Water temperature in Indian River Inlet (DE) in October

Is it warm enough to swim in Indian River Inlet in October? Average water temperature in Indian River Inlet in October is 66°F and therefore is not suitable for comfortable swimming. The warmest water in Indian River Inlet in October is 74.7°F, and the coldest is 57.2°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Indian River Inlet

Changes water temperature in Indian River Inlet in October 2025, 2024

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

Average water temperature in Indian River Inlet in October over a decade

Chart comparing the height of waves in Indian River Inlet in October 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.

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

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

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Our report for Indian River Inlet 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.