World sea water temperatures

Water temperature in Mastic in April

Is it warm enough to swim in Mastic in April? Average water temperature in Mastic in April is 45.3°F and therefore is not suitable for comfortable swimming. The warmest sea in Mastic in April is 53.2°F, and the coldest is 37.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Mastic

Changes water temperature in Mastic in April 2025, 2024

To get an accurate forecast for the water temperature in Mastic for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Mastic, 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 143.7°F43.3°F37.8°F46.4°F
April 243°F43.5°F38.3°F47.1°F
April 343.2°F43.5°F38.5°F46.9°F
April 442.6°F43.7°F38.7°F47.7°F
April 543°F43.2°F38.8°F47.7°F
April 643.2°F43.3°F39.6°F47.3°F
April 743.3°F43.3°F39.7°F47.7°F
April 844.4°F43.3°F39.9°F48°F
April 944.1°F43.3°F39.7°F47.8°F
April 1043.7°F42.8°F40.1°F48.2°F
April 1143.5°F43.2°F40.1°F48.4°F
April 1243.7°F45.1°F40.8°F48.6°F
April 1344.2°F46.4°F41.2°F49.1°F
April 1445°F45.9°F41.4°F49.6°F
April 1545.5°F47.3°F41.4°F49.3°F
Day 2025 2024 Min Max
April 1644.6°F47.1°F41.2°F51.8°F
April 1744.8°F47.5°F41.2°F53.2°F
April 1845.7°F46.6°F41.4°F52.3°F
April 1944.8°F46.8°F41.5°F52°F
April 2045°F46.8°F41.9°F52.2°F
April 2145°F46.9°F42.4°F52.9°F
April 2245.5°F46.9°F43.3°F52.7°F
April 2347.8°F47.1°F43.5°F51.4°F
April 2448.7°F48.2°F43.7°F51.1°F
April 2548.6°F47.7°F43.9°F51.6°F
April 2648.6°F48°F44.2°F51.8°F
April 2748.4°F48.2°F44.8°F51.6°F
April 2848°F48.7°F45.9°F51.8°F
April 2948.7°F49.5°F45.9°F51.8°F
April 3049.3°F49.8°F45.7°F52°F
Mastic water temp chart in April

Average water temperature in Mastic in April over a decade

20162017201820192020
46.4°F45.7°F43°F45.7°F46.4°F
20212022202320242025
46.6°F46.4°F47.5°F45.9°F45.3°F

Mastic sea state in April

Chart comparing the height of waves in Mastic 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 Mastic in April

Mastic 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
New York City47.5°F40.3°F54°F
Moriches Bay45.3°F37.8°F53.1°F
Smith Point45.3°F37.9°F53.1°F
Cupsogue Beach45.3°F38.1°F53.1°F
Mastic Beach45.3°F37.9°F53.1°F
West Hampton Dunes45.1°F37.9°F53.1°F
Bellport45.5°F37.8°F53.2°F
Flanders45.3°F36.7°F52.9°F
Bayport Beach45.9°F37.6°F53.8°F
Davis Park45.5°F37.8°F53.1°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 Mastic 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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