Lake Kapowsin — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Kapowsin, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Kapowsin today is 19.8°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 |
|---|---|---|---|
| AUG 24 | 19.9°C | 24.5°C | |
| AUG 25 | 19.4°C | 24.5°C | |
| AUG 26 | 19.5°C | 24.5°C | |
| AUG 27 | 19.5°C | 24.5°C | |
| AUG 28 | 19.5°C | 24.5°C | |
| AUG 29 | 20.1°C | 24.5°C | |
| AUG 30 | 20.1°C | 24.5°C | |
| AUG 31 | 19.9°C | 24.5°C | |
| SEP 1 | 21.5°C | 19.9°C | |
| SEP 2 | 21.5°C | 20.0°C | |
| SEP 3 | 21.5°C | 20.1°C | |
| SEP 4 | 21.5°C | 20.1°C | |
| SEP 5 | 21.5°C | 20.2°C | |
| SEP 6 | 21.5°C | 20.3°C | |
| SEP 7 | 21.5°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 | 7°C |
| February | 2°C | 5°C | 8°C |
| March | 4°C | 8°C | 11°C |
| April | 6°C | 11°C | 15°C |
| May | 11°C | 16°C | 21°C |
| June | 13°C | 19°C | 24°C |
| July | 15°C | 23°C | 31°C |
| August | 19°C | 25°C | 30°C |
| September | 17°C | 22°C | 26°C |
| October | 12°C | 16°C | 20°C |
| November | 7°C | 11°C | 14°C |
| December | 4°C | 7°C | 9°C |
Lake Kapowsin: Water Temperature by Location
Lake Kapowsin: Weather Forecast
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Location & Local Information
Lake Kapowsin, a relatively shallow lake in Pierce County, Washington, tends to show the temperature patterns typical of lowland Pacific Northwest lakes. Surface temperatures in spring commonly run about 45–55°F (7–13°C) as the water recovers from winter cooling. In summer the lake can warm to roughly 60–72°F (15–22°C) at the surface, with the warmest days pushing the upper end of that range. By autumn surface temperatures usually fall back into the 50–60°F (10–16°C) band, and in winter the water often sits near freezing to about 34–40°F (1–4°C). Because Kapowsin is shallow in many areas, surface water responds quickly to air temperature and can warm faster in summer but also cool quickly overnight and in cloudy weather; deeper pockets remain cooler year-round.
Swimming at Lake Kapowsin is generally possible and people do use the lake for recreation, but it is subject to the usual caveats. There are typically no lifeguards, and water quality can vary: shallow, warm conditions in late summer can lead to aquatic vegetation and occasional blue‑green algae (cyanobacteria) blooms or bacterial advisories, which may make swimming unadvisable. Cold-water shock is a risk in spring and even summer mornings when temperatures are lower. For safety, check current local health or park advisories, heed posted signs at access points, and be prepared for sudden temperature changes and underwater hazards.