New Jersey — Water Temperature Today and Throughout the Year
Discover water temperatures in New Jersey (United States), with real-time data and annual trends. Find all locations in the region and check the water temperature in them. We find every place where you can swim and show you the water temperature there today and throughout the year.
Sea Water Temperature Along the Coast
Chart of Average Temperature Changes Over the Last 60 Days
Places with the Warmest Sea Water Today
The Most Popular Seaside Places
- Ocean City11°C
- Atlantic City11°C
- Sea Isle City12°C
- Cape May12°C
- North Wildwood12°C
- Sandy Hook10°C
- Margate City11°C
- Strathmere11°C
- Belmar9°C
- Brigantine11°C
- Barnegat Light9°C
- Long Branch9°C
- Wildwood Crest12°C
- Somers Point11°C
- Sea Bright10°C
- Ventnor City11°C
- Seaside Heights10°C
- Absecon11°C
- Ship Bottom10°C
- Jersey City11°C
- Pleasantville11°C
- Mystic Island11°C
- Surf City10°C
- Beach Haven10°C
- Avalon12°C
- Avon-by-the-Sea9°C
- Wildwood12°C
- Longport11°C
- Long Beach10°C
- Point Pleasant Beach9°C
- Asbury Park9°C
- Villas12°C
Coastal Seas and Oceans
Water Temperature in Lakes and Rivers
Popular Lakes
Popular Rivers
Popular Places
Water Temperature and Swimming Overview
Regions and Map
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Water Temperature Trends
New Jersey's coastline along the Atlantic Ocean experiences a wide range of water temperatures throughout the year. During the summer months, the ocean temperature can reach around 70°F to 80°F (21°C to 27°C), making it comfortable for beachgoers and swimmers. These warmer waters are a significant draw for tourists during the summer season. In the winter, however, the water temperature drops significantly, often reaching 40°F to 45°F (4°C to 7°C), which is too cold for most people to enjoy swimming. This colder water is influenced by the North Atlantic currents and cooler weather patterns.
Inland lakes and rivers in New Jersey, especially those in the northern and central parts of the state, tend to have slightly different temperature patterns. During the summer months, freshwater lakes such as Lake Hopatcong can see water temperatures ranging from 70°F to 75°F (21°C to 24°C), offering ideal conditions for boating, fishing, and swimming. In smaller, more shallow lakes, water can warm up more quickly, reaching similar temperatures. However, these waters cool down rapidly in the fall, with lake temperatures often dipping to around 50°F to 60°F (10°C to 15°C) by October, making it less ideal for water activities.
Rivers in New Jersey, such as the Delaware River, have temperatures that fluctuate with the seasons. In the warmer months, the river water can reach about 60°F to 70°F (16°C to 21°C), providing a cool but comfortable setting for kayaking, tubing, and fishing. As temperatures drop in the fall and winter, river temperatures also decrease, often falling below 40°F (4°C), especially in the northern regions. These cold temperatures make the river less conducive for recreational swimming, but they do attract those interested in cold-water fishing or winter activities like ice fishing.