World sea water temperatures

Water temperature in Johnston Atoll in April

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Is it warm enough to swim in Johnston Atoll in April? Average water temperature in Johnston Atoll in April is 78.8°F and therefore suitable for comfortable swimming. The warmest sea in Johnston Atoll in April is 81.1°F, and the coldest is 77°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Johnston Atoll

Changes water temperature in Johnston Atoll in April 2025, 2024

To get an accurate forecast for the water temperature in Johnston Atoll for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Johnston Atoll, 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 179.7°F78.6°F77°F79.7°F
April 279.7°F78.6°F78.4°F80.1°F
April 379.7°F78.6°F78.3°F79.7°F
April 479.3°F78.6°F77.2°F80.2°F
April 579.3°F78.4°F77.2°F80.1°F
April 679.9°F78.1°F77.4°F80.8°F
April 779.7°F78.3°F77.2°F81.1°F
April 879.5°F78.3°F77.4°F81.1°F
April 979.7°F78.3°F77.5°F81°F
April 1079.7°F78.4°F77.5°F80.4°F
April 1179.7°F78.4°F77.5°F79.9°F
April 1279.7°F79°F77.5°F79.9°F
April 1379.5°F79°F77.5°F79.9°F
April 1479.7°F78.8°F77.7°F79.7°F
April 1579.9°F78.8°F77.4°F80.1°F
Day 2025 2024 Min Max
April 1679.9°F79°F78.3°F79.9°F
April 1779.9°F78.6°F77.2°F80.6°F
April 1880.1°F78.8°F77.2°F80.1°F
April 1980.1°F78.8°F77.5°F80.2°F
April 2080.1°F78.8°F78.1°F80.1°F
April 2180.2°F78.8°F77.5°F80.2°F
April 2280.2°F78.8°F77.2°F80.2°F
April 2380.2°F78.8°F77.4°F80.2°F
April 2480.8°F79.2°F77.4°F80.8°F
April 2580.6°F78.8°F77.2°F80.6°F
April 2681°F78.8°F77°F81°F
April 2781°F79°F77.4°F81°F
April 2881°F79°F78.1°F81°F
April 2980.8°F79.2°F77.5°F80.8°F
April 3080.8°F79.3°F77.5°F80.8°F
Johnston Atoll water temp chart in April

Average water temperature in Johnston Atoll in April over a decade

20162017201820192020
78.3°F79.5°F79.7°F77.7°F78.8°F
20212022202320242025
78.8°F79.2°F79.7°F78.8°F80.1°F

Johnston Atoll 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

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Our report for Johnston Atoll 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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