World sea water temperatures

Water temperature in Boston Harbor (MA) in January

Is it warm enough to swim in Boston Harbor in January? Average water temperature in Boston Harbor in January is 40.8°F and therefore is not suitable for comfortable swimming. The warmest sea in Boston Harbor in January is 45.9°F, and the coldest is 35.6°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Boston Harbor

Changes water temperature in Boston Harbor in January 2025, 2024

To get an accurate forecast for the water temperature in Boston Harbor for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Boston Harbor, 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 141.2°F42.8°F39.7°F45.9°F
January 240.6°F42.6°F40.5°F45.3°F
January 340.1°F43°F39.7°F45.1°F
January 440.3°F43°F39.4°F44.6°F
January 539°F41.7°F39°F44.4°F
January 639.9°F41.7°F39.7°F44.6°F
January 740.1°F41.9°F39.2°F44.4°F
January 840.1°F41°F39.2°F44.8°F
January 939.9°F41.4°F39°F44.4°F
January 1039°F41.2°F39°F44.8°F
January 1139.6°F41.4°F39.4°F43.9°F
January 1239°F41.2°F39°F43.7°F
January 1339°F41.5°F38.8°F43.7°F
January 1438.1°F41°F38.1°F43.7°F
January 1537.4°F41.2°F37.4°F43.7°F
Day 2025 2024 Min Max
January 1637.9°F41.4°F37.9°F43.2°F
January 1738.5°F39.9°F38.5°F42.6°F
January 1838.7°F40.5°F38.5°F43°F
January 1939°F40.3°F38.7°F43.2°F
January 2037.2°F40.3°F37.2°F43.2°F
January 2138.1°F40.1°F38.1°F43.3°F
January 2237.4°F40.5°F37.4°F43.5°F
January 2338.1°F40.6°F38.1°F43.7°F
January 2438.3°F40.5°F38.1°F43.5°F
January 2537.2°F40.3°F37.2°F43.2°F
January 2637.8°F40.3°F37.8°F43°F
January 2737.8°F40.1°F37.8°F43°F
January 2837.9°F40.1°F37.6°F42.8°F
January 2937.9°F40.1°F37.6°F42.6°F
January 3035.6°F39.9°F35.6°F42.3°F
January 3136.5°F39.7°F36.5°F42.1°F
Boston Harbor water temp chart in January

Average water temperature in Boston Harbor in January over a decade

20162017201820192020
42.8°F43.3°F40.1°F40.8°F40.5°F
20212022202320242025
40.1°F41.9°F40.8°F41°F38.7°F

Boston Harbor sea state in January

Chart comparing the height of waves in Boston Harbor in January 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 Boston Harbor in January

Boston Harbor 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
Carson Beach40.8°F35.2°F45.7°F
South Boston40.8°F35.2°F45.7°F
Wollaston Beach41.2°F36.3°F45.9°F
Dorchester41.2°F36.3°F45.9°F
Pleasure Bay40.8°F35.2°F45.7°F
Boston Harbor Islands41.2°F36.3°F45.9°F
Yirrell Beach41.2°F36.3°F45.9°F
Deer Island41.2°F36.3°F45.9°F
M Street Beach40.8°F35.2°F45.7°F
Constitution Beach40.8°F35.4°F45.7°F

Massachusetts photo gallery

  • Massachusetts
  • Massachusetts
  • Massachusetts
  • Black rock beach. Cohasset ma

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

Vote for Massachusetts best beach

Current rating: (0 votes cast)

If you know this place (Boston Harbor) and want to leave your comment or rate it, then fill out the following form.

Your rating for this place:

Does this place have a "Blue Flag" award [1], are there rip currents and what type of beach is it, sand or pebble:

Is the beach a dog-friendly place, child friendly or a nudist beach?


Your comments for this place (water quality, crowds, facilities, activities, lifeguards, service etc.):



[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.

Get widget or API for your website

Our report for Boston Harbor 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.

Contact us: admin@seatemperature.info
privacy policy