According to yesterdays Cambodian Daily "The cold spell that is currently sweeping the country is expected to last until the weekend at least, officials said Wednesday."
"With low temperatures countrywide averaging around 18 degrees c, warnings have also been sounded that a few degrees lower could be dangerous."
At least it hasn't reached the emergency low of 12 deg which can be fatal for older people. The government said it will alert people if it gets that cold.
"...provincial authorities have warned locals to wear thick clothing and light fires to keep warm..."