Along with the rest of South West England, Exmoor has a temperate climate which is generally wetter and milder than the rest of England. The mean annual temperature at Simonsbath is with a seasonal and diurnal variation, but due to the modifying effect of the sea the range is less than in most other parts of the UK. January is the coldest month, with mean minimum temperatures between . July and August are the warmest months in the region, with mean daily maxima around . In general, December is the month with the least sunshine and June the month with the most sun. The south-west of England has a favoured location with regard to the Azores high pressure when it extends its influence north-eastwards towards the UK, particularly in summer.