Weather in January
In Ocean Bluff-Brant Rock, Massachusetts, the average seawater temperature in January is 41.5°F (5.3°C). Note: With the appropriate swimsuit, one can swim in 41.5°F (5.3°C) even if temperatures dip below 50°F (10°C); otherwise, be ready for cold shock and breath issues. Weather in January »
Weather in February
February and March, with an average ocean temperature of 38.8°F (3.8°C), are months with the coldest seawater in Ocean Bluff-Brant Rock, Massachusetts. Note: When swimming, this is deemed life-endangering and extremely risky. Weather in February »
Weather in March
February and March, with an average ocean temperature of 38.8°F (3.8°C), are months with the coldest seawater in Ocean Bluff-Brant Rock, Massachusetts. Note: In the activity of swimming, this is perceived as lethal and exceedingly dangerous. Weather in March »
Weather in April
In Ocean Bluff-Brant Rock, Massachusetts, in April, the average water temperature is 43.2°F (6.2°C). Note: It is advised against swimming in 43.2°F (6.2°C) when it drops below 50°F (10°C). Weather in April »
Weather in May
In Ocean Bluff-Brant Rock, Massachusetts, in May, the average water temperature is 49.1°F (9.5°C). Note: Dipping into 49.1°F (9.5°C) below 50°F (10°C) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Weather in May »
Weather in June
In Ocean Bluff-Brant Rock, Massachusetts, in June, the average water temperature is 58.3°F (14.6°C). Note: Caution: 58.3°F (14.6°C) temperatures below 50°F (10°C) during swimming can result in intense cold shock and quickened breathing. Weather in June »
Weather in July
In Ocean Bluff-Brant Rock, Massachusetts, in July, the average water temperature is 65.8°F (18.8°C). Note: The majority of individuals do not enjoy swimming in water that is 65.8°F (18.8°C). Weather in July »
Weather in August
August is the month with the warmest seawater in Ocean Bluff-Brant Rock, Massachusetts, with an average ocean temperature of 67.6°F (19.8°C). Note: A majority do not enjoy swimming in water at 67.6°F (19.8°C). Weather in August »
Weather in September
In September, the average ocean temperature in Ocean Bluff-Brant Rock, Massachusetts, is 64°F (17.8°C). Note: For the majority, swimming in water with a temperature of 64°F (17.8°C) is not enjoyable. Weather in September »
Weather in October
In Ocean Bluff-Brant Rock, Massachusetts, the average seawater temperature in October is 58.1°F (14.5°C). Note: With an efficient thermal swimsuit, one can navigate 58.1°F (14.5°C) even if it's colder than 50°F (10°C); otherwise, rapid cold shock and breathlessness might set in. Weather in October »
Weather in November
In Ocean Bluff-Brant Rock, Massachusetts, the average seawater temperature in November is 51.4°F (10.8°C). Note: You can swim in 51.4°F (10.8°C) below 50°F (10°C) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. Weather in November »
Weather in December
In December, the average ocean temperature in Ocean Bluff-Brant Rock, Massachusetts, is 46.2°F (7.9°C). Note: Swimming in 46.2°F (7.9°C) is deemed hazardous. Weather in December »
Updated: Aug 2, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
When is the ocean coldest in Ocean Bluff-Brant Rock?
The months with the coldest seawater are February and March, with an average ocean temperature of 38.8°F (3.8°C).
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
What is the month with the warmest ocean?
With an average ocean temperature of 67.6°F (19.8°C), August is the month with the warmest seawater.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average sea temperature
Ocean Bluff-Brant Rock, MA
The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight
Ocean Bluff-Brant Rock, MA
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
Ocean Bluff-Brant Rock, Massachusetts, USA
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