World sea water temperatures

Water temperature in Union Beach (NJ) in April

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Is it warm enough to swim in Union Beach in April? Average water temperature in Union Beach in April is 48°F and therefore is not suitable for comfortable swimming. The warmest sea in Union Beach in April is 57.2°F, and the coldest is 40.5°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Union Beach

Changes water temperature in Union Beach in April 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
April 148.4°F45.3°F40.5°F48.4°F
April 247.8°F45.1°F40.8°F48.6°F
April 347.3°F45.1°F41.2°F49.6°F
April 447.7°F45°F41.5°F49.8°F
April 548°F44.8°F41.9°F49.3°F
April 647.5°F46.6°F41.7°F49.5°F
April 747.1°F43.7°F41.4°F50.5°F
April 848.7°F45.3°F41.4°F51.6°F
April 946.8°F46.2°F41°F51.8°F
April 1048.4°F47.3°F41.4°F52°F
April 1147.8°F45.1°F41.7°F50.9°F
April 1247.5°F47.5°F42.3°F51.4°F
April 1346°F50°F42.1°F54.3°F
April 1446.8°F49.5°F41.5°F55.8°F
April 1548.4°F54°F41.9°F55.2°F
Day 2025 2024 Min Max
April 1648°F53.6°F42.1°F53.6°F
April 1749.3°F52°F42.4°F55.2°F
April 1848°F50.9°F42.6°F55.8°F
April 1947.5°F51.6°F43°F55.8°F
April 2046.8°F52.3°F43.3°F54.1°F
April 2148.2°F51.4°F44.1°F55.2°F
April 2249.6°F52.3°F45°F54.5°F
April 2354.5°F52.5°F45.5°F55.8°F
April 2457.2°F54°F45.7°F57.2°F
April 2557°F53.2°F46.9°F57°F
April 2657°F52.5°F47.8°F57°F
April 2756.5°F52.2°F47.7°F56.5°F
April 2854.9°F52.2°F48.2°F54.9°F
April 2955.8°F53.1°F48.4°F55.8°F
April 3054.7°F52.7°F47.8°F54.7°F
Union Beach water temp chart in April

Average water temperature in Union Beach in April over a decade

20162017201820192020
48.7°F47.8°F45.3°F49.5°F49.5°F
20212022202320242025
50.9°F48.9°F52.5°F49.5°F50°F

Union Beach sea state in April

Chart comparing the height of waves in Union Beach in April 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 Union Beach in April

Union Beach 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 April?

Want to know where the water temperature in April 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 April. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Raritan Bay48°F40.5°F57.2°F
Laurence Harbor48.2°F40.6°F57.6°F
Tottenville48.2°F40.6°F57.6°F
South Amboy48.2°F40.6°F57.6°F
Great Kills47.8°F40.5°F55.8°F
Woodbridge48.2°F40.6°F57.4°F
Cedar Grove Beach47.7°F40.3°F54.7°F
Fair Haven47.7°F40.1°F55.4°F
Port Monmouth47.7°F40.1°F55.4°F
Belford47.7°F40.1°F55.4°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 Union Beach 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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