Lake Cochituate — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Cochituate, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Cochituate today is 21.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 14 | 22.0°C | 24.0°C | |
| SEP 15 | 22.1°C | 24.0°C | |
| SEP 16 | 20.9°C | 24.0°C | |
| SEP 17 | 20.9°C | 24.0°C | |
| SEP 18 | 20.5°C | 24.0°C | |
| SEP 19 | 21.3°C | 24.0°C | |
| SEP 20 | 21.2°C | 24.0°C | |
| SEP 21 | 21.2°C | 24.0°C | |
| SEP 22 | 24.0°C | 21.3°C | |
| SEP 23 | 24.0°C | 21.5°C | |
| SEP 24 | 24.0°C | 21.6°C | |
| SEP 25 | 24.0°C | 21.8°C | |
| SEP 26 | 24.0°C | 21.9°C | |
| SEP 27 | 24.0°C | 22.0°C | |
| SEP 28 | 24.0°C | 22.2°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 | 1°C | 4°C | 7°C |
| February | 3°C | 6°C | 9°C |
| March | 4°C | 8°C | 11°C |
| April | 8°C | 12°C | 15°C |
| May | 12°C | 16°C | 20°C |
| June | 15°C | 19°C | 22°C |
| July | 20°C | 24°C | 27°C |
| August | 22°C | 24°C | 27°C |
| September | 20°C | 24°C | 28°C |
| October | 14°C | 18°C | 21°C |
| November | 6°C | 10°C | 14°C |
| December | 1°C | 4°C | 8°C |
Lake Cochituate: Water Temperature by Location
Lake Cochituate: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Lake Cochituate’s water temperatures vary with the seasons and with depth. In the warmest weeks of July and August, surface temperatures in shallower spots typically reach roughly 72–78°F (22–26°C), while early summer in June often sees 60–70°F (15–21°C). By autumn the surface cools into the 50–60°F range (10–16°C) and in spring it can be similarly cool as the lake mixes. In winter the surface approaches freezing, near 32°F (0°C), and ice can form; deeper water remains colder than summer surface temperatures and often stays around the upper 30s to low 40s °F (about 4–6°C) year-round. These are approximate ranges and local conditions, wind, and recent weather influence actual readings day to day.
Swimming is allowed in designated areas of Cochituate State Park, where a supervised beach on the South Pond is maintained seasonally and monitored for basic safety and water quality. Outside the staffed beach, people swim from shore or boats but such areas are not supervised and may have boat traffic, variable water clarity, or occasional algal blooms that prompt advisories. Because surface temperatures can be cool outside midsummer and deeper water remains markedly colder, swimmers should be aware of cold-water effects and follow posted guidance and seasonal advisories before entering the lake.