Calamus Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Calamus Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Calamus Reservoir today is 19°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| SEP 15 | 19.6°C | 23.0°C | |
| SEP 16 | 20.4°C | 23.0°C | |
| SEP 17 | 20.4°C | 23.0°C | |
| SEP 18 | 19.9°C | 23.0°C | |
| SEP 19 | 18.9°C | 23.0°C | |
| SEP 20 | 19.5°C | 23.0°C | |
| SEP 21 | 19.7°C | 23.0°C | |
| SEP 22 | 19.4°C | 23.0°C | |
| SEP 23 | 23.0°C | 19.2°C | |
| SEP 24 | 23.0°C | 19.4°C | |
| SEP 25 | 23.0°C | 19.6°C | |
| SEP 26 | 23.0°C | 19.8°C | |
| SEP 27 | 23.0°C | 20.0°C | |
| SEP 28 | 23.0°C | 20.2°C | |
| SEP 29 | 23.0°C | 20.4°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 | 4°C | 6°C |
| February | 0°C | 5°C | 9°C |
| March | 1°C | 8°C | 15°C |
| April | 8°C | 14°C | 19°C |
| May | 11°C | 17°C | 23°C |
| June | 17°C | 22°C | 26°C |
| July | 22°C | 26°C | 30°C |
| August | 23°C | 26°C | 29°C |
| September | 20°C | 23°C | 26°C |
| October | 11°C | 16°C | 21°C |
| November | 3°C | 10°C | 16°C |
| December | 0°C | 2°C | 5°C |
Calamus Reservoir: Water Temperature by Location
Calamus Reservoir: Weather Forecast
September 24
September 25
September 26
September 27
Location & Local Information
Calamus Reservoir’s water temperatures follow typical inland reservoir patterns, with cold winters and warm summers. In winter the surface often approaches freezing, roughly 32–40°F (0–4°C), while spring brings a steady rise into the range of about 40–60°F (4–16°C) as ice melts and air temperatures warm. Peak summer surface readings commonly sit between about 68–82°F (20–28°C), occasionally edging a few degrees higher during heat waves. In autumn the lake cools again, with surface temperatures generally falling into the 50–65°F (10–18°C) window as the season progresses. Deeper waters remain cooler year-round, and actual temperatures can vary with weather, inflow, and daytime heating.
Swimming at Calamus Reservoir is generally permitted in the recreation areas and at marked beaches, but conditions and rules can change, so visitors should observe posted signs. There are typically no lifeguards on duty, so swimming is at one’s own risk; flotation devices and swimming with companions are advisable. Seasonal factors such as low water, sudden temperature drops in spring and fall, and occasional algal or bacterial advisories can affect safety, so checking local notices before entering the water is recommended.