Chaumont Bay — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Chaumont Bay, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Chaumont Bay today is 13.3°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| OCT 5 | 14.6°C | 15.5°C | |
| OCT 6 | 14.2°C | 15.5°C | |
| OCT 7 | 15.0°C | 15.5°C | |
| OCT 8 | 13.4°C | 15.5°C | |
| OCT 9 | 13.4°C | 15.5°C | |
| OCT 10 | 14.3°C | 15.5°C | |
| OCT 11 | 14.3°C | 15.5°C | |
| OCT 12 | 13.7°C | 15.5°C | |
| OCT 13 | 15.5°C | 13.4°C | |
| OCT 14 | 15.5°C | 13.5°C | |
| OCT 15 | 15.5°C | 13.6°C | |
| OCT 16 | 15.5°C | 13.7°C | |
| OCT 17 | 15.5°C | 13.9°C | |
| OCT 18 | 15.5°C | 14.0°C | |
| OCT 19 | 15.5°C | 14.1°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 0°C | 2°C | 4°C |
| February | 0°C | 2°C | 5°C |
| March | 1°C | 3°C | 6°C |
| April | 2°C | 7°C | 12°C |
| May | 6°C | 11°C | 16°C |
| June | 14°C | 18°C | 22°C |
| July | 20°C | 25°C | 29°C |
| August | 20°C | 23°C | 26°C |
| September | 18°C | 21°C | 23°C |
| October | 13°C | 16°C | 18°C |
| November | 5°C | 11°C | 16°C |
| December | 2°C | 5°C | 7°C |
Chaumont Bay: Water Temperature by Location
Chaumont Bay: Weather Forecast
October 13
October 14
October 15
October 16
October 17
Location & Local Information
Chaumont Bay, an embayment on the southeastern shore of Lake Ontario near Chaumont, New York, experiences water temperatures that follow typical Great Lakes patterns but can be a bit more variable because the bay is shallower and more sheltered. In winter the surface often sits close to freezing, roughly 32–41°F (0–5°C). Spring sees a rapid rise as runoff and warming air push temperatures into the 40–55°F (4–13°C) range. The warmest conditions occur in midsummer, when sheltered nearshore areas of the bay commonly reach about 60–74°F (15–23°C), though open-lake influences can keep waters cooler. By autumn the water cools again, generally falling to about 45–60°F (7–16°C) before ice and winter temperatures return.
Swimming in Chaumont Bay is possible at public access points and at nearby Lake Ontario beaches, but availability depends on local access, posted rules, and seasonal conditions. There are few staffed lifeguard areas directly on the bay, so swimmers should be cautious: even in summer the water can feel cold and poses risks of cold shock or hypothermia, and boat traffic, currents, submerged hazards, or occasional water-quality advisories can limit safe swimming. Always check local advisories, respect signage and private property, and use appropriate safety precautions when entering the water.