Monthly weather forecast and climate
Setauket- East Setauket, NY

Weather in January

In Setauket- East Setauket, New York, the average seawater temperature in January is 42.3°F (5.7°C). Note: Swimming in 42.3°F (5.7°C) is considered dangerous. Weather in January »

Weather in February

February is the month with the coldest seawater in Setauket- East Setauket, New York, with an average ocean temperature of 39.7°F (4.3°C). Note: For swimming, this is considered life-threatening and very dangerous. Weather in February »

Weather in March

In Setauket- East Setauket, New York, in March, the average water temperature is 40.5°F (4.7°C). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in March »

Weather in April

In Setauket- East Setauket, New York, the average seawater temperature in April is 45.3°F (7.4°C). Note: Swimming in 45.3°F (7.4°C) is considered life-threatening. Weather in April »

Weather in May

In Setauket- East Setauket, New York, the average seawater temperature in May is 53.4°F (11.9°C). Note: Swimming in 53.4°F (11.9°C) is considered life-threatening. Weather in May »

Weather in June

In Setauket- East Setauket, New York, in June, the average water temperature is 64.6°F (18.1°C). Note: For most, swimming in 64.6°F (18.1°C) is not an enjoyable activity. Weather in June »

Weather in July

In July, the average ocean temperature in Setauket- East Setauket, New York, is 72.1°F (22.3°C). Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 72.1°F (22.3°C) water. Weather in July »

Weather in August

With an average ocean temperature of 73.9°F (23.3°C), August is the month with the warmest seawater in Setauket- East Setauket, New York. Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73.9°F (23.3°C) water may be enjoyable. Weather in August »

Weather in September

In Setauket- East Setauket, New York, in September, the average water temperature is 69.6°F (20.9°C). Note: Swimming in 69.6°F (20.9°C) is not enjoyable for the majority. Weather in September »

Weather in October

In Setauket- East Setauket, New York, in October, the average water temperature is 63.7°F (17.6°C). Note: For most, swimming in 63.7°F (17.6°C) is not an enjoyable activity. Weather in October »

Weather in November

In Setauket- East Setauket, New York, the average seawater temperature in November is 55.6°F (13.1°C). Note: Swimming in 55.6°F (13.1°C) is considered dangerous. Weather in November »

Weather in December

In Setauket- East Setauket, New York, the average seawater temperature in December is 48.9°F (9.4°C). Note: Swimming in 48.9°F (9.4°C) is considered dangerous. Weather in December »
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FAQ

When is the ocean coldest in Setauket- East Setauket?

The month with the coldest seawater is February, with an average ocean temperature of 39.7°F (4.3°C).

When are the longest days in Setauket- East Setauket?

The month with the longest days is June, with an average of 15.1h of daylight.

What month is the ocean warmest in Setauket- East Setauket?

With an average ocean temperature of 73.9°F (23.3°C), August is the month with the warmest seawater in Setauket- East Setauket.

What is the month with the shortest days in Setauket- East Setauket?

December has the shortest days of the year, with an average of 9.3h of daylight.

Average sea temperature
Setauket- East Setauket, NY

Average sea temperature - Setauket- East Setauket, NY

The best month for swimming (with the highest average sea temperature) is August (74°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

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Average daylight
Setauket- East Setauket, NY

Average daylight - Setauket- East Setauket, NY

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

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