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Sea Temperature in Southwest Harbor in September

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

52°F

MINIMUN

56°F

AVERAGE

61°F

MAXIMUM

Historical Data of Water Temperature in September in Southwest Harbor

Water Temperature Chart for Atlantic Ocean in Southwest Harbor in September

Sea Temperature Table in Southwest Harbor in September Over the Past Years

Day202420232022Average
Sep 159°C59°C55°C58°C
Sep 259°C54°C54°C56°C
Sep 359°C54°C54°C55°C
Sep 457°C57°C54°C56°C
Sep 561°C55°C54°C56°C
Sep 659°C54°C54°C55°C
Sep 759°C57°C54°C56°C
Sep 859°C59°C54°C57°C
Sep 959°C55°C54°C56°C
Sep 1059°C59°C55°C57°C
Sep 1157°C55°C55°C56°C
Sep 1259°C55°C54°C56°C
Sep 1359°C55°C54°C56°C
Sep 1457°C55°C55°C56°C
Sep 1557°C59°C55°C57°C
Sep 1659°C55°C55°C57°C
Sep 1759°C52°C55°C55°C
Sep 1859°C57°C55°C57°C
Sep 1959°C55°C55°C56°C
Sep 2059°C57°C55°C57°C
Sep 2159°C54°C54°C55°C
Sep 2259°C59°C54°C57°C
Sep 2359°C54°C54°C55°C
Sep 2457°C55°C54°C55°C
Sep 2559°C59°C54°C56°C
Sep 2659°C54°C55°C56°C
Sep 2757°C52°C55°C55°C
Sep 2859°C55°C55°C56°C
Sep 2959°C52°C55°C55°C
Maine, United StatesMaine, United StatesMaine, United States

Southwest Harbor Climate and Swimming Opportunities in September

61°F

Average Day Air Temperature

48°F

Average Night Air Temperature

3 in

Precipitation Amount per Month

16 days

Number of Rainy Days

13 hrs

Daylight
per Day

4 hrs

Sunshine
per Day

11 mph

Average Wind Speed

88%

Average
humidity

Southwest Harbor lies within the Maine in United States. The average daytime temperature in Southwest Harbor in September is 61°F (16°C), while the nighttime average is 49°F (9°C). There are typically 16 rainy days during the month, with a total precipitation of 3.1 inches (78 mm). The daylight duration in September in Southwest Harbor is 13 hours, with an average of 4 hours of sunshine per day. The average wind speed in September is 11 mph (18 km/h), and the humidity level is around 88%.

The water temperature in Southwest Harbor in September ranges from 54°F to 57°F (12°C to 14°C). At the beginning of the month, the average temperature is around 55°F (13°C), shifting to 57°F (14°C) by mid-September and reaching 55°F (13°C) in the last ten days. Overall, the average sea temperature in Southwest Harbor for September is 55°F (13°C). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Frequently Asked Questions About Water Temperatures in September in Southwest Harbor

What is the sea temperature in Southwest Harbor in September?

The water temperature in the Atlantic Ocean in Southwest Harbor in September ranges from 54°F to 57°F (12°C to 14°C).

Is it possible to swim in the Atlantic Ocean in Southwest Harbor in September?

The average sea temperature in Southwest Harbor in September is 55°F (13°C), and the air temperature is 61°F (16°C), so ideal conditions for a refreshing swim, though some may still find it a bit cool.