Weather in Jersey City is much like most of the east coast with weather extremes in the winter and summer always possible. The area is vulnerable to Noreasters which can dump large amounts of snow and bring frigid temperatures, so caution is always advised.
Harismus Cove, like most of Jersey City, is flat which is perfect for those that do not see walking around the neighborhood with their dog as exercise. You can wander the streets, head to the local parks, and never find a single hill that will stand in the way of your adventure. If you are combining your dog’s outings with your exercise, why not consider using that shiny new smartwatch to track your progress and heart rate? It will allow you to pick up the pace, if you're sure Fluffy is up for it, and get your heart rate in the target zone.
Expect to be walking on city streets and feel lucky if you happen to find a patch of grass for your pup to explore. Keep in mind that in the summer months, concrete can be very hot during the day. Hot concrete can burn the delicate skin on sensitive paw pads!
While you sight-see through the rows of historic buildings, your dog is sniffing to explore the world around them! Finding a few greenways can ensure that they have some great places to do their own 'smell-seeing.'
Harismus Cove is a small neighborhood with no greenways of its own, but fortunately, its big brother neighborhood, the Historic District, has plenty of places you can travel to. Two blocks away to the north is Hamilton Park. This park is not only a greenway with lots of grass and smells to explore, but it also has two dog parks!
About four blocks to the south is Van Vorst Park, another nice park with an abundance of grass and trees as well as another dog-friendly space. There are a number of other small parks and community gardens that make nice detours on your walk, but these two large parks are great alternatives to pounding the hot pavement day after day.