Lake Crescent — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Crescent, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Crescent today is 19.6°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 | 20.5°C | 24.0°C | |
| AUG 25 | 20.5°C | 24.0°C | |
| AUG 26 | 20.6°C | 24.0°C | |
| AUG 27 | 20.6°C | 24.0°C | |
| AUG 28 | 20.6°C | 24.0°C | |
| AUG 29 | 19.4°C | 24.0°C | |
| AUG 30 | 19.6°C | 24.0°C | |
| AUG 31 | 19.6°C | 24.0°C | |
| SEP 1 | 21.0°C | 19.7°C | |
| SEP 2 | 21.0°C | 19.7°C | |
| SEP 3 | 21.0°C | 19.8°C | |
| SEP 4 | 21.0°C | 19.9°C | |
| SEP 5 | 21.0°C | 20.0°C | |
| SEP 6 | 21.0°C | 20.0°C | |
| SEP 7 | 21.0°C | 20.1°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 | 0°C | 3°C | 7°C |
| February | 2°C | 5°C | 8°C |
| March | 4°C | 8°C | 11°C |
| April | 4°C | 10°C | 15°C |
| May | 10°C | 16°C | 21°C |
| June | 13°C | 19°C | 24°C |
| July | 14°C | 23°C | 31°C |
| August | 18°C | 24°C | 30°C |
| September | 16°C | 21°C | 26°C |
| October | 11°C | 16°C | 20°C |
| November | 6°C | 11°C | 14°C |
| December | 4°C | 7°C | 9°C |
Lake Crescent: Water Temperature by Location
Lake Crescent: Weather Forecast
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September 3
September 4
September 5
Location & Local Information
Lake Crescent is a deep, glacially carved lake in Olympic National Park known for exceptionally clear, cold water. Because of its depth and limited warm inflows, surface temperatures remain cool through the year. Typical seasonal ranges are roughly spring 42–52°F (6–11°C), summer 52–64°F (11–18°C), fall 45–55°F (7–13°C), and winter 40–45°F (4–7°C). Even in the warmest weeks of July and August the surface rarely approaches what many swimmers consider comfortably warm, and temperatures drop quickly with depth.
Swimming is permitted at the park’s shoreline access points and informal beaches, and visitors commonly enter the water at places such as Fairholme and Barnes Point. There are no lifeguards and some areas have steep drop-offs and chilly currents, so park guidance and personal caution are advised. Many people who choose to swim use short wetsuits or limit exposure time to reduce the risk of cold-water shock and hypothermia. Seasonal crowds and weather influence how comfortable swimming is; mid-summer offers the most favorable conditions, while spring, fall and winter are generally too cold for extended unprotected swimming despite being legally allowed.