Lake Sawyer — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Sawyer, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Sawyer 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 14 | 19.5°C | 21.5°C | |
| SEP 15 | 19.4°C | 21.5°C | |
| SEP 16 | 19.6°C | 21.5°C | |
| SEP 17 | 18.7°C | 21.5°C | |
| SEP 18 | 19.3°C | 21.5°C | |
| SEP 19 | 19.3°C | 21.5°C | |
| SEP 20 | 19.2°C | 21.5°C | |
| SEP 21 | 19.0°C | 21.5°C | |
| SEP 22 | 21.5°C | 19.1°C | |
| SEP 23 | 21.5°C | 19.3°C | |
| SEP 24 | 21.5°C | 19.4°C | |
| SEP 25 | 21.5°C | 19.5°C | |
| SEP 26 | 21.5°C | 19.6°C | |
| SEP 27 | 21.5°C | 19.8°C | |
| SEP 28 | 21.5°C | 19.9°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 | 3°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 | 12°C | 17°C | 21°C |
| June | 12°C | 19°C | 24°C |
| July | 13°C | 22°C | 31°C |
| August | 17°C | 24°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 Sawyer: Water Temperature by Location
Lake Sawyer: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Lake Sawyer, a freshwater lake in King County, Washington, experiences typical Pacific Northwest seasonal temperature swings. Surface temperatures in winter generally range from about 34–42°F (1–6°C), making the water very cold for prolonged exposure. In spring the lake warms to roughly 45–60°F (7–16°C) as air temperatures rise and snowmelt influences inflows. Summers are when the surface is warmest, commonly reaching about 65–76°F (18–24°C) on sunny days, though deeper water stays considerably cooler. By fall the surface cools again to roughly 50–62°F (10–17°C) as nights lengthen and showers return.
Swimming is permitted at public access points such as Lake Sawyer County Park, which provides shoreline and beach areas for recreation. However, there are no lifeguards, so swimmers must exercise standard safety precautions and be aware that even in summer the water can feel chilly, especially beyond shallow areas. Local health advisories occasionally restrict swimming during algal or bacterial events, so checking current water-quality notices is advisable. Overall, Lake Sawyer offers legitimate swimming opportunities in warm months but requires attentiveness to temperature, depth, and posted guidance.