There may also be scattered showers and some cloud on Saturday, but this will clear on Sunday.
Hines said temperatures will climb again next week, with a high of 26C expected in Napier on Monday and 30C on Tuesday.
No new water restrictions were put in place during the hot weather.
Napier and Central Hawke's Bay have maintained their level two water restrictions, meaning residents may only water their garden with a handheld hose on alternate days.
Even numbered houses should water their gardens on even month days and odd numbered houses should water on odd days.
Neither Hastings nor Wairoa District Councils have put water restrictions on residents yet.
A spokesperson for Hastings District Council said water restrictions may be put in place next week.
"The council has been, and will continue to be, monitoring the situation closely.
"Potentially the council will impose water restrictions next week."
There were also no new fire restrictions, with most areas of Hawke's Bay still classified as "open" meaning no permit is needed to light an open air fire.
However, Fire and Emergency NZ recommended exercising caution, and checking its website beforehand, because fire restrictions can change in an instant.