Britain has experienced its warmest Halloween ever, with the temperature reaching 23.6C at Gravesend in Kent, smashing the previous record of 20.0C.

The unseasonally warm temperatures have been caused by a blast of hot air from Spain and Portugal.

Unfortunately, the fine weather isn't expected to last. The Met Office says it will turn cooler and wetter over the weekend.

These photos of autumnal foliage around Britain should brighten the darkest of days. Send us your autumn photos and we'll include the best in a picture gallery.

autumn colours
People cross a bridge at Loch Faskally in Pitlochry, ScotlandJeff J Mitchell/Getty Images
autumn colours
Moored boats and autumn foliage are reflected on Loch Faskally in ScotlandRussell Cheyne/Reuters
autumn reflection
Autumn leaves reflected in Loch Faskally in Pitlochry, ScotlandRussell Cheyne/Reuters
autumn colours
The Pantheon is seen among autumnal colour at Stourhead in WiltshireToby Melville/Reuters
autumn colours
Autumn colours are reflected in a pond at Sheffield Park Gardens in East SussexLuke MacGregor/Reuters
autumn colours
A man reads under trees in autumn colour at Sheffield Park Garden near Haywards Heath in southern EnglandLuke MacGregor/Reuters
autumn deer rut
Fallow deer stags challenge each other during the rutting season in Bradgate Park, LeicestershireMichael Regan/Getty Images
autumn colours
Members of the Queen's Life Guard ride through Horse Guards Parade in front of red foliage during the Changing of the Guard ceremonyToby Melville/Reuters
autumn colours
A grey squirrel forages amongst the autumn leaves in London's Hyde ParkRob Stothard/Getty Images
autumn colours
A woman walks through fallen leaves in Hyde Park in LondonRob Stothard/Getty Images
autumn colours
Swimmers take an early morning dip in the Serpentine lake at Hyde Park in LondonToby Melville/Reuters
autumn colours
People enjoy the autumn sunshine as they admire the view of London from Primrose HillCarl Court/Getty Images
autumn colours
A fallen leaf floats on water in Regent's Park, LondonDan Kitwood/Getty Images
autumn colours
A woman walks past trees with leaves in autumn colours at Kew Gardens in west LondonLuke MacGregor/Reuters
autumn colours
A wild pony grazes in the New Forest, HampshireMike Hewitt/Getty Images
autumn colours
Sun shines through bracken in the New Forest in HampshireMike Hewitt/Getty Images
autumn colours
A buzzard flies in autumnal woodland in Glen Lyon ScotlandRussell Cheyne/Reuters
autumn colours
A man fishes on the shores of Loch FaskallyJeff J Mitchell/Getty Images
autumn colours
Bright orange trees are reflected on Loch Fasklally in Pitlochry, ScotlandJeff J Mitchell/Getty Images