Waikato police have responded to 174 domestic violence incidents since Christmas Day.
Police have issued a plea for people to watch for signs pressure is building, and take steps to prevent it escalating into violence.
District prevention manager Inspector Rob Lindsay said 93 of the incidents were in Hamilton while 81 happened in smaller towns and rural locations.
"The one thing about domestic violence that really stands out is it doesn't discriminate, you can be rich or poor and it makes no difference because when the pressure builds up people from all walks of life can become victims."
Mr Lindsay said higher temperatures, financial pressure, increased alcohol use and children being on holidays combine to create a volatile mix.