The United Kingdom is positioned at the convergence between the moist maritime and dry continental air currents, which results in atmospheric instability and extremely unpredictable weather. Many types of weather can be experienced in one day and travellers should go prepared, particularly as in most regions of the UK rain is possible at any time of year. Winters, between December and February, are cold and wet with occasional snow, especially in the high-lying areas. Summers, between June and August, are generally warm with frequent showers. Northern Ireland, Wales and the western regions of England and Scotland enjoy the mildest temperatures, but are the wettest and windiest parts of the UK; the eastern regions of England and Scotland are drier and cooler with more extreme temperatures. Generally speaking, southern regions are more temperate and mild than northern regions. England enjoys the warmest temperatures on average and is generally more sunny and less rainy than the rest of the UK. Scotland has the coldest weather and is also the wettest.
The peak tourist season in the UK is summer, between June and August, but it is pleasant to visit any time between April and October. The winters are cold and sometimes snowy, but travelling out of season is cheaper and the winter months can be cosy and exciting, particularly over the festive season.