Ground saturation is measured on a numerical scale from 0 to 150. At the start of October, Napier sat at the low end of the scale. It is now at 140.
The farming community had reported they were already starting to see cracks in the ground, she said.
"People need to conserve water at the moment. We're just encouraging people, its not the time for filling up swimming pools or washing cars."
The urban areas of Hawke's Bay were unlikely to see any rain this coming week - although if a possible "rogue" isolated shower did occur, any rain would just "slide off".
"The trend is fine but there could be isolated evening showers around the ranges. The farming community will certainly appreciate any water they can get there," she said.
Today is forecast to be mainly fine, with high cloud at times and isolated evening showers about the ranges. There could be light winds and afternoon sea breezes cooling down a high temperature of 25C.
Tomorrow would be mainly fine with northerlies, and the potential for a thunderstorm about the ranges, Ms Murray said.
Although temperatures would increase from the mid to high 20s as the week went on, it was not expected to break 30C.
This was in line with temperatures around the country, Ms Murray said, with things "starting to heat up again".
She said it had been unusual to get such high temperatures during November, but it was heading back into normal for this time of year.
The week starts with a high of 25C, with cloud forecast to increase on Monday with late rain developing, and northerlies changing southerly late in the day.
Long, fine spells are on the cards for Tuesday with southwesterlies dying out. Wednesday is set to be partly cloudy with southerlies, with the week's lowest high of only 23C.
The weather heats up on Thursday to 27C, for a cloudy day with light winds. By Friday temperatures will have risen to 29C, with some cloud and not much wind.
Hastings District and Napier City councils both currently have level two water restrictions in place, which means sprinklers and hoses can be used only between 6am-8am and 7pm-9pm. Even numbered houses can use them on even days of the month, and odd houses on odd days.
Water consumption lifts by up to 70 per cent in summer months and is caused primarily through outdoor water use.