Sea Temperature in Port Jefferson in March

Complete information on the sea temperature range in the Atlantic Ocean in Port Jefferson in March. Historical daily data. Climate details for March. Tips on swimming conditions and beach relaxation in Port Jefferson. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Port Jefferson in March

36°F

MINIMUN

40°F

AVERAGE

45°F

MAXIMUM

Historical Data of Water Temperature in March in Port Jefferson

Water Temperature Chart for Atlantic Ocean in Port Jefferson in March

Sea Temperature Table in Port Jefferson in March Over the Past Years

Day	2024	2023	2022	Average
Mar 1	37°C	41°C	37°C	39°C
Mar 2	39°C	41°C	37°C	40°C
Mar 3	39°C	41°C	37°C	40°C
Mar 4	37°C	41°C	37°C	39°C
Mar 5	37°C	43°C	37°C	40°C
Mar 6	39°C	43°C	37°C	40°C
Mar 7	39°C	43°C	39°C	41°C
Mar 8	37°C	43°C	39°C	40°C
Mar 9	37°C	43°C	39°C	40°C
Mar 10	37°C	43°C	39°C	41°C
Mar 11	37°C	43°C	39°C	41°C
Mar 12	37°C	43°C	39°C	41°C
Mar 13	39°C	43°C	41°C	41°C
Mar 14	39°C	43°C	41°C	42°C
Mar 15	39°C	43°C	41°C	42°C
Mar 16	39°C	43°C	41°C	42°C
Mar 17	37°C	43°C	41°C	41°C
Mar 18	39°C	43°C	41°C	42°C
Mar 19	37°C	45°C	43°C	42°C
Mar 20	39°C	43°C	43°C	42°C
Mar 21	39°C	45°C	43°C	42°C
Mar 22	41°C	45°C	43°C	43°C
Mar 23	41°C	43°C	43°C	42°C
Mar 24	41°C	43°C	43°C	42°C
Mar 25	41°C	45°C	45°C	44°C
Mar 26	43°C	43°C	45°C	44°C
Mar 27	43°C	45°C	45°C	43°C
Mar 28	43°C	45°C	45°C	43°C
Mar 29	43°C	45°C	45°C	43°C
Mar 30	43°C	45°C	45°C	44°C

Port Jefferson Climate and Swimming Opportunities in March

48°F

Average Day Air Temperature

30°F

Average Night Air Temperature

5 in

Precipitation Amount per Month

11 days

Number of Rainy Days

12 hrs

Daylight
per Day

7 hrs

Sunshine
per Day

11 mph

Average Wind Speed

65%

Average
humidity

Port Jefferson lies within the New York in United States. The average daytime temperature in Port Jefferson in March is 48°F (9°C), while the nighttime average is 31°F (-1°C). There are typically 11 rainy days during the month, with a total precipitation of 4.6 inches (117 mm). The daylight duration in March in Port Jefferson is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in March is 11 mph (18 km/h), and the humidity level is around 65%.

The water temperature in Port Jefferson in March ranges from 39°F to 43°F (4°C to 6°C). At the beginning of the month, the average temperature is around 39°F (4°C), shifting to 41°F (5°C) by mid-March and reaching 43°F (6°C) in the last ten days. Overall, the average sea temperature in Port Jefferson for March is 41°F (5°C). The water is freezing, and the air is still very cold. Even a brief dip can be risky. A wetsuit is highly recommended.

Sea Temperature in March in Nearby Cities

Frequently Asked Questions About Water Temperatures in March in Port Jefferson

What is the sea temperature in Port Jefferson in March?

The water temperature in the Atlantic Ocean in Port Jefferson in March ranges from 39°F to 43°F (4°C to 6°C).

Is it possible to swim in the Atlantic Ocean in Port Jefferson in March?

The average sea temperature in Port Jefferson in March is 41°F (5°C), and the air temperature is 48°F (9°C), so the water is freezing, and the air is still very cold. Even a brief dip can be risky. A wetsuit is highly recommended.