A high crash rate over the weekend has left Bay of Plenty police urging drivers to adjust to the conditions.

Western Bay of Plenty road policing manager Senior Sergeant Ian Campion said he was "disappointed" with the nine crashes that took place.

"Nine is too many," he said.

"Fortunately none were on the State Highway networks."

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When asked if the rainy weather had contributed to the crash rate, Mr Campion said, "we're very quick to blame conditions, but people need to make sure they adjust their driving to the conditions, that is what driving is about."

"You're not going to go into your garage at 30 km/h."

The crashes were spread across urban and rural areas.