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Sea Temperature in Nantucket in September

Complete information on the sea temperature range in the Atlantic Ocean in Nantucket in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Nantucket. 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 Nantucket in September

61°F

MINIMUN

68°F

AVERAGE

75°F

MAXIMUM

Historical Data of Water Temperature in September in Nantucket

Water Temperature Chart for Atlantic Ocean in Nantucket in September

Sea Temperature Table in Nantucket in September Over the Past Years

Day202420232022Average
Sep 173°C70°C68°C70°C
Sep 273°C70°C64°C69°C
Sep 372°C70°C63°C69°C
Sep 470°C70°C68°C70°C
Sep 572°C72°C63°C69°C
Sep 672°C70°C63°C69°C
Sep 772°C72°C63°C69°C
Sep 870°C72°C64°C69°C
Sep 970°C72°C66°C69°C
Sep 1070°C72°C64°C69°C
Sep 1170°C72°C68°C69°C
Sep 1270°C72°C68°C69°C
Sep 1370°C70°C66°C69°C
Sep 1470°C70°C64°C68°C
Sep 1572°C70°C64°C69°C
Sep 1672°C70°C68°C69°C
Sep 1772°C68°C68°C69°C
Sep 1872°C68°C66°C69°C
Sep 1970°C68°C64°C68°C
Sep 2068°C64°C63°C66°C
Sep 2172°C64°C64°C67°C
Sep 2268°C63°C66°C65°C
Sep 2372°C64°C61°C64°C
Sep 2472°C64°C68°C67°C
Sep 2570°C64°C61°C64°C
Sep 2672°C64°C63°C65°C
Sep 2770°C66°C63°C65°C
Sep 2870°C64°C66°C65°C
Sep 2968°C64°C64°C64°C
Massachusetts, United StatesMassachusetts, United StatesMassachusetts, United States

Nantucket Climate and Swimming Opportunities in September

72°F

Average Day Air Temperature

57°F

Average Night Air Temperature

4 in

Precipitation Amount per Month

9 days

Number of Rainy Days

12 hrs

Daylight
per Day

7 hrs

Sunshine
per Day

11 mph

Average Wind Speed

76%

Average
humidity

Nantucket lies within the Massachusetts in United States. The average daytime temperature in Nantucket in September is 72°F (22°C), while the nighttime average is 58°F (14°C). There are typically nine rainy days during the month, with a total precipitation of 3.5 inches (89 mm). The daylight duration in September in Nantucket is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in September is 11 mph (18 km/h), and the humidity level is around 76%.

The water temperature in Nantucket in September ranges from 64°F to 70°F (18°C to 21°C). At the beginning of the month, the average temperature is around 70°F (21°C), shifting to 68°F (20°C) by mid-September and reaching 66°F (19°C) in the last ten days. Overall, the average sea temperature in Nantucket for September is 68°F (20°C). Very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.

Frequently Asked Questions About Water Temperatures in September in Nantucket

What is the sea temperature in Nantucket in September?

The water temperature in the Atlantic Ocean in Nantucket in September ranges from 64°F to 70°F (18°C to 21°C).

Is it possible to swim in the Atlantic Ocean in Nantucket in September?

The average sea temperature in Nantucket in September is 68°F (20°C), and the air temperature is 72°F (22°C), so very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.