Key keywords: Tuesday weather forecast, nicest day of the week, UK Met Office, mild spring temperatures, sunny spells, low precipitation risk, regional weather outlook, pollen count alert, weekend weather dip According to the latest official forecast released by the UK Met Office on Monday, Tuesday is officially set to be the nicest day of the week across 90% of regions in the UK, with similarly pleasant conditions expected across most of Western Europe including France, Belgium, and the Netherlands. For areas in southern England, maximum daytime temperatures will peak at 18°C, 3 to 4 degrees higher than the historical average for mid-April, while northern England, Wales, and even the Scottish Highlands will see unseasonably warm highs between 13°C and 15°C. Unlike the scattered light showers and strong northwesterly winds recorded across most regions on Monday, Tuesday will bring less than 10% chance of rainfall for almost all inland areas, with cloud cover expected to drop below 20% for 6 to 8 hours of uninterrupted sunny spells between 10 a.m. and 6 p.m.. The pleasant conditions are driven by a temporary high pressure system sitting over the North Sea, which will push away the cold, wet air masses that have dominated the region for the past 10 days. Meteorologists warn that the good weather will be extremely short-lived: a cold front moving in from the Atlantic will reach the west coast of the UK by Wednesday morning, bringing persistent light rain, gusty winds, and a 5°C drop in average temperatures across the country. Thursday and Friday will see even colder conditions, with maximum temperatures falling to 10°C to 12°C, and isolated hail showers expected in hilly areas of Scotland and northern England. The weekend will bring further weather deterioration, with strong winds of up to 40mph and heavy, persistent rain forecast for most southern regions. Officials are advising members of the public to plan any outdoor activities, including hiking, gardening, family picnics, and sporting events, for Tuesday if possible, to avoid disruption from bad weather later in the week. They have also issued a moderate pollen count alert for southern and central England, as the dry, warm conditions will cause high levels of grass and tree pollen release, which may trigger symptoms for people with seasonal allergies. The forecast has already led to a surge in bookings for outdoor dining spots, public park picnic areas, and countryside hiking trails across the country, with many hospitality businesses reporting that their outdoor seating is almost fully booked for Tuesday lunch and dinner services.