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Plymouth in July

Find out everything about the water temperature in Plymouth in July. Average, minimum and maximum recorded temperatures as well as daily temperature in July for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in July
Minimum:

60.9 °F

Average:

66.9 °F

Maximum:

76.3 °F

Sea water temperature in Plymouth in July

In the city of Plymouth, the month of July is somewhat comfortable for swimming. The minimum recorded temperature during this month was 60.9°F on July 1, 2015, with an average temperature being 66.9°F and a maximum temperature reaching 76.3°F on July 31, 2020.

While some may find it enjoyable for a brief swim, others might consider it a bit too cold for extended periods in the water. Throughout the month of July, the sea temperature gradually gets warmer. Starting with an average temperature of 64.9°F at the beginning of the month, it steadily increases to around 68.5°F by the end.
Date 10 years average 2023 2022
Jul 1 63.7°F 64.4°F 66.1°F
Jul 2 64.1°F 65.3°F 65.8°F
Jul 3 64.3°F 65.5°F 64.9°F
Jul 4 64.7°F 65.1°F 63.8°F
Jul 5 64.9°F 66.1°F 64.1°F
Jul 6 65.0°F 64.1°F 66.0°F
Jul 7 65.5°F 65.6°F 67.6°F
Jul 8 65.3°F 67.9°F 65.1°F
Jul 9 65.4°F 68.5°F 64.9°F
Jul 10 65.9°F 68.1°F 65.0°F
Jul 11 66.3°F 67.8°F 64.6°F
Jul 12 66.3°F 67.5°F 65.5°F
Jul 13 66.5°F 67.2°F 65.2°F
Jul 14 67.3°F 69.7°F 66.4°F
Jul 15 66.9°F 69.7°F 67.1°F
Jul 16 67.1°F 69.4°F 65.5°F
Jul 17 67.0°F 69.0°F 66.3°F
Jul 18 67.7°F 67.7°F 67.6°F
Jul 19 68.0°F 71.3°F 68.9°F
Jul 20 68.1°F 71.2°F 67.2°F
Jul 21 68.1°F 68.8°F 66.3°F
Jul 22 68.5°F 67.2°F 67.4°F
Jul 23 68.5°F 67.5°F 69.3°F
Jul 24 68.2°F 67.5°F 68.6°F
Jul 25 68.4°F 68.9°F 70.5°F
Jul 26 68.3°F 66.8°F 73.2°F
Jul 27 68.5°F 68.6°F 71.8°F
Jul 28 68.4°F 70.0°F 70.0°F
Jul 29 68.5°F 70.5°F 66.5°F
Jul 30 69.1°F 72.0°F 69.8°F
Jul 31 69.5°F 69.5°F 70.6°F

Sea water temperature in Plymouth by month

In an average year, Plymouth offers no days when the water temperature is warm enough to swim comfortably. The warmest water in Plymouth was recorded on July 31, 2020, reaching a 76.3°F. While the coldest temperature occurred on February 28, 2015, dipping to 33.6°F. The average readings by season are 41.3°F in Winter, 44.6°F in Spring, 64.9°F in Summer, and 58.8°F in Autumn. The average temperature in July is slightly warmer than June's average of 59.6°F. And in August, the temperature is expected to rise further, potentially reaching an average of 68.3°F.

Popular neighboring cities and resorts

City Water temperature* Distance**
South Boston 54.7°F 32mi
Boston 54.7°F 34mi
Bristol 56.2°F 36mi
Providence 55.9°F 39mi

* current water temperature in this city

** straight line distance from Plymouth