World sea water temperatures

Water temperature in Walnut Beach (CT) in January

Is it warm enough to swim in Walnut Beach in January? Average water temperature in Walnut Beach in January is 39.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Walnut Beach in January is 47.8°F, and the coldest is 34.2°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Walnut Beach

Changes water temperature in Walnut Beach in January 2025, 2024

To get an accurate forecast for the water temperature in Walnut 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 Walnut Beach, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of January.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
January 143.3°F44.4°F39.6°F47.8°F
January 243°F44.8°F39.4°F47.5°F
January 342.6°F44.4°F40.1°F47.5°F
January 442.6°F45.3°F38.5°F46.4°F
January 541.7°F45°F37.8°F45.5°F
January 641.5°F44.2°F38.1°F45.3°F
January 741°F44.1°F41°F44.1°F
January 839.7°F43.9°F37.6°F45°F
January 940.6°F43.2°F36.7°F44.4°F
January 1039.4°F44.1°F37.2°F45.9°F
January 1139.7°F43.9°F36°F44.8°F
January 1238.8°F43.3°F36.3°F44.1°F
January 1339.2°F45°F36.1°F45°F
January 1438.7°F43.3°F36°F43.9°F
January 1538.3°F43°F35.6°F43°F
Day 2025 2024 Min Max
January 1637.9°F41.9°F35.1°F42.1°F
January 1737.6°F41.7°F35.1°F42.3°F
January 1836.7°F41.7°F34.3°F42.3°F
January 1937.2°F41.4°F34.3°F42.3°F
January 2037.4°F39.7°F34.7°F42.6°F
January 2136.9°F39.7°F36.5°F42.4°F
January 2235.4°F39.7°F35.4°F41.7°F
January 2335.8°F38.7°F35.6°F41.4°F
January 2435.8°F38.5°F35.2°F41°F
January 2535.4°F38.5°F35.4°F41.4°F
January 2635.8°F38.5°F35.2°F40.8°F
January 2736°F38.3°F34.9°F41.7°F
January 2835.6°F38.1°F34.7°F41.4°F
January 2936.5°F37.9°F34.5°F40.8°F
January 3035.8°F37.9°F34.2°F41.7°F
January 3135.6°F37.8°F34.3°F39.4°F
Walnut Beach water temp chart in January

Average water temperature in Walnut Beach in January over a decade

20162017201820192020
42.6°F40.8°F36.3°F39.6°F40.5°F
20212022202320242025
41°F40.8°F41°F41.7°F38.5°F

Walnut 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 January?

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

AvrMinMax
Wildermere Beach39.9°F34.2°F47.8°F
Silver Sands39.9°F34.2°F47.8°F
Jennings Beach39.9°F34.2°F47.8°F
East Setauket39.9°F34.2°F48°F
Stony Brook39.9°F34.2°F48°F
Mount Sinai40.1°F34.2°F48°F
Port Jefferson40.1°F34.2°F48°F
Shoreham40.1°F34.3°F48.6°F
Westport39.9°F34°F47.8°F
Compo Beach39.9°F34°F47.8°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 Walnut 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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