Sea Temperature in Port Jefferson in May

Complete information on the sea temperature range in the Atlantic Ocean in Port Jefferson in May. Historical daily data. Climate details for May. 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 May

46°F

MINIMUN

55°F

AVERAGE

63°F

MAXIMUM

Historical Data of Water Temperature in May in Port Jefferson

Water Temperature Chart for Atlantic Ocean in Port Jefferson in May

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

Day	2024	2023	2022	Average
May 1	50°C	46°C	46°C	48°C
May 2	50°C	48°C	48°C	49°C
May 3	50°C	48°C	48°C	49°C
May 4	52°C	48°C	48°C	50°C
May 5	52°C	48°C	50°C	51°C
May 6	52°C	48°C	50°C	51°C
May 7	52°C	50°C	50°C	51°C
May 8	52°C	48°C	50°C	51°C
May 9	52°C	48°C	52°C	51°C
May 10	52°C	48°C	52°C	51°C
May 11	52°C	48°C	52°C	51°C
May 12	54°C	48°C	54°C	52°C
May 13	54°C	48°C	54°C	52°C
May 14	55°C	50°C	54°C	53°C
May 15	54°C	50°C	55°C	53°C
May 16	55°C	50°C	55°C	53°C
May 17	57°C	52°C	55°C	55°C
May 18	55°C	52°C	55°C	54°C
May 19	57°C	52°C	57°C	55°C
May 20	57°C	52°C	59°C	55°C
May 21	59°C	52°C	59°C	56°C
May 22	59°C	52°C	57°C	56°C
May 23	61°C	52°C	57°C	57°C
May 24	61°C	52°C	59°C	57°C
May 25	61°C	52°C	59°C	58°C
May 26	61°C	54°C	59°C	58°C
May 27	61°C	54°C	59°C	59°C
May 28	61°C	55°C	59°C	59°C
May 29	59°C	55°C	59°C	59°C
May 30	57°C	55°C	59°C	58°C

Port Jefferson Climate and Swimming Opportunities in May

68°F

Average Day Air Temperature

48°F

Average Night Air Temperature

4 in

Precipitation Amount per Month

11 days

Number of Rainy Days

14 hrs

Daylight
per Day

9 hrs

Sunshine
per Day

9 mph

Average Wind Speed

69%

Average
humidity

Port Jefferson lies within the New York in United States. The average daytime temperature in Port Jefferson in May is 68°F (20°C), while the nighttime average is 49°F (9°C). There are typically 11 rainy days during the month, with a total precipitation of 3.6 inches (91 mm). The daylight duration in May in Port Jefferson is 14 hours, with an average of 9 hours of sunshine per day. The average wind speed in May is 9 mph (15 km/h), and the humidity level is around 69%.

The water temperature in Port Jefferson in May ranges from 48°F to 59°F (9°C to 15°C). At the beginning of the month, the average temperature is around 50°F (10°C), shifting to 52°F (11°C) by mid-May and reaching 57°F (14°C) in the last ten days. Overall, the average sea temperature in Port Jefferson for May is 54°F (12°C). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Sea Temperature in May in Nearby Cities

Frequently Asked Questions About Water Temperatures in May in Port Jefferson

What is the sea temperature in Port Jefferson in May?

The water temperature in the Atlantic Ocean in Port Jefferson in May ranges from 48°F to 59°F (9°C to 15°C).

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

The average sea temperature in Port Jefferson in May is 54°F (12°C), and the air temperature is 68°F (20°C), so ideal conditions for a refreshing swim, though some may still find it a bit cool.