Tenmile Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Tenmile Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Tenmile Lake today is 18.8°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 14 | 19.5°C | 19.7°C | |
| SEP 15 | 19.1°C | 19.7°C | |
| SEP 16 | 19.0°C | 19.7°C | |
| SEP 17 | 18.4°C | 19.7°C | |
| SEP 18 | 18.6°C | 19.7°C | |
| SEP 19 | 19.0°C | 19.7°C | |
| SEP 20 | 18.9°C | 19.7°C | |
| SEP 21 | 18.8°C | 19.7°C | |
| SEP 22 | 19.7°C | 18.8°C | |
| SEP 23 | 19.7°C | 18.9°C | |
| SEP 24 | 19.7°C | 18.9°C | |
| SEP 25 | 19.7°C | 19.0°C | |
| SEP 26 | 19.7°C | 19.0°C | |
| SEP 27 | 19.7°C | 19.1°C | |
| SEP 28 | 19.7°C | 19.1°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 | 4°C | 8°C | 11°C |
| February | 5°C | 8°C | 11°C |
| March | 2°C | 7°C | 13°C |
| April | 8°C | 13°C | 17°C |
| May | 9°C | 13°C | 18°C |
| June | 14°C | 18°C | 22°C |
| July | 18°C | 21°C | 24°C |
| August | 16°C | 20°C | 25°C |
| September | 16°C | 20°C | 24°C |
| October | 12°C | 16°C | 20°C |
| November | 8°C | 12°C | 16°C |
| December | 7°C | 11°C | 14°C |
Tenmile Lake: Water Temperature by Location
Tenmile Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Tenmile Lake’s surface temperatures vary considerably through the year and are strongly influenced by coastal weather, wind, and lake depth. In winter the water is typically quite cold, often in the upper 30s to upper 40s °F (about 3–9 °C). Spring brings a gradual rise, with surface readings commonly between the mid-40s and around 60 °F (7–16 °C). Peak summer surface temperatures tend to range roughly from the low 60s to the low 70s °F (16–22 °C) on warm, calm days, though deeper water remains colder. By fall the lake cools again, with surface values generally falling into the 50s to low 60s °F (10–17 °C). Short-term swings can be large after storms or heat spells, and thermal stratification means subsurface temperatures are usually several degrees lower than the surface.
Swimming at Tenmile Lake is allowed and is a common recreational use, particularly at popular shorelines and designated access points, but it is subject to the usual safety and health considerations. Lifeguards are not typically on duty, boat traffic and submerged vegetation present hazards, and cold water—even in summer—can cause shock or rapid loss of body heat. Occasional water-quality advisories for bacteria or algal blooms can close swimming areas, so visitors should heed posted signs and local guidance, enter gradually to gauge temperature, and follow standard lake-safety practices.