Weather in January
In January, the average ocean temperature in Mystic Island, New Jersey, is 43.3°F (6.3°C). Note: Being in 43.3°F (6.3°C) waters at 55.4°F (13°C) is discomforting, but anything below 50°F (10°C) can jeopardize breathing and induce cold shock, factoring in physical endurance. Weather in January »
Weather in February
The month with the coldest seawater in Mystic Island, New Jersey, is February, with an average ocean temperature of 40.8°F (4.9°C). Note: In swimming situations, the extreme cold and danger can lead to fatality. Weather in February »
Weather in March
In Mystic Island, New Jersey, the average seawater temperature in March is 41.2°F (5.1°C). Note: To swim in 41.2°F (5.1°C) at less than 50°F (10°C), ensure you're well-protected. Weather in March »
Weather in April
In Mystic Island, New Jersey, in April, the average water temperature is 46.6°F (8.1°C). Note: Dipping into 46.6°F (8.1°C) below 50°F (10°C) needs protective wear, or you'd face cold shock and breathing issues swiftly. Weather in April »
Weather in May
In Mystic Island, New Jersey, in May, the average water temperature is 54.9°F (12.7°C). Note: Swimming at temperatures less than 50°F (10°C) in 54.9°F (12.7°C) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. Weather in May »
Weather in June
In Mystic Island, New Jersey, the average seawater temperature in June is 66.2°F (19°C). Note: Most people find swimming in 66.2°F (19°C) to be not enjoyable. Weather in June »
Weather in July
In July, the average ocean temperature in Mystic Island, New Jersey, is 73.4°F (23°C). Note: Factoring in a person's dislike for cold, combined with conditions like sunshine, wind, and temperature, a dip in 73.4°F (23°C) waters might be satisfying. Weather in July »
Weather in August
The month with the warmest seawater in Mystic Island, New Jersey, is August, with an average ocean temperature of 75.7°F (24.3°C). Note: A swim in 75.7°F (24.3°C) waters can be refreshing, especially when factoring in a person's cold tolerance, sunshine, wind, and the overall temperature. Weather in August »
Weather in September
In Mystic Island, New Jersey, in September, the average water temperature is 71.2°F (21.8°C). Note: For most individuals, swimming in 71.2°F (21.8°C) is not a pleasant experience. Weather in September »
Weather in October
In Mystic Island, New Jersey, in October, the average water temperature is 64.8°F (18.2°C). Note: In water with a temperature of 64.8°F (18.2°C), most individuals do not find swimming enjoyable. Weather in October »
Weather in November
In Mystic Island, New Jersey, the average seawater temperature in November is 55.8°F (13.2°C). Note: Dipping into 55.8°F (13.2°C) below 50°F (10°C) needs protective wear, or you'd face cold shock and breathing issues swiftly. Weather in November »
Weather in December
In December, the average ocean temperature in Mystic Island, New Jersey, is 48.6°F (9.2°C). Note: Diving into 48.6°F (9.2°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation. Weather in December »
Updated: Aug 29, 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
What is the month with the coldest ocean?
February is the month with the coldest seawater, with an average ocean temperature of 40.8°F (4.9°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?
With an average of 14h and 54min of daylight, June has the longest days of the year.
When is the ocean warmest?
The month with the warmest seawater is August, with an average ocean temperature of 75.7°F (24.3°C).
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average sea temperature
Mystic Island, NJ
The best month for swimming (with the highest average sea temperature) is August (75.8°F).
The coldest month (with the lowest average sea temperature) is February (40.8°F).
Average daylight
Mystic Island, NJ
- Average daylight in January:
9h and 5min - 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 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
Mystic Island, New Jersey, USA
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