More heavy rain is on the way for the Bay today, and it might get thundery this afternoon.
A severe weather warning is in force until 2am, with the potential for another 70-90mm of rain to accumulate across the already sodden region.
Metservice forecasters say rain intensities could reach 25 to 35mm per hour, which could potentially cause surface flooding, slips and rapidly rising waterways.
Metservice meteorologist Tom Adams said it was "pretty rainy" overnight, but there was still more rain to come.
"It's going to get more convective, more thunderstormy, later in the day in coastal areas."
Mr Adams said the gauges had not recorded any huge downpours Tauranga.
Areas of the Kaimai ranges and Papamoa hills could have received 40-50mm overnight, he said.
A north-easterly wind drove a big swell last night, particularly around the early evening high tide.
There were no weather-related police or fire service call outs overnight.
The biggest wave recorded was 7.3m high about 6pm, and the swell peaked at 4 metres, Mr Adams said.
The swell had been gradually decreasing since then, and was sitting at about 3m this morning.
Mr Adams expected it to continue decreasing as the weather system moved away, but said there should still be some good waves for surfers over the weekend.
Yesterday the big swells prompted the council to close the Mauao base track. This morning the track was reopened.
The council did not expect it would need to be closed again today due to a decrease in the swell.
Tauranga City Council had no weather issues reported overnight.
In the Western Bay of Plenty, the council has had one call about surface flooding at the corner of Oropi Road and Glue Pot road this morning, customer services team leader Carolyn Bennett-Ouellet said.