Scotland has the coolest weather of any country in the United Kingdom throughout the year (with the climate at altitude varying into Cfc), with average minimum temperatures in January of −0.2 °C (31.6 °F).
Wales has warmer temperatures throughout the year than Scotland, and has milder winter minima than England, but cooler winter maxima than Northern Ireland.
Regional climates are influenced by the Atlantic Ocean and latitude.
Northern Ireland, Wales and western parts of England and Scotland, being closest to the Atlantic Ocean, are generally the mildest, wettest and windiest regions of the UK, and temperature ranges here are seldom extreme.
Some events such as the Great Storm of 1987 occurred near to the UK and caused damage in England.
The prevailing wind direction for England is from the south-west.
If the air masses are strong enough in their respective areas during the summer, there can sometimes be a large difference in temperature between the far north of Scotland (including the Islands) and south-east of England – often a difference of 10–15 °C (18-27 °F) but sometimes of as much as 20 °C (36 °F) or more.The climate of south-west England displays a seasonal temperature variation, although it is less extreme than most of the United Kingdom.Gales are less common in England compared to Scotland; however on some occasions there can be strong winds, and rarely, the remains of Atlantic hurricanes and tropical storms.Sunshine totals throughout the year are more than that of Scotland and Northern Ireland, but less than that of neighbouring England. As the sun rises higher in the sky and the days get longer, temperatures slowly rise, but the solar effect is mitigated somewhat by the effect of the cool ocean waters and westerly winds that blow across them.There is a fair chance of snow earlier in the season when temperatures are colder - often in March.