Mantoloking — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Mantoloking (New Jersey, United States). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Mantoloking help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Mantoloking in the Atlantic Ocean today is 19°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Mantoloking has risen over the last week and month. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Mantoloking will be 19.7°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 5 | 14.9°C | 16.0°C | |
| JUN 6 | 15.3°C | 16.3°C | |
| JUN 7 | 15.9°C | 17.3°C | |
| JUN 8 | 16.3°C | 17.0°C | |
| JUN 9 | 16.8°C | 17.3°C | |
| JUN 10 | 17.4°C | 18.0°C | |
| JUN 11 | 17.5°C | 18.3°C | |
| JUN 12 | 17.7°C | 18.5°C | |
| JUN 13 | 19.0°C | 18.5°C | 19.0°C |
| JUN 14 | 18.3°C | 19.1°C | |
| JUN 15 | 18.8°C | 19.2°C | |
| JUN 16 | 19.0°C | 19.3°C | |
| JUN 17 | 19.3°C | 19.4°C | |
| JUN 18 | 19.3°C | 19.5°C | |
| JUN 19 | 19.5°C | 19.6°C | |
| JUN 20 | 19.5°C | 19.7°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Mantoloking, a narrow barrier island on the New Jersey coast, sits between the Atlantic Ocean and Barnegat Bay, giving it two distinct water environments. Seasonal sea-surface temperatures along this stretch typically range from about 2–8 °C in winter, rising in spring to roughly 6–15 °C, and peaking in summer at approximately 18–25 °C. Autumn sees a steady cooling, with waters commonly between 12–20 °C as the season progresses. Shallow bay waters warm and cool more quickly than the open ocean, so temperatures in the bay can be several degrees warmer in late spring and early summer and slightly warmer into the fall compared with offshore Atlantic conditions.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 2°C | 6°C | 8°C |
| February | 3°C | 5°C | 7°C |
| March | 3°C | 5°C | 9°C |
| April | 4°C | 8°C | 12°C |
| May | 8°C | 13°C | 18°C |
| June | 14°C | 19°C | 24°C |
| July | 19°C | 24°C | 26°C |
| August | 21°C | 24°C | 27°C |
| September | 18°C | 22°C | 25°C |
| October | 13°C | 19°C | 22°C |
| November | 11°C | 14°C | 18°C |
| December | 4°C | 9°C | 13°C |
* Click on a month to view detailed water temperature data.
Mantoloking: Weather Forecast
June 14
June 15
June 16
June 17
June 18
Location, Beaches & Local Information
Nearby Beaches & Facilities
Downer Ave Beach Access
Mantoloking Beach
Mantoloking Private Beaches
Lyman Street Beach Access
Brick Beach Ii
Brick Beach Two
Nejecho Beach
Brick Beach I
Bay Head Beach
Swimming Conditions
Swimming opportunities in Mantoloking reflect these temperature patterns and the community’s residential character. During midsummer, when ocean temperatures usually reach the upper teens and low twenties °C, beach swimming is comfortable for most visitors and local lifeguard services may be in operation seasonally. Outside that window, bay swimming can feel more inviting because it tends to be calmer and warmer, while early spring and late fall ocean dips are noticeably cold and often require wetsuits for extended time in the water. As with any coastal destination, swimmers should be attentive to local advisories, surf and rip current conditions, and posted signs to choose the safest and most pleasant spots for a beach holiday.