World sea water temperatures

Water temperature in Oshkosh (WI) in April

Is it warm enough to swim in Oshkosh in April? Average water temperature in Oshkosh in April is 43.2°F and therefore is not suitable for comfortable swimming. The warmest water in Oshkosh in April is 53.6°F, and the coldest is 33.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Oshkosh

Changes water temperature in Oshkosh in April 2025, 2024

To get an accurate forecast for the water temperature in Oshkosh for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Oshkosh, 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 137.9°F39.2°F34.3°F40.6°F
April 237.9°F39°F33.8°F40.3°F
April 338.8°F38.8°F34°F40.3°F
April 438.7°F38.8°F34.3°F41.4°F
April 538.7°F39.9°F34.5°F41.7°F
April 639.4°F39.7°F34.7°F42.4°F
April 741°F41.2°F35.1°F42.6°F
April 840.1°F40.8°F35.6°F44.1°F
April 940.5°F42.1°F36°F43.9°F
April 1040.8°F42.6°F36.1°F44.1°F
April 1141°F42.8°F36.5°F44.2°F
April 1242.6°F43.3°F37.2°F45.7°F
April 1342.6°F46°F38.1°F48.9°F
April 1443.3°F48.6°F38.3°F48.6°F
April 1543.5°F49.6°F37°F49.6°F
Day 2025 2024 Min Max
April 1643.5°F51.4°F37.4°F51.4°F
April 1748°F50.7°F37.9°F50.7°F
April 1848.9°F50°F38.1°F50°F
April 1948.6°F51.8°F38.5°F51.8°F
April 2049.6°F51.1°F39.6°F51.1°F
April 2149.8°F50.2°F41.2°F50.2°F
April 2249.6°F49.5°F43.2°F50.9°F
April 2349.1°F49.8°F43.3°F51.4°F
April 2449.6°F50.2°F44.1°F52.2°F
April 2550.2°F49.5°F45°F52.5°F
April 2650°F51.3°F45.7°F53.1°F
April 2749.1°F50.4°F44.1°F52.9°F
April 2851.1°F50.5°F44.8°F52.7°F
April 2953.2°F50.7°F45.3°F53.6°F
April 3053.6°F52°F45.9°F53.6°F
Oshkosh water temp chart in April

Average water temperature in Oshkosh in April over a decade

20162017201820192020
43.5°F45.9°F41.5°F42.3°F43°F
20212022202320242025
46.2°F40.8°F40.6°F46.4°F45°F

Oshkosh sea state in April

Chart comparing the height of waves in Oshkosh 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 Oshkosh in April

Oshkosh 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
Sheboygan37.8°F32.7°F43.2°F
Green Bay40.5°F31.6°F52°F
Cedar Grove37.8°F32.5°F43.9°F
Kohler Andrae37.6°F32.7°F42.8°F
Two Rivers37.6°F32.5°F43.3°F
Harrington Beach37.6°F32.5°F43.7°F
Suamico40.3°F31.8°F51.6°F
Port Washington37.8°F32.4°F43.5°F
Kewaunee37.8°F32.5°F44.2°F
Whitefish Bay38.8°F33.1°F45.9°F

Wisconsin photo gallery

  • North of Oak Creek Power Plant (zoom to see it's smoke stacks)
  • Green Flash seen from Bradford Beach

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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 Oshkosh 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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