A theme of the last 9 months has been a strong iberian/euro high trying hard to push north, but quite strong heights to our north as well, sometimes NW, sometimes NE, but never positioning themselves to allow northern blocking to exert a hold against the atlantic. The effect, the atlantic trough has been squeezed inbetween on a collision course for the UK, right now is a good example, July notably so. Sometimes the trough has elongated and been forced back on itself to our west, pushing in mild southerlies and south westerlies.. Feb a good example. We do seem to be in a never ending washing cycle of low pressure spinning around and around over and near the UK.
Back to the Easter 4 day period, mixed in a word, variable conditions UK wide, unusually the far north may end up being the driest place.
Good Friday - very showery, some places could be plagued by heavy ones, others may escape dry. Rather cloudy and temps average.
Easter Saturday - less showery, but still threat for anywhere, brighter breaks and will feel mild in any sun and light winds
Easter Sunday - perhaps the best chance of staying dry, and mildest day of the 4 days. Could be very decent.
Easter Monday - could be quite wet in places. A little cooler.