The Public Health Department released the latest information as the Nation Chanel reported the deaths of five Phuket tourists in Cha-am as their Bangkok-bound mini-van slammed into a truck yesterday.
The monthly figure for the road toll on Phuket was down from a figure of 10 in December and the lowest since five deaths were recorded in May, 2010.
Fatalities on Phuket roads have been trending downwards for two years, official figures show, despite population increases.
There were 137 deaths on Phuket's roads in 2010 - an average of 11.4 deaths a month - compared to 153 in 2009.
What continues to alarm health officials, though, is the high number of serious injuries incurred. In January, 1517 people were treated in hospitals for crash injuries.
Three people died from drowning on Phuket in January, Public Health said.
The driver of the van involved in yesterday's mass fatality, Uthen Faksaeng, 34, will be charged with causing death by negligent driving, say police.