World sea water temperatures

Water temperature in Greenwich (CT) in December

Is it warm enough to swim in Greenwich in December? Average water temperature in Greenwich in December is 45.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Greenwich in December is 53.2°F, and the coldest is 39.2°F. Average high air temperature in Greenwich in December is 41°F, and average low temperature is 27°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Greenwich

Changes water temperature in Greenwich in December 2024, 2023

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

You can choose any other years:

Year 1:   Year 2:


Day 2024 2023 Min Max
December 151.3°F50°F45.5°F53.2°F
December 251.6°F49.6°F45.7°F52.5°F
December 351.3°F49.5°F46°F51.8°F
December 450.9°F49.6°F46°F51.3°F
December 549.1°F48.7°F45.1°F50.7°F
December 650.2°F48.7°F45°F50.9°F
December 749.1°F48.7°F44.8°F51.3°F
December 847.7°F48°F44.2°F50.7°F
December 947.3°F46.6°F43.5°F50.4°F
December 1047.1°F46.6°F43.2°F50.2°F
December 1147.1°F47.7°F42.8°F50.4°F
December 1247.1°F47.8°F42.4°F50.2°F
December 1346.4°F47.3°F42.4°F50.2°F
December 1446°F46.8°F42.1°F50.4°F
December 1545.1°F47.1°F41.5°F51.4°F
Day 2024 2023 Min Max
December 1644.8°F46.4°F41.5°F50.9°F
December 1745.9°F46.2°F42.1°F50.2°F
December 1845.1°F46.9°F42.1°F49.6°F
December 1945.3°F46.8°F41.4°F48.7°F
December 2045°F46.2°F40.8°F48.7°F
December 2144.1°F46°F41.2°F48.7°F
December 2244.2°F45.3°F41°F48.6°F
December 2343.5°F45°F39.7°F48.4°F
December 2443.7°F45.3°F39.2°F49.3°F
December 2541.4°F44.2°F39.4°F49.1°F
December 2641.7°F43.9°F39.2°F49.1°F
December 2741.4°F43.7°F39.4°F49.3°F
December 2841.4°F43.5°F39.9°F49.1°F
December 2942.4°F45.1°F39.2°F49.1°F
December 3042.8°F45.1°F39.7°F48.7°F
December 3142.4°F44.8°F39.9°F48.7°F
Greenwich water temp chart in December

Average water temperature in Greenwich in December over a decade

20152016201720182019
49.8°F46.8°F47.5°F43°F43.9°F
20202021202220232024
46.9°F47.7°F45.5°F46.8°F45.9°F

Greenwich sea state in December

Chart comparing the height of waves in Greenwich in December 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 Greenwich in December

Weather and climate in Greenwich in December

This data display average monthly climate indicators in Greenwich in December based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature41°F
  • Average LOW temperature27°F
  • Average rainfall109mm/4.3''
  • Average snowfall132mm/5.2''

Greenwich 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 December?

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

AvrMinMax
Port Chester45.9°F39°F53.2°F
Old Greenwich46°F39.4°F52.9°F
Larchmont45.7°F38.7°F53.6°F
Glenwood Landing45.7°F38.7°F53.4°F
Sea Cliff45.7°F38.7°F53.4°F
Rye Beach45.7°F38.7°F53.4°F
Hempstead Harbor45.9°F39°F53.2°F
Rye45.9°F39°F53.2°F
Glen Cove45.9°F39°F53.2°F
Bayville45.9°F39.2°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 Greenwich 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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