Weymouth — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Weymouth (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 Weymouth help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Weymouth in the Atlantic Ocean today is 18°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
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 Weymouth 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 Weymouth will be 17.7°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 25 | 15.2°C | 8.5°C | |
| JUN 26 | 15.4°C | 8.8°C | |
| JUN 27 | 16.0°C | 12.3°C | |
| JUN 28 | 15.9°C | 12.3°C | |
| JUN 29 | 16.0°C | 11.8°C | |
| JUN 30 | 17.1°C | 17.0°C | |
| JUL 1 | 17.3°C | 18.3°C | |
| JUL 2 | 17.8°C | 18.3°C | |
| JUL 3 | 18.3°C | 18.3°C | 18.3°C |
| JUL 4 | 17.8°C | 18.2°C | |
| JUL 5 | 17.3°C | 18.1°C | |
| JUL 6 | 18.3°C | 18.1°C | |
| JUL 7 | 18.3°C | 18.0°C | |
| JUL 8 | 18.0°C | 17.9°C | |
| JUL 9 | 17.5°C | 17.8°C | |
| JUL 10 | 17.8°C | 17.7°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
Weymouth is a coastal town on Massachusetts Bay just south of Boston, with a shoreline that includes sandy beaches, rocky points and sheltered coves. Water temperatures there follow the typical New England pattern, rising slowly through spring and peaking in late summer. In winter the bay often sits around 0–3 °C, warming to roughly 3–8 °C in early spring and 8–13 °C by late spring. Summer sees the warmest conditions, commonly ranging from 15–22 °C with the warmest readings in July and August. As autumn arrives temperatures fall again, generally moving from about 12–18 °C in early fall to single figures by late fall and into winter.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 2°C | 5°C | 8°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 | 20°C |
| July | 15°C | 19°C | 22°C |
| August | 17°C | 20°C | 24°C |
| September | 15°C | 18°C | 22°C |
| October | 9°C | 16°C | 19°C |
| November | 7°C | 11°C | 15°C |
| December | 4°C | 7°C | 10°C |
* Click on a month to view detailed water temperature data.
Weymouth: Weather Forecast
July 4
July 5
July 6
July 7
Location, Beaches & Local Information
Nearby Beaches & Facilities
North
Wessagusett
Wessagusset Beach
Germantown Firestation
George Lane Beach
Edgewater
Mound Street Beach
Avalon Beach
Smith Beach
Swimming Conditions
Swimming and beach holidays in Weymouth are therefore very seasonal. The most comfortable open-water swimming for most people is concentrated in July and August when water temperatures reach the mid to high teens and occasionally low twenties °C; seasonal lifeguards and beach amenities are typically available during this period. Shoulder seasons can still offer pleasant days for wading or short dips, but water around 10–15 °C often prompts the use of wetsuits for longer swims. Tidal currents, wind-driven conditions and variable water clarity can affect the experience, so local advisories and tide information are useful. For those seeking warmer options outside peak summer, municipal pools and indoor aquatic centers provide alternatives while the coastline offers scenic settings for beach walks, boating and shoreline recreation.