Police have blamed the summer heatwave for a rise in drink-driving.
Figures released on Thursday by Greater Manchester Police (GMP) show more motorists were arrested for the offence in August than last Christmas.
During a force-wide clampdown, 13% of drivers breathalised were over the limit compared with just 8.5% over the festive season.
And police say this summer's record temperatures are the reason for the increase - because people drank more alcohol to keep cool.
Inspector Brian Wood, Force Road Safety Officer, said: "The lead-up to Christmas is traditionally a
time when we focus on drink driving but the effect of alcohol on drivers is every bit as dangerous
in the summer.