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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:

57.1 °F

Average:

61.1 °F

Maximum:

65.8 °F

Sea water temperature in Plymouth in July

In the city of Plymouth, the month of July is somewhat too cool for swimming. The minimum recorded temperature during this month was 57.1°F on July 11, 2020, with an average temperature being 61.1°F and a maximum temperature reaching 65.8°F on July 27, 2014.

Most people would find such water temperature somewhat too cold for swimming. In July, the sea temperature remains relatively stable. The average temperature stays close to 61.1°F throughout the month, with minimal changes.
Date 10 years average 2024 2023
Jul 1 60.1°F 60.0°F 61.9°F
Jul 2 60.0°F 59.9°F 60.5°F
Jul 3 60.1°F 59.9°F 60.2°F
Jul 4 60.0°F 59.5°F 59.6°F
Jul 5 59.9°F 59.5°F 59.3°F
Jul 6 60.0°F 59.3°F 58.7°F
Jul 7 60.0°F 59.1°F 59.0°F
Jul 8 60.2°F 59.2°F 59.5°F
Jul 9 60.2°F 59.1°F 60.5°F
Jul 10 60.4°F 59.2°F 60.9°F
Jul 11 60.5°F 59.6°F 60.8°F
Jul 12 60.6°F 59.9°F 60.7°F
Jul 13 60.8°F 60.4°F 60.8°F
Jul 14 60.7°F 60.5°F 60.7°F
Jul 15 60.9°F 60.9°F 60.7°F
Jul 16 61.0°F 60.5°F 60.7°F
Jul 17 61.4°F 60.9°F 60.5°F
Jul 18 61.6°F 61.1°F 60.9°F
Jul 19 62.0°F 62.1°F 60.9°F
Jul 20 62.0°F 62.3°F 61.1°F
Jul 21 61.9°F 62.2°F 60.6°F
Jul 22 62.2°F 62.5°F 60.9°F
Jul 23 62.4°F 62.4°F 60.5°F
Jul 24 62.5°F 62.0°F 60.8°F
Jul 25 62.4°F 62.0°F 60.7°F
Jul 26 62.2°F 61.4°F 60.3°F
Jul 27 62.4°F 61.4°F 60.5°F
Jul 28 62.0°F 61.2°F 60.6°F
Jul 29 61.8°F 61.9°F 60.7°F
Jul 30 61.8°F 62.6°F 60.8°F
Jul 31 61.9°F 63.3°F 60.8°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 August 15, 2022, reaching a 66.6°F. While the coldest temperature occurred on March 20, 2018, dipping to 45.6°F. The average readings by season are 50.9°F in Winter, 50.9°F in Spring, 60.4°F in Summer, and 59.1°F in Autumn. The average temperature in July is slightly warmer than June's average of 58.1°F. And in August, the temperature is expected to rise further, potentially reaching an average of 61.9°F.