This data the coastal Gary water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Water temperature in Gary today is 68.7°F. Based on our historical data over a period of ten years, the warmest water in this day in Gary was recorded in 2024 and was 71.2°F, and the coldest was recorded in 2014 at 65.8°F. Water temperature in Gary is expected to drop to 68°F in the next 10 days. September average water temperature in Gary is 69.3°F, the minimum temperature is 63.5°F, and the maximum is 75°F.
The swimming season in Gary lasts from July to September. During those months, Gary water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Gary in winter reaches 37°F, in spring 43.7°F, in summer the average temperature rises to 69.4°F, and in autumn it is 59.7°F.
September 13, 2025 |
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today temp |
68.7°F |
September 12, 2025 |
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yesterday temp |
69.3°F |
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Gary. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Gary. Data in table shown for September 13, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
0' 8" | 0' 7" | 0' 7" | 0' 5" |
0.2 m | 0.19 m | 0.18 m | 0.13 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
0' 3" | 0' 4" | 0' 8" | 0' 7" |
0.07 m | 0.09 m | 0.2 m | 0.18 m |
Data in a table show Gary temperature today (September 13, 2025). For more information and forecast for a few days, go to the weather forecast Gary.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
69.4°F | 66°F | 64.8°F | 67.6°F |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
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77.7°F | 81.5°F | 81°F | 76.1°F |
You may also be interested in other sections of our site for Gary: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly water temperature in Gary. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Gary on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
Month | Avr | Min | Max | |
---|---|---|---|---|
January | 35.6°F | 30.4°F | 43.3°F | cold |
Water temperature in Gary in January | ||||
February | 33.8°F | 30.9°F | 38.1°F | cold |
Water temperature in Gary in February | ||||
March | 36.1°F | 30.7°F | 45.3°F | cold |
Water temperature in Gary in March | ||||
April | 42.4°F | 33.6°F | 50°F | cold |
Water temperature in Gary in April | ||||
May | 52.5°F | 44.1°F | 66.4°F | cold |
Water temperature in Gary in May | ||||
June | 63.3°F | 53.8°F | 73°F | cold |
Water temperature in Gary in June | ||||
July | 71.8°F | 63.1°F | 79.2°F | warm |
Water temperature in Gary in July | ||||
August | 73.2°F | 68.4°F | 77.2°F | warm |
Water temperature in Gary in August | ||||
September | 69.3°F | 63.5°F | 75°F | warm |
Water temperature in Gary in September | ||||
October | 59.9°F | 50.7°F | 68.4°F | cold |
Water temperature in Gary in October | ||||
November | 50°F | 40.6°F | 61°F | cold |
Water temperature in Gary in November | ||||
December | 41.7°F | 32.9°F | 51.6°F | cold |
Water temperature in Gary in December |