"Typically the overnight low is about 4C or 5C."
Corrigan said there was a high-pressure front moving across on Monday bringing with it warmer temperatures.
The overnight low in Napier was expected to be 8C in Napier and 6C in Hastings.
Tuesday and Wednesday were expected to be fine with westerlies kicking in, he said.
"Tuesday and Wednesday will both be nice, fine days," he said.
The highs on Tuesday for Napier was expected to be 17C and 16C for Hastings, with overnight lows of 6C in Napier and 5C in Hastings, with similar temperatures on Wednesday.
"On Thursday and Friday the winds will turn northeasterly," Corrigan said.
Temperatures will once again hover around the 16C to 17C mark with overnight lows expected to be between 5C and 7C, on both Thursday and Friday.
"Hawke's Bay can expect a long run of clear, dry weather."