Sea Temperature in Portland in July

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

54°F

MINIMUN

61°F

AVERAGE

68°F

MAXIMUM

Historical Data of Water Temperature in July in Portland

Water Temperature Chart for Atlantic Ocean in Portland in July

Sea Temperature Table in Portland in July Over the Past Years

Day	2024	2023	2022	Average
Jul 1	61°C	54°C	54°C	56°C
Jul 2	59°C	54°C	54°C	55°C
Jul 3	59°C	54°C	54°C	56°C
Jul 4	59°C	54°C	54°C	56°C
Jul 5	59°C	55°C	55°C	57°C
Jul 6	59°C	55°C	55°C	57°C
Jul 7	61°C	55°C	55°C	58°C
Jul 8	61°C	55°C	55°C	58°C
Jul 9	61°C	55°C	55°C	59°C
Jul 10	61°C	55°C	55°C	59°C
Jul 11	61°C	57°C	57°C	60°C
Jul 12	61°C	57°C	57°C	60°C
Jul 13	61°C	57°C	57°C	59°C
Jul 14	63°C	57°C	57°C	60°C
Jul 15	64°C	57°C	57°C	60°C
Jul 16	63°C	57°C	57°C	60°C
Jul 17	63°C	59°C	59°C	60°C
Jul 18	63°C	59°C	59°C	61°C
Jul 19	61°C	59°C	59°C	60°C
Jul 20	63°C	59°C	59°C	61°C
Jul 21	63°C	59°C	59°C	61°C
Jul 22	63°C	59°C	59°C	61°C
Jul 23	63°C	61°C	61°C	62°C
Jul 24	63°C	61°C	61°C	62°C
Jul 25	63°C	61°C	61°C	61°C
Jul 26	63°C	61°C	61°C	62°C
Jul 27	64°C	61°C	61°C	62°C
Jul 28	64°C	61°C	61°C	63°C
Jul 29	63°C	63°C	63°C	63°C
Jul 30	61°C	63°C	63°C	62°C

Portland Climate and Swimming Opportunities in July

64°F

Average Day Air Temperature

52°F

Average Night Air Temperature

3 in

Precipitation Amount per Month

16 days

Number of Rainy Days

16 hrs

Daylight
per Day

5 hrs

Sunshine
per Day

10 mph

Average Wind Speed

85%

Average
humidity

Portland lies within the Maine in United States. The average daytime temperature in Portland in July is 65°F (18°C), while the nighttime average is 53°F (11°C). There are typically 16 rainy days during the month, with a total precipitation of 2.8 inches (72 mm). The daylight duration in July in Portland is 16 hours, with an average of 5 hours of sunshine per day. The average wind speed in July is 10 mph (16 km/h), and the humidity level is around 85%.

The water temperature in Portland in July ranges from 55°F to 63°F (13°C to 17°C). At the beginning of the month, the average temperature is around 57°F (14°C), shifting to 59°F (15°C) by mid-July and reaching 61°F (16°C) in the last ten days. Overall, the average sea temperature in Portland for July is 59°F (15°C). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Sea Temperature in July in Nearby Cities

Frequently Asked Questions About Water Temperatures in July in Portland

What is the sea temperature in Portland in July?

The water temperature in the Atlantic Ocean in Portland in July ranges from 55°F to 63°F (13°C to 17°C).

Is it possible to swim in the Atlantic Ocean in Portland in July?

The average sea temperature in Portland in July is 59°F (15°C), and the air temperature is 65°F (18°C), so ideal conditions for a refreshing swim, though some may still find it a bit cool.