"There's a high that's anchored up to the east of the country so the Bay of Plenty is going to get a northeast onshore flow this week," Pyselman said.
"It looks like it's going to be showery in that onshore northeasterly flow for the next couple of days.
"On Thursday we have a bit of a front moving in from the west and more rain there. Friday that feature moves away and sort of a showery sort of a day."
Meanwhile, Pyselman said temperatures were going to be average for this time of year, ranging between 16C and 18C for most of the week.
"It's nothing crazy to be fair, either about average for this time of year or slightly above."
There were no weather warnings for the Bay of Plenty.
MetService's Whakatāne Airport station recorded a maximum temperature of 20.6C on Saturday, the third highest in the country behind Taumarunui with 20.7C and Ardmore Airport with 21.2C. Rotorua Airport reached a maximum of 17.7 for the 25th warmest place and Tauranga Airport reached 19.8C for the ninth.