Water temperature in Cleveland (OH) in September
Is it warm enough to swim in Cleveland in September? Average water temperature in Cleveland in September is 71.8°F and therefore suitable for comfortable swimming. The warmest water in Cleveland in September is 77.9°F, and the coldest is 64.6°F. Average high air temperature in Cleveland in September is 74°F, and average low temperature is 56°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Cleveland
Changes water temperature in Cleveland in September 2025, 2024
To get an accurate forecast for the water temperature in Cleveland for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Cleveland, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.
You can choose any other years:
| Day | 2025 | 2024 | Min | Max |
|---|---|---|---|---|
| September 1 | 72.3°F | 74.8°F | 71.8°F | 77.2°F |
| September 2 | 72.3°F | 73.9°F | 71.2°F | 76.5°F |
| September 3 | 72.3°F | 73.8°F | 70.9°F | 76.5°F |
| September 4 | 71.8°F | 73.4°F | 70.7°F | 77.4°F |
| September 5 | 71.2°F | 73.4°F | 70.9°F | 77.9°F |
| September 6 | 70.7°F | 72.7°F | 70.7°F | 77.5°F |
| September 7 | 70.3°F | 71.8°F | 70.2°F | 76.6°F |
| September 8 | 70.3°F | 71.1°F | 69.8°F | 77.2°F |
| September 9 | 70°F | 70.7°F | 69.3°F | 76.6°F |
| September 10 | 70°F | 71.2°F | 69.1°F | 76.1°F |
| September 11 | 70.5°F | 71.2°F | 68.9°F | 75.6°F |
| September 12 | 70.9°F | 71.2°F | 68.9°F | 75.2°F |
| September 13 | 70.7°F | 71.1°F | 69.3°F | 75°F |
| September 14 | 70.5°F | 71.2°F | 69.4°F | 74.7°F |
| September 15 | 70.3°F | 71.2°F | 69.6°F | 74.3°F |
| Day | 2025 | 2024 | Min | Max |
|---|---|---|---|---|
| September 16 | 70.5°F | 71.2°F | 69.3°F | 73.9°F |
| September 17 | 71.2°F | 71.1°F | 69.3°F | 73.8°F |
| September 18 | 71.6°F | 71.1°F | 68.4°F | 73.9°F |
| September 19 | 71.4°F | 71.4°F | 67.6°F | 74.5°F |
| September 20 | 70.9°F | 71.8°F | 68°F | 74.3°F |
| September 21 | 70.9°F | 72°F | 68.4°F | 74.3°F |
| September 22 | 71.1°F | 72.5°F | 66.2°F | 74.5°F |
| September 23 | 71.4°F | 72.3°F | 66.2°F | 74.5°F |
| September 24 | 71.4°F | 72.1°F | 66.6°F | 73.9°F |
| September 25 | 70.9°F | 72°F | 66.2°F | 73°F |
| September 26 | 71.1°F | 72.1°F | 66°F | 73.4°F |
| September 27 | 71.8°F | 71.8°F | 65.5°F | 73.2°F |
| September 28 | 71.4°F | 71.6°F | 65.1°F | 71.8°F |
| September 29 | 71.4°F | 71.4°F | 65.1°F | 71.4°F |
| September 30 | 71.1°F | 71.4°F | 64.6°F | 71.4°F |
Average water temperature in Cleveland in September over a decade
| 2016 | 2017 | 2018 | 2019 | 2020 |
| 74.3°F | 70.7°F | 73.2°F | 72°F | 71.1°F |
| 2021 | 2022 | 2023 | 2024 | 2025 |
| 72.7°F | 72°F | 71.6°F | 72°F |
Cleveland sea state in September
Chart comparing the height of waves in Cleveland in September over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.
Weather and climate in Cleveland in September
This data display average monthly climate indicators in Cleveland in September based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip
- Average HIGH temperature74°F
- Average LOW temperature56°F
- Average humidity
74 - Average rainfall days10 days
- Average rainfall97mm/3.8''
- Average daylight12h
- Average sunshine7.3h
- Average UV index6
Cleveland water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below
