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Belfast in August

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

64.0 °F

Average:

68.2 °F

Maximum:

73.6 °F

Sea water temperature in Belfast in August

In the city of Belfast, the month of August is somewhat comfortable for swimming. The minimum recorded temperature during this month was 64.0°F on August 13, 2023, with an average temperature being 68.2°F and a maximum temperature reaching 73.6°F on August 12, 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. In August, the sea temperature remains relatively stable. The average temperature stays close to 68.2°F throughout the month, with minimal changes.
Date 10 years average 2024 2023
Aug 1 68.8°F 67.6°F 69.1°F
Aug 2 68.7°F 67.0°F 71.2°F
Aug 3 68.6°F 68.6°F 69.5°F
Aug 4 68.7°F 69.4°F 68.1°F
Aug 5 68.8°F 69.7°F 68.0°F
Aug 6 68.6°F 69.8°F 67.9°F
Aug 7 68.7°F 69.7°F 65.3°F
Aug 8 68.3°F 69.1°F 65.2°F
Aug 9 68.2°F 67.6°F 65.6°F
Aug 10 68.1°F 67.5°F 65.7°F
Aug 11 68.3°F 67.7°F 64.5°F
Aug 12 68.7°F 68.0°F 65.3°F
Aug 13 68.4°F 67.8°F 64.0°F
Aug 14 68.2°F 67.6°F 64.2°F
Aug 15 68.7°F 68.1°F 65.6°F
Aug 16 68.5°F 68.5°F 65.8°F
Aug 17 68.6°F 69.6°F 65.9°F
Aug 18 68.3°F 71.5°F 65.5°F
Aug 19 68.3°F 70.6°F 65.3°F
Aug 20 68.5°F 70.5°F 67.4°F
Aug 21 68.4°F 70.0°F 68.0°F
Aug 22 68.0°F 69.5°F 66.9°F
Aug 23 68.3°F 70.1°F 67.5°F
Aug 24 68.0°F 69.4°F 65.8°F
Aug 25 68.2°F 67.8°F 65.5°F
Aug 26 68.3°F 69.0°F 66.1°F
Aug 27 68.1°F 69.0°F 65.9°F
Aug 28 67.3°F 68.7°F 65.5°F
Aug 29 67.1°F 68.9°F 65.2°F
Aug 30 66.6°F 67.3°F 64.8°F
Aug 31 66.6°F 65.7°F 65.1°F

Sea water temperature in Belfast by month

In an average year, Belfast offers no days when the water temperature is warm enough to swim comfortably. The warmest water in Belfast was recorded on August 12, 2020, reaching a 73.6°F. While the coldest temperature occurred on January 1, 2018, dipping to 32.0°F. The average readings by season are 33.2°F in Winter, 36.3°F in Spring, 61.3°F in Summer, and 55.0°F in Autumn. In August, the temperature is higher than July's average of 63.8°F and September's average of 63.6°F.