A run of hot, dry weather in Hawke's Bay has seen the region make Niwa's weekly Hotspot Watch as one of five North Island areas experiencing soil moisture deficits.
The watch, which monitors soil moisture across the country to help assess whether severely to extremely dry conditions are occurring or imminent, shows "much of Hawke's Bay" is now a hotspot.
Soil moisture levels had continually decreased across the country in the past week and persistent hotspot regions had the potential to develop into drought, the Niwa report read.
"The most significant decreases were observed from the Coromandel Peninsula to Bay of Plenty as well as Gisborne, northern Hawke's Bay, northern Auckland and eastern Northland."
Hawke's Bay Regional Council climate scientist Dr Kathleen Kozyniak said many of the council's monitored sites in the region had received of patchy bouts of rain in last month's thunderstorms.
"Soil moisture at our sites tend to be at medium levels or above for most of them except the one that we've got down in Porangahau that is drier than usual."
The southern coastal area of Hawke's Bay was the driest, having received about 70 per cent of its average spring rainfall, she said.
According to Niwa, next week's rainfall could range from as much as 25mm in the Central Plateau to as little as 5mm along the East Coast, and wasn't expected to improve soil moisture levels.