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Water temperature in Rochester (NY) in September

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Is it warm enough to swim in Rochester in September? Average water temperature in Rochester in September is 69.1°F and therefore suitable for comfortable swimming. The warmest water in Rochester in September is 75.6°F, and the coldest is 62.8°F. Average high air temperature in Rochester in September is 72°F, and average low temperature is 52°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Rochester

Changes water temperature in Rochester in September 2025, 2024

To get an accurate forecast for the water temperature in Rochester for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Rochester, 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:

Year 1:   Year 2:


Day 2025 2024 Min Max
September 169.4°F71.2°F68.2°F73.9°F
September 269.8°F71.4°F68.5°F74.8°F
September 370°F70.7°F68.7°F74.5°F
September 470.2°F70.5°F68.4°F74.1°F
September 569.3°F70.3°F68.4°F75.6°F
September 6 70.5°F68°F75.6°F
September 7 70.2°F67.6°F74.8°F
September 8 69.6°F67.6°F73.9°F
September 9 69.3°F67.1°F74.3°F
September 10 68.5°F66.7°F74.5°F
September 11 68.4°F66.4°F73.4°F
September 12 68°F66°F73.2°F
September 13 68.9°F65.7°F73°F
September 14 69.3°F65.5°F72.5°F
September 15 70.2°F64.9°F72.3°F
Day 2025 2024 Min Max
September 16 70.7°F64.4°F71.8°F
September 17 70.3°F64.6°F71.8°F
September 18 70.2°F64.2°F72°F
September 19 70.7°F63.5°F72.9°F
September 20 69.8°F63.9°F72.5°F
September 21 70.2°F64°F72.3°F
September 22 69.3°F63.3°F72°F
September 23 68.9°F63°F71.6°F
September 24 68.2°F62.8°F71.1°F
September 25 67.8°F63.3°F71.2°F
September 26 67.3°F63.5°F72.3°F
September 27 66.2°F64°F72.7°F
September 28 66°F64°F70.7°F
September 29 65.8°F63.5°F69.6°F
September 30 66.6°F63°F68.2°F
Rochester water temp chart in September

Average water temperature in Rochester in September over a decade

20152016201720182019
69.6°F71.8°F68.9°F69.8°F67.1°F
20202021202220232024
69.1°F70.7°F69.1°F69.6°F69.1°F

Rochester sea state in September

Chart comparing the height of waves in Rochester 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.

Waves height in Rochester in September

Weather and climate in Rochester in September

This data display average monthly climate indicators in Rochester 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 temperature72°F
  • Average LOW temperature52°F
  • Average humidity
    77
  • Average rainfall days12 days
  • Average rainfall86mm/3.4''
  • Average sunshine7.1h

Rochester water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in September?

Want to know where the water temperature in September is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
New York City71.1°F64.8°F78.1°F
Hamlin Beach69.1°F62.6°F75.7°F
Sodus Point69.3°F62.2°F76.1°F
Fair Haven69.3°F62.4°F76.8°F
Sandbanks68.7°F60.1°F75.2°F
North Beach68.5°F62.1°F75.2°F
Prince Edward68.7°F61.7°F75.2°F
Brighton68.2°F61°F74.8°F
Cobourg67.8°F58.5°F74.8°F
Oswego69.4°F62.8°F76.8°F

Rochester photo gallery

  • sunrise Sept. 9, 2022 Ontario Beach Park

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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