Sea Temperature in Cape Cod in May

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

43°F

MINIMUN

52°F

AVERAGE

61°F

MAXIMUM

Historical Data of Water Temperature in May in Cape Cod

Water Temperature Chart for Atlantic Ocean in Cape Cod in May

Sea Temperature Table in Cape Cod in May Over the Past Years

Day	2024	2023	2022	Average
May 1	50°C	45°C	43°C	46°C
May 2	50°C	45°C	45°C	47°C
May 3	50°C	46°C	45°C	48°C
May 4	50°C	48°C	45°C	48°C
May 5	50°C	48°C	45°C	48°C
May 6	52°C	48°C	46°C	49°C
May 7	50°C	48°C	46°C	49°C
May 8	52°C	48°C	46°C	49°C
May 9	52°C	48°C	46°C	49°C
May 10	52°C	48°C	48°C	50°C
May 11	52°C	48°C	48°C	50°C
May 12	54°C	48°C	48°C	50°C
May 13	54°C	48°C	48°C	51°C
May 14	54°C	48°C	50°C	51°C
May 15	55°C	50°C	50°C	52°C
May 16	55°C	50°C	50°C	52°C
May 17	55°C	52°C	50°C	52°C
May 18	57°C	52°C	50°C	53°C
May 19	59°C	52°C	52°C	54°C
May 20	57°C	52°C	52°C	54°C
May 21	57°C	52°C	52°C	54°C
May 22	59°C	52°C	52°C	54°C
May 23	59°C	54°C	54°C	55°C
May 24	59°C	52°C	54°C	55°C
May 25	59°C	54°C	54°C	56°C
May 26	59°C	54°C	54°C	56°C
May 27	59°C	55°C	55°C	57°C
May 28	59°C	57°C	55°C	57°C
May 29	55°C	57°C	55°C	57°C
May 30	54°C	57°C	55°C	56°C

Cape Cod Climate and Swimming Opportunities in May

64°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

8 hrs

Sunshine
per Day

12 mph

Average Wind Speed

72%

Average
humidity

Cape Cod lies within the Massachusetts in United States. The average daytime temperature in Cape Cod in May is 64°F (18°C), while the nighttime average is 47°F (9°C). There are typically 11 rainy days during the month, with a total precipitation of 3.5 inches (89 mm). The daylight duration in May in Cape Cod is 14 hours, with an average of 8 hours of sunshine per day. The average wind speed in May is 12 mph (19 km/h), and the humidity level is around 72%.

The water temperature in Cape Cod in May ranges from 46°F to 57°F (8°C to 14°C). At the beginning of the month, the average temperature is around 48°F (9°C), shifting to 52°F (11°C) by mid-May and reaching 55°F (13°C) in the last ten days. Overall, the average sea temperature in Cape Cod for May is 52°F (11°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 Cape Cod

What is the sea temperature in Cape Cod in May?

The water temperature in the Atlantic Ocean in Cape Cod in May ranges from 46°F to 57°F (8°C to 14°C).

Is it possible to swim in the Atlantic Ocean in Cape Cod in May?

The average sea temperature in Cape Cod in May is 52°F (11°C), and the air temperature is 64°F (18°C), so ideal conditions for a refreshing swim, though some may still find it a bit cool.