Lynn — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Lynn (Massachusetts, United States). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Lynn help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Lynn in the Atlantic Ocean today is 15°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Lynn has risen over the last week and month. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Lynn will be 15.2°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 4 | 12.1°C | 12.3°C | |
| JUN 5 | 12.2°C | 12.8°C | |
| JUN 6 | 12.4°C | 13.8°C | |
| JUN 7 | 13.2°C | 14.0°C | |
| JUN 8 | 14.0°C | 13.8°C | |
| JUN 9 | 13.8°C | 14.8°C | |
| JUN 10 | 14.5°C | 14.8°C | |
| JUN 11 | 14.5°C | 14.8°C | |
| JUN 12 | 15.1°C | 14.8°C | 15.1°C |
| JUN 13 | 15.0°C | 15.1°C | |
| JUN 14 | 15.3°C | 15.1°C | |
| JUN 15 | 15.5°C | 15.2°C | |
| JUN 16 | 15.8°C | 15.2°C | |
| JUN 17 | 15.5°C | 15.2°C | |
| JUN 18 | 15.3°C | 15.2°C | |
| JUN 19 | 16.0°C | 15.2°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Lynn, on the Massachusetts coast along Massachusetts Bay, experiences a pronounced seasonal cycle in coastal water temperatures driven by cold New England winters and relatively mild summers. Typical winter water temperatures along the Lynn shore usually hover between 0°C and 4°C, with the coldest readings occurring in January and February. As spring progresses, surface temperatures generally rise from about 4°C in early March to around 10–12°C by late May. Summer brings the warmest conditions, with nearshore waters most often ranging from roughly 15°C to 22°C in June through August, peaking in late July and August. In autumn the water cools again, commonly falling to between 8°C and 16°C from September through November. Local conditions can vary day to day with tides, wind, and offshore currents, so observed temperatures at the shoreline may differ from broader regional averages.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 3°C | 5°C | 7°C |
| February | 2°C | 4°C | 6°C |
| March | 2°C | 4°C | 6°C |
| April | 4°C | 6°C | 9°C |
| May | 6°C | 10°C | 15°C |
| June | 10°C | 15°C | 21°C |
| July | 15°C | 19°C | 24°C |
| August | 16°C | 20°C | 23°C |
| September | 14°C | 18°C | 21°C |
| October | 9°C | 16°C | 18°C |
| November | 7°C | 11°C | 15°C |
| December | 4°C | 8°C | 11°C |
* Click on a month to view detailed water temperature data.
Lynn: Weather Forecast
June 13
June 14
June 15
June 16
Location, Beaches & Local Information
Nearby Beaches & Facilities
King's Beach
Kings Beach
Lynn Beach
King's Beach / Lynn Beach
Kings
Fisherman's
Nahant Beach
Fishermans Beach
Whales
Swimming Conditions
Swimming and beach recreation in Lynn are concentrated around its public shore reservations and small sandy stretches that open to Massachusetts Bay. During the summer months, when water temperatures are at their warmest, beaches attract families, sunbathers, paddleboarders and casual swimmers, and seasonal lifeguard services and facilities are typically available at the more popular access points. Cooler spring and autumn days still offer opportunities for brisk shoreline walks, tidepooling and water sports for those in wetsuits or participating in organized open-water swims, while winter swimming is uncommon except for experienced cold-water enthusiasts. Visitors should be mindful of changing currents, colder water than air temperatures suggest, and posted advisories before entering the water.