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Water temperature in Port Monmouth (NJ) in January

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Is it warm enough to swim in Port Monmouth in January? Average water temperature in Port Monmouth in January is 41.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Port Monmouth in January is 48°F, and the coldest is 35.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Port Monmouth

Changes water temperature in Port Monmouth in January 2025, 2024

To get an accurate forecast for the water temperature in Port Monmouth for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Port Monmouth, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of January.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
January 144.2°F44.6°F39.2°F48°F
January 244.8°F43.7°F39.2°F47.5°F
January 344.8°F44.8°F40.3°F46.6°F
January 444.6°F42.8°F38.5°F46.6°F
January 544.1°F42.3°F38.8°F46.6°F
January 644.2°F42.8°F39°F46.4°F
January 741.7°F43.5°F39.4°F46.2°F
January 839.6°F42.8°F39.6°F46.2°F
January 937.6°F43°F37.6°F45.7°F
January 1037.2°F44.6°F37.2°F46.6°F
January 1138.7°F44.4°F38.7°F45.9°F
January 1239.2°F43°F39.2°F45.5°F
January 1337°F44.2°F37°F45.3°F
January 1437.8°F44.2°F37.8°F45.1°F
January 1539.9°F44.2°F39.9°F46.2°F
Day 2025 2024 Min Max
January 1640.1°F41°F38.7°F45.7°F
January 1738.7°F40.6°F38.7°F45.3°F
January 1838.7°F42.8°F38.7°F45°F
January 1937.4°F41.4°F37.4°F45°F
January 2035.8°F39.9°F35.8°F45.1°F
January 2136.7°F37.9°F36.7°F45.1°F
January 2235.1°F38.8°F35.1°F44.6°F
January 2336.7°F38.5°F36.7°F44.2°F
January 2435.8°F39°F35.8°F44.4°F
January 2536.3°F39°F36.3°F44.2°F
January 2635.2°F37°F35.2°F43.5°F
January 2737.8°F37.6°F37.6°F44.8°F
January 2839.2°F38.1°F37.9°F44.2°F
January 2938.1°F38.7°F37.8°F43.9°F
January 3038.3°F38.8°F37.2°F43.9°F
January 3138.5°F38.7°F37.2°F43.3°F
Port Monmouth water temp chart in January

Average water temperature in Port Monmouth in January over a decade

20162017201820192020
44.1°F42.8°F40.3°F41.9°F43.7°F
20212022202320242025
42.4°F42.6°F42.1°F41.4°F39.2°F

Port Monmouth sea state in January

Chart comparing the height of waves in Port Monmouth in January over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Port Monmouth in January

Port Monmouth water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in January?

Want to know where the water temperature in January is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in January. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Belford41.9°F35.1°F48°F
Ideal Beach41.9°F35.1°F48°F
Cedar Grove Beach41.5°F33.6°F47.5°F
Oceanport42.8°F37.4°F49.3°F
Cliffwood Beach40.8°F33.6°F47.3°F
Keyport40.8°F33.6°F47.3°F
Laurence Harbor40.8°F33.6°F47.3°F
Brooklyn42.4°F36.3°F48.4°F
Midland Beach41.5°F34°F47.3°F
Arrochar41.9°F35.2°F47.7°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Port Monmouth is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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