As you would expect many people do hire motorhomes in other parts of the country and then head off to Cornwall. However let us not forget those of you who live in Cornwall and also those who may arrive in the South West of England by air. Visitors to Cornwall are served by airports at Newquay and Plymouth, whilst private jets, charters and helicopters are also served by Perranporth airfield; nightsleeper and daily rail services run between Cornwall, London and other regions of the UK.
Cornwall has a temperate Oceanic climate and has the mildest and sunniest climate in the United Kingdom, as a result of its southerly latitude and the influence of the Gulf Stream. The average annual temperature in Cornwall ranges from 11.6 °C (53 °F) on the Isles of Scilly to 9.8°C (50 °F) in the central uplands. Winters are amongst the warmest in the country due to the southerly latitude and moderating effects of the warm ocean currents, and frost and snow are very rare at the coast and are also rare in the central upland areas as well. Summers are however not as warm as other areas in southern England. Due to the proximity to the sea also makes Cornwall’s weather relatively changeable.
Cornwall is one of the sunniest areas in the UK, with over 1541 hours of sunshine per year, with the highest average of 7.6 hours of sunshine per day in July. The moist, mild air coming from the south west brings higher amounts of rainfall than eastern Great Britain, at 1051 to 1290 mm (41.4 to 50.8 in) per year, however not as much as more northern areas of the west coast. The Isles of Scilly, for example, where there are on average less than 2 days of air frost per year, are in the USDA Hardiness zone 10, which is the only area in the UK that is in this zone and where there is on average less than 1 day of air temperature exceeding 30°C per year, are in the AHS Heat Zone 1. Extreme temperatures in Cornwall are particularly rare, however extreme weather in the form of storms and floods is common.