This is the latest outlook for the next four weeks from the Japanese Met Agency the JMA. It is not meant to be a forecast but a general outlook. I have added the 3 images together and rotated them and added a red line so you can see the UK. Blue colours are low pressure area’s and oranges high pressure area’s.
Week 1, 14th March to 20th.
Deep low pressure area stretches across the North Atlantic the UK and Scandinavia. High pressure stretches across the Mid Atlantic Southern England and into Southern Europe. This looks like it will be a wet period with above average rainfall. The higher pressure could start to pushup from the South during the last few days of this period bringing a slight improvement.
Week 2, 21st March to 27th.
High pressure will now be in control with the high pressure centered to the South East of the UK and over Europe. It is looking mainly dry with below average rainfall. The temperature will be around 1 to 2 degrees above average for the end of March due to a southerly air flow. The exception is Scotland where there will be above average rainfall.
Week 3-4, 28th March to 10th April.
During this two week period there will little change from the previous week. So we can expect mainly dry conditions and temperature around 1 to 2 degrees above average for early April.