonathan West from Rothamsted Research explained that recent cooler and wetter weather delayed flowering in these trees, but the sudden onset of warmer, sunnier days has swiftly triggered pollen release. The ongoing effects of climate change are extending the pollen season, with hazel now flowering nearly ten days earlier than in the past, according to the 2025 Met Office State of The Climate Report. The pollen forecast will be available on the BBC Weather app starting Thursday, 19 March.

Looking ahead to the following week, northern and western regions of the UK are likely to face further wet spells as weather fronts continue to pass through. Southern and eastern areas may enjoy drier conditions due to the influence of a high-pressure system over Europe. Between these rain bands, calmer weather may bring cooler nights and possible fog. Winds will predominantly come from the south or south-west, keeping south-east England relatively mild with temperatures around 15°C. Early spring remains a period of variable weather, with recent studies showing that climate change is playing a significant role in these fluctuations. For the most current weather updates, checking the online forecast or the BBC Weather app is recommended

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