All data are in degrees Fahrenheit

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Water temperature in Boston

Detailed information about the current water temperature in Boston. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Boston now

86.3

°F

May 10, 01:03

Trend:

stable

Yesterday:

86.2°F

Tomorrow:

86.3°F

Sunrise:

05:18

Sunset:

17:45

Day Length:

12 h. 27 min.

Boston in May

Minimum:

81.7°F

Average:

82.8°F

Maximum:

83.8°F

Sea water temperature in Boston today

As of now, in Boston, the water temperature is 86.3°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 1.2°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 86.2°F on 2023, while the historical minimum was 83.9°F on 2022.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 86.4°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Boston

Date Current Year

actual* / forecast**

last year 10 years average
Apr 26 85.5°F 85.4°F 84.6°F
Apr 27 85.3°F 86.0°F 84.6°F
Apr 28 85.0°F 85.1°F 84.4°F
Apr 29 85.8°F 85.0°F 84.7°F
Apr 30 85.6°F 84.8°F 84.8°F
May 1 85.6°F 84.8°F 84.8°F
May 2 85.8°F 84.9°F 84.9°F
May 3 85.7°F 84.6°F 84.9°F
May 4 85.5°F 85.0°F 84.8°F
May 5 85.6°F 85.4°F 85.1°F
May 6 85.5°F 85.2°F 84.9°F
May 7 85.5°F 85.0°F 85.1°F
May 8 85.4°F 84.8°F 85.0°F
May 9 86.2°F 85.2°F 85.0°F
May 10 86.3°F 85.9°F 85.1°F
May 11 86.3°F 85.9°F 85.1°F
May 12 86.3°F 85.9°F 85.1°F
May 13 86.4°F 86.0°F 85.2°F
May 14 86.3°F 86.0°F 85.1°F
May 15 86.4°F 85.8°F 85.2°F
May 16 86.5°F 86.3°F 85.3°F
May 17 86.5°F 85.8°F 85.3°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Boston by month

In Boston, the water temperature is comfortable for swimming all year round.
The warmest water in Boston was recorded on October 19, 2024, reaching a 87.6°F. While the coldest temperature occurred on February 10, 2019, dipping to 79.9°F. The average readings by season are 82.9°F in Winter, 84.0°F in Spring, 85.5°F in Summer, and 85.2°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Santa Maria 86.5°F 10mi
Barcelona 86.2°F 20mi
Santiago 86.2°F 43mi
Tarragona 85.8°F 57mi
La Paz 84.5°F 58mi
Davao 85.3°F 75mi

* current water temperature in this city

** straight line distance from Boston