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Miami in September

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

66.2 °F

Average:

69.0 °F

Maximum:

71.1 °F

Sea water temperature in Miami in September

In the city of Miami, the month of September is somewhat comfortable for swimming. The minimum recorded temperature during this month was 66.2°F on September 10, 2019, with an average temperature being 69.0°F and a maximum temperature reaching 71.1°F on September 19, 2024.

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 September, the sea temperature remains relatively stable. The average temperature stays close to 69.0°F throughout the month, with minimal changes.
Date 10 years average 2024 2023
Sep 1 68.6°F 69.2°F 69.5°F
Sep 2 68.8°F 68.8°F 70.1°F
Sep 3 68.9°F 69.0°F 70.1°F
Sep 4 68.8°F 68.9°F 70.1°F
Sep 5 68.6°F 69.0°F 70.3°F
Sep 6 68.6°F 69.0°F 69.8°F
Sep 7 68.5°F 68.6°F 69.4°F
Sep 8 68.5°F 68.6°F 69.3°F
Sep 9 68.6°F 68.8°F 68.8°F
Sep 10 68.5°F 69.2°F 68.1°F
Sep 11 68.6°F 69.8°F 67.9°F
Sep 12 68.7°F 69.0°F 68.6°F
Sep 13 69.0°F 70.1°F 68.3°F
Sep 14 69.0°F 70.1°F 69.5°F
Sep 15 69.0°F 70.2°F 70.3°F
Sep 16 68.9°F 70.3°F 69.9°F
Sep 17 69.0°F 70.7°F 69.9°F
Sep 18 69.0°F 70.7°F 70.4°F
Sep 19 69.1°F 71.1°F 70.8°F
Sep 20 69.1°F 70.6°F 70.3°F
Sep 21 69.4°F 70.7°F 70.2°F
Sep 22 69.2°F 70.5°F 69.1°F
Sep 23 69.3°F 70.7°F 69.3°F
Sep 24 69.2°F 71.0°F 69.9°F
Sep 25 69.3°F 71.1°F 69.7°F
Sep 26 69.3°F 70.9°F 71.1°F
Sep 27 69.4°F 70.9°F 69.7°F
Sep 28 69.5°F 70.6°F 69.5°F
Sep 29 69.4°F 71.0°F 69.8°F
Sep 30 69.5°F 69.9°F 70.4°F

Sea water temperature in Miami by month

In Miami, the months December through May offer comfortable swimming conditions, which amounts to 177 swimming days. The warmest water in Miami was recorded on February 27, 2024, reaching a 82.2°F. While the coldest temperature occurred on August 8, 2018, dipping to 64.8°F. The average readings by season are 77.8°F in Winter, 76.7°F in Spring, 69.6°F in Summer, and 70.9°F in Autumn. The average temperature in September is slightly warmer than August's average of 68.3°F. And in October, the temperature is expected to rise further, potentially reaching an average of 70.9°F.

Popular neighboring cities and resorts

City Water temperature* Distance**
Gold Coast 74.8°F 5mi
Runaway Bay 75.1°F 11mi
Brisbane 77.3°F 49mi
Hamilton 77.3°F 49mi

* current water temperature in this city

** straight line distance from Miami