With a high of 24C for Napier and 23C for Hastings on Sunday, temperatures will drop slightly Monday to 21C in Napier and 22C in Hastings.
"It's not too bad for much of the week. Temperatures take a little bit of a dip Monday and Tuesday, but generally speaking it's quite a warm period," he said.
On Tuesday cloudy periods will be expected and the wind will turn northeasterly across Hawke's Bay.
Wednesday will be brighter with high clouds in Hastings and Napier with northerlies, pushing up temperatures, according to Best.
Periods of rain are expected from Wairoa to Waipukurau on Friday, but the temperature is expected to stay warmer than usual across the region.