Snowfall in the Sahara Desert

More than 40cm (15 inches) of snow has blanketed sand dunes across the small town of Ain Sefra, Algeria which is 1,000 metres above sea level and surrounded by the Atlas Mountains. It is the second time snow has fallen in nearly 40 years, with the last occurring in December 2016.

A spokesman for the Met Office said: "Cold air was pulled down south in to North Africa over the weekend as a result of high pressure over Europe. The high pressure meant the cold weather extended further south than normal."

Hottest day in Sydney since 1939

Temperatures reached 47.3°C in Penrith, Sydney on Sunday 7th January – the hottest temperature in the region in 79 years, when the mercury previously reached 47.8°C.

Severe fire warnings were issued for the greater Sydney area and thousands of properties across New South Wales were left without electricity, partly because of the heat. England's batsmen also struggled on the hottest day on what was also record heat for a Test match in Australia.