Britain is set for another week of warm weather, with forecasters predicting temperatures could rise as high as 25C (77F) by Wednesday. The promise of more sunshine comes after Friday saw the hottest day of the year so far with 21.9C (71.4F) observed at St James's Park in London. Meanwhile the Met Office has predicted warmer-than-average temperatures for April, May and June of this year in its long-range forecast. But winds of more than 75mph were recorded in north Wales today, and snow was also reported to have fallen on high ground in northern England. The Met Office has a severe wind warning in place until 5pm today for North Wales and northern England from Derby up to Northallerton. Scroll down for video . South coast: Sunseekers headed to Brighton beach today to enjoy the warm weather, two days after the hottest day of the year so far . Over he goes: Free-runner Aiden Knox, 15, performs a flip from the South Bank in central London during the warm weather today . All aboard: A celebration of vintage transport is taking place today at the Great North Steam Fair in Beamish, County Durham . Tasty treat: A man holds an ice cream for a young boy in the sunshine today on Brighton beach in East Sussex . Back in time: Visitors to the fair at Beamish Museum have been able to view at close quarters an array of more than 160 vintage vehicles . Sunday jazz: A saxophonist was among the people - and swans - enjoying the warm weather in Christchurch, Dorset, today . Out for a walk: People enjoy the warm conditions during an April stroll at Christchurch Quay in Dorset today . The sunny weather made Christchurch shine in all its springtime glory. The Met Office has predicted warmer-than-average temperatures for April, May and June of this year in its long-range forecast . Enjoying the weather: People sit in the sunshine at Parliament Square in central London today . The mercury this weekend has been around the 13C to 14C (55F to 57F) mark - much closer to the average for the time of year. Today will be largely dry and bright across the South, but it will turn windy with a fresh south-westerly wind - and rain will move east across the North. Early mist and fog tomorrow will soon lift to leave a dry and bright day for most areas, but it will be cloudy in northern Scotland. MeteoGroup forecaster Paul Mott said that after snow fell on the Pennines today, the weather will be 'quite a bit different' for the next few days. ‘It will certainly turn much warmer,’ he said. ‘Across England and Wales it will be dry, bright and there will be lengthy periods of sunshine.’ Temperatures will reach as high as 16C (61F) in south-east England tomorrow, while Scotland will be cooler, with the mercury as low as 10C (50F). On Tuesday, temperatures will reach up to 22C (72F) in south east England, while Scotland will again have a lower high of 15C (59F), Mr Mott said. Forecast: Today will be largely dry and bright across the South, but rain will move across the North. Tomorrow will be dry for most areas . Looking ahead: It could be 25C on Wednesday, and the Met Office has forecast warmer-than-average temperatures for April to June . Making the most of it: A woman holds an ice cream (left) and two men play basketball (right) on Brighton beach today . Deckchair weather: A man in the sun at Hyde Park in central London. The capital recorded the UK's top temperature of 2015 so far last week . Sitting down: A man enjoys a rest as members of the Brighton Beach Volleyball Club play a game on the East Sussex beach today . Historic: Steam locomotives, penny farthings, motor cars, steam rollers and traction engines are all in working display in Beamish . Sunny in the South: Surrey's Kevin Pietersen batting today during an early season match at The Parks in Oxford . Summer breeze: A bypasser watches on as kite boarder makes the most of the sunshine and strong breezes in the sea at Worthing beach . Wednesday is likely to be the warmest of the year for much of Britain, with the mercury reaching up to 24C (75F) in London and South East England. Mr Mott said the forecast for Thursday and Friday was ‘more uncertain’ when it is expected to be cooler but will remain dry. The predicted hot weather is result of a plume of warm air heading towards the UK from the south west, coming from as far as the Azores Islands. Temperatures in London of 21C (70F) this Tuesday and 22C (72F) on Wednesday are expected to be better than in many holiday destinations. Valencia will see 20C (68F) and 17C (63F) respectively and Marseille will have 20C and 19C (66F), while Malta will be 18C (64F) on both days. Yesterday's UK high temperature was 14.8C (58.6F) in Langdon Bay, Kent, while St Athan in South Wales had the most sunshine, with 11.5 hours. In Cumbria: Snow caused difficult conditions for motorists today including these two passing buses at Kirkstone Pass  in the Lake District . On patrol: This police car was among the vehicles facing tricky conditions on the Kirkstone Pass, connecting Ambleside to Patterdale . Snow in Scotland: Gerry Learmonth was caught in a blizzard today as he walked his dog at Cairn Gorm Mountain in the Highlands . Making it through: Two mountain bikers in the Caingorm Mountains in Scotland this morning where fresh snow has been falling today . But Upper Lambourn, Berkshire, had a temperature of -0.2C (31.6F) at 3am today, while there was sleet at Braemar in Aberdeenshire. And a wind speed of 76mph was recorded at Capel Curig in the Snowdonia region of north-west Wales this morning, reported BBC Weather. Additionally, with summer seeming to come early for many last week, doctors reported seeing hay-fever sufferers experiencing symptoms. This was despite the pollen levels being moderate for much of the south of England and low for the rest of the UK according to the Met Office. The Sunday Telegraph warned today of a 33 per cent increase in the number of people facing hayfever this year because of worsening conditions. High pollen counts are mixing with heavy pollution and Saharan dust, with hayfever now twice as common in towns and cities than the countryside. Alert: The Met Office has a severe wind warning in place (left) today, while the current wind patterns over Britain can be observed (right) Surface pressure: The warm front (in red above) over Britain at noon today is followed by a cold front (in blue) and occluded front (in pink) Last week: The sun sets behind the Houses of Parliament in London on Friday, as the UK had its highest temperature of 2015 so far . Warm conditions: People relax on the beach in Broadstairs, Kent, last Wednesday - on what was a fine week of weather for the UK . The Met Office’s three-month outlook says: ‘For April-May-June temperatures near-to above-average are most likely. ‘Overall, the probability that the UK-mean temperature for April-May-June will fall into the coldest of our five categories is 10 per cent. ‘And the probability that it will fall into the warmest category is between 20 per cent and 25 per cent.’ Last Friday, Londoners made the most of the high temperatures, with Kew Gardens reaching 21.7C (71.1F) and Heathrow Airport 21.3C (70.3F). But high levels of air pollution accompanied the heat, with many parts of England affected by poor air quality throughout the day. Bookmakers Ladbrokes said today that spring 2015 is now odds-on to be the hottest on record, with 5/6 offered on it beating the 2011 high.
Met Office predicts warmer-than-average temperatures for April, May and June in its long-range forecast .
Tuesday and Wednesday will be warmest days this week with 25C possible - above Marseille and Valencia .
Temperatures this weekend around 14C - with today  dry in South but wet and windy in North and Wales .
Severe wind warning in place for North Wales and northern England with 76mph recorded in Snowdonia .