Rosh Hashana begins on Friday 11 September, with GMP increasing patrols to provide extra security and a visible police presence.
Greater Manchester Police has enhanced its command structure for the period, using an approach similar to policing operations for football matches, music events and other large events.
Neighbourhood officers will carry out patrols across Greater Manchester and speak with communities about how to report suspicious activity.
GMP said specialist resources will also be deployed following additional funding received earlier this year.
Since April, police teams have dedicated more than 5,500 officer hours to religious sites across Greater Manchester. GMP said around 55 to 60 officer hours a day have been dedicated to security at religious sites since the summer.
Police said the plans were developed following discussions with community leaders about local concerns.
Chief Superintendent Dave Meeney, Gold commander for the High Holy Days, said: "We have significantly developed the way in which we police these events, and we have worked with local residents and businesses to make sure everyone can enjoy this time without fear or concern.
"Our officers will continue working with Jewish communities as we head into this important period for their faith, which we understand is a time which may bring heightened concern for the community.
"I'd like to thank members of the public for their continued cooperation and unwavering support in this space. Your reports are incredibly important to us, and they play a key role in ensuring we provide the right care and protection for our communities.
"We have enhanced plans in place, which we are keeping under constant review to ensure everyone across GM can celebrate safely. If you have any questions or concerns, please feel free to speak with our officers on the ground.
“Our priority is always the safety of the public, and our determined officers are working around the clock to listen, respond, and act on your concerns."
Police are asking people to report suspicious or unusual activity. Non-emergency reports can be made through 101 or GMP's LiveChat service, while Crimestoppers can be contacted anonymously on 0800 555 111.
People should call 999 in an emergency.
